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PR300 Power and Energy Meter Communication Interface

1. peg i 2 2 1 3 5 1 2 2 11 Command STX Station 01 0 WRD Register Comma Number Checksum ETX CR element number number or of words ST NO space n Response STX Station 01 OK dddd1 dddd2 ve ddddn Checksum ETX CR number element ST NO The response is returned in a 4 digit character string 0000 to FFFF in hexadecimal ddddn read data of the specified number of words ddddn character string in hexadecimal n 1 to 64 words Example Read the active energy register symbol kWh L and kWh H of the PR300 at station num ber 01 The register numbers for active energy are D0001 and D0002 Command STX O1010WRDD0001 0272 ETX CR The data of active energy 2 words will be returned in response to the command above Response STX O1010K7840017DO0B ETX CR 25000000 kWh in decimal See the Note below Note To use the response data as the reading reverse the order of the upper and lower words Hex 7840 017D reversed Hex 017D 7840 Decimal 25000000 IM 77C01E01 10E lt Toc gt lt Ind gt lt 4 PC Link Communication Protocol gt 4 8 WWR Writes data into D registers on a word by word basis Function This function code writes information into a sequence of contiguous registers on a word by word basis by the specified number of words starting with a specified register number e The number of words
2. There is no command data for data reading Number of bytes 1 2 1 2 0 2 1 1 Response STX DG 7 Station No data Checksum ETX CR element number ADR There is no response data Example Starts optional integration of PR300 with station number 01 indicates the checksum value Command STX DG701O00 ETXI CR Returns the following response for the above command Response STX DG70100 ETXI CR IM 77C01E01 10E lt Toc gt lt Ind gt 8 11 lt 8 PR201 Original Communication Protocol gt Parameter 8 Stops optional integration Function Stops optional integration Command response Number ofbytes 2c 2 2 1 1 Command STX DG 8 Station Checksum ETX CR element number ADR There is no command data for data reading Number ofbytes 1 2 1 2 0 2 1 1 Response STX DG 8 Station No data Checksum ETX CR element number ADR There is no response data Example Stops optional integration of PR300 with station number 01 indicates the checksum value Command STX DG80100 ETXI CR Returns the following response for the above command Response STX DG80100 ETXI CR Parameter 9 Initializes maximum and minimum values Function Ini
3. Response STX DG A Station ddddd ddddd 0 E O element number Active energy Previous value Current value Active power ADR of optional of optional electric energy electric energy Response data is returned as a 70 byte ASCII character string Continued 8 8 6 8 8 i E O i E O i E O i E O Voltage 1 Current 1 Power factor Maximum voltage 1 Minimum voltage 1 Continued 8 2 1 1 E O Checksum ETX CR Maximum current 1 IM 77C01E01 10E lt Toc gt lt Ind gt lt 8 PR201 Original Communication Protocol gt 8 13 e Example Reads in batch the measured values and maximum minimum value of PR300 with station number 01 Command STX DGA0100 ETX CR Returns the following response for the above command Response STX DGA01 100001000010000 1 000E 31 000E 31 000E 3G0 8001 000E 31 000E 21 000E 3CI0 ETX CR 1 BaD BD 4 5 6 7 8 9 10 1 Active energy 10000 kWh 2 Optional electric energy previous value 10000 Wh 3 Optional electric energy current value 10000 Wh 4 Active power 1 000E 3 W 1000 W 5 Voltage 1 1 000E 3 V 1000 V 6 Current 1 1 000E 3 A 1000 A 7 Power factor GO 800 8 Max
4. D Register Reference No H No Description Effective Range D0203 40203 OOCA CT ratio float lower 2 bytes 0 05 to 32000 D0204 40204 00CB CT ratio float upper 2 bytes Setup change status If other than 1 Invalid D0207 40207 00CE D0201 to D0206 are validated If 1 Writing is executed Initial value of CT ratio 1 4 byte floating point data 3F800000 Example To set the CT ratio to 10 0 For station number 01 use PC link communication without checksum and the random write command as shown below If 10 0 is converted into a 4 byte floating point value the value is 4120 0000 Command STX 01010WRW03D0203 0000 D0204 4120 D0207 0001 ETX CR Response STX 01010K ETX CR A NOTE e When changing the CT ratio the integrated values of active energy reactive energy apparent energy optional active energy and regenerative energy will return to 0 The values of the demand alarm point and the scaling of analog output will also be initialized e Setthe VT and CT ratios so that secondary rated power x VT ratio x CT ratio is smaller than 10 GW When this value is 10 GW or greater writing to D registers will be invalid no error is output IM 77C01E01 10E lt Toc gt lt Ind gt lt 3 Procedures for Setting PR300 Functions gt 3 4 3 1 3 Setting of Integrated Low cut Power Procedure 1 Write an integrated low cut power value to the two D registers in the table b
5. Command STX DGM0100 ETXI CR Returns the following response for the above command Response STX DGMO0110000E 31000010000 1 000E 31 000E 31 000E 31 000E 3 1 2 3 4 5 6 7 1 000E 31 000E 31 000E 3G0 8001 000E 31 000E 21 000E 3 8 9 10 11 12 13 14 1 000E 31 000E 31 000E 21 000E 21 000E 31 000E 3NIL ETX CR 15 6 17 18 19 20 1 Active energy 10000E 3 Wh 10 MWh 2 Optional electric energy previ ous value 10000 Wh 3 Optional electric energy current value 10000 Wh 4 Active power 1 000E 3 W 1000 W 5 Voltage 1 1 000E 3 V 1000 V 6 Voltage 2 1 000E 3 V 1000 V 7 Voltage 3 1 000E 3 V 1000 V 8 Current 1 1 000E 3 A 1000 A 9 Current 2 1 000E 3 A 1000 A 10 Current 3 1 000E 3 A 1000 A 11 Power factor GO 800 12 Maximum voltage 1 1 000E 3 V 1000 V 13 Minimum voltage 1 1 000E 2 V 100 V 14 Maximum current 1 1 000E 3 A 1000 A 15 Maximum voltage 2 1 000E 3 V 1000 V 16 Maximum voltage 3 1 000E 3 V 1000 V 17 Minimum voltage 2 1 000E 2 V 100 V 18 Minimum voltage 3 1 000E 2 V 100 V 19 Maximum current 2 1 000E 3 A 1000 A 20 Maximum current 3 1 000E 3 A 1000 A Parameter X Reads model and suffix codes e Function Returns the model and suffix codes of PR300 e Command response Number of bytes 1 2 1 2 2 1 1 Command STX DG
6. Maximum Segment Length 100 m 1 Maximum Connecting Configuration Cascade max 4 levels for 10BASE T max 2 levels for 1OOBASE TX 2 Communication System TCP IP Data Format Binary Maximum Number of Connections 1 1 Distance between the hub and module 2 The number of hubs connectable in cascade configuration IM 77C01E01 10E lt Toc gt lt Ind gt lt 2 Setup gt 2 1 2 Setup This chapter describes how to set up the PR300 which is equipped with RS 485 communication as a standard feature When using an Ethernet equipped model either RS 485 or Ethernet can be selected by parameter setting for communications For details of use of RS 485 communication see subsection 2 1 1 Procedure for RS 485 Communication For details of use of the Ethernet communication see subsection 2 1 2 Procedure for Ethernet Communication For details of use of the Ethernet serial gateway function see subsection 2 1 3 Procedure for Ethernet Serial Gateway Function 2 1 Setup Procedure Set up the communication functions on the PR300 as follows A WARNING To avoid an electric shock be sure to turn off the power supply source to the equipment involved before you start wiring Note Create communication programs referring to the user s manual for communications of each higher level device Higher level devices PCs PLCs sequencers and others IM 77C01E01
7. IM 77C01E01 10E lt Toc gt lt Ind gt lt 3 Procedures for Setting PR300 Functions gt 3 23 3 5 8 Subnet Mask for Ethernet communication Procedure 1 To set the subnet mask write data to the four D registers in the table below The data type is integer 2 After writing that value write 1 to the Ethernet writing status register D0294 D Register Reference No H No Description Effective Range D0285 40285 011C Subnet mask 1 SM 1 0 to 255 D0286 40286 011D Subnet mask 2 SM 2 0 to 255 D0287 40287 011E Subnet mask 3 SM 3 0 to 255 D0288 40288 011F Subnet mask 4 SM 4 0 to 255 Ethernet writing status F i D0294 40294 0125 D0281 to D0293 are j E E validated Initial value of subnet mask 255 255 255 0 0 to 255 0 to 255 0 to 255 0 to 255 Subnet Mask SM 1 SM 2 SM 3 SM 4 A NOTE e A subnet mask value can be set for the PR300 with Ethernet communication function e Subnet mask settings are only effective when the protocol is set to Modbus TCP Example To set the subnet mask to 255 255 255 0 For station number 01 use PC link communication without checksum and the random write command as shown below Command STX O1010WRW05D0285 00FF D0286 00FF D0287 00FF D0288 0000 D0294 0001 ETX CR Response STX O101OK ETX CR IM 77C01E01 10E lt Toc gt lt Ind gt lt 3 Procedures for Setting PR300 Functions gt 3 24 3
8. Element MBAP Header PDU Number of bytes 2 2 2 1 1 2 2 Command Transaction ID Protocol Ip Number of Yni ip Function Register Write data element bytes code start number Hex value Arbitrary 0000 0006 01 t0 99 06 Response for normal operation Element MBAP Header PDU Number of bytes 2 2 2 1 1 2 2 Command Transaction ID Protocol ID Number of Unit ID Function Register Write data element bytes code start number Hex value Arbitrary 0000 0006 01 to 99 06 Example Write 5 500Wh pls into the D0209 pulse unit at station number 01 Request 000100000006010600D00005 oO E EENET 1 2 3 4 5 6 7 1 0001 Arbitrary 2 byte data 2 0000 Protocol ID 0000 fixed 3 0006 Number of bytes 4 01 Unit ID 01 indicating PR300 5 06 Function code 06 6 OODO D register number 209 7 0005 Write data The following response will be returned to the request above Response 000100000006010600D00005 0 BD B 4 7 1 0001 Arbitrary 2 byte data in the request 2 0000 Protocol ID 0000 fixed 3 0006 Number of bytes 4 01 Unit ID 01 indicating PR300 5 06 Function code 06 6 00D0 D register number 209 7 0005 Write data zZ umbers in quotation marks are hexadecimal IM 77C01E01 10E lt Toc gt lt Ind gt lt 6 Modbus TCP Communication Protoc
9. IM 77C01E01 10E lt Toc gt lt Ind gt lt 3 Procedures for Setting PR300 Functions gt 3 35 3 8 Setting Control States 3 8 1 Integration Start Stop Procedure 1 To execute integration start stop write data to the D register in the table below The data type is integer D Register Reference No H No Description Effective Range Integration start stop Relevant items are as follows D0301 40301 012C Active energy D0001 D0002 0 Stop Regenerative energy D0003 D0004 1 Start LEAD reactive energy D0005 D0006 LAG reactive energy D0007 D0008 Apparent energy D0009 D0010 Initial value of integration start stop 1 start Example To execute integration start stop For station number 01 use PC link communication without checksum and the random write command as shown below lt For start gt Command STX 01010WRW01D0301 0001 ETX CR Response STX 01010K ETX CR lt For stop gt Command STX 01010WRW01D0301 0000 ETX CR Response STX 01010K ETX CR IM 77C01E01 10E lt Toc gt lt Ind gt lt 3 Procedures for Setting PR300 Functions gt 3 8 2 Optional Integration Start Stop Procedure 1 To execute optional integration start stop write data to the D register in the table below The data type is integer D Register Reference No D0302 40302 H No 012D Optional integration start stop Relev
10. Ref No H No Description Effective Range If other than 1 Invalid D0400 40400 018F Remote reset If 1 PR300 is reset A NOTE e When remote reset is executed maximum minimum and instantaneous voltage values and maximum and instantaneous current values will be reset Optional integra tion is terminated if it is being performed e Even when remote reset is executed active energy reactive energy and apparent energy data as well as set parameter values are retained IM 77C01E01 10E lt Toc gt lt Ind gt lt 5 Modbus RTU and ASCII Communication Protocols gt 5 2 Message and Response Function codes are command words used by the higher level device to obtain the D registers information of PR300 Table 5 3 Function Codes Code Function 03 Reads data from multiple D registers Description Capable of reading data from a maximum of 64 successive D registers between D0001 and D0400 06 Writes data into D register Capable of writing data into one D register between D0001 and D0400 08 Performs loop back test Used when checking communication wiring 16 Writes data into multiple D registers Capable of writing data into a maximum of 32 successive registers between D0001 and D0400 The write function codes cannot be written into read only or user prohibited D regis ters Broadcast addressing is possible with function codes 06 and 16 only Also in th
11. The Modbus TCP frame structure is as follows MODBUS TCP IP ADU MBAP Header Function code Data 4 gt PDU MBAP Header Modbus Application Protocol Header Header used to identify the Modbus TCP protocol PDU simple Protocol Data Unit 6 3 1 MBAP Header Structure The MBAP Header Modbus Application Protocol Header consists of the following seven bytes Byte No 0 1 2 3 4 5 6 Description Transaction ID Protocol ID Number of bytes Unit ID Transaction ID Set any value for identifying the transaction The PR300 returns a value received from a higher level device as a response Protocol ID Specify 0 for the Modbus TCP protocol Number of bytes Number of bytes after the unit ID byte number 6 Unit ID For the communication with the PR300 itself specify 01 for the higher level device The PR300 returns 01 as a response For the communication with the device connected to the RS 485 communication terminals of the PR300 using the Ethernet serial gateway function specify its station number 02 to 99 The device returns the same value as a response 6 3 2 PDU Structure The PDU simple Protocol Data Unit consists of the following n bytes Byte No 0 1 to n 1 Description Function code Data Function code Specify a command function code from a higher level device Data Specify D register numbers number of D register
12. When a response is returned If an inconsistency is found in a request s PDU the PR300 ignores the request and returns the following response Element MBAP Header PDU Number of bytes 2 2 2 1 1 1 Command Transaction ID Protocol ID Numberor Unit ID Function Error element bytes code code Hex value Arbitrary 0000 03 01 to 99 The function code entered here is the request s function code in hex plus 80 in hex Response Error Codes Error Code Meaning Cause 01 Funcation code error Function code does not exist 02 Abnormal D register number D register number out of the range is specified 03 Abnormal number of D registers Number of D registers out of the range is specified When a response is not returned In the following cases the PR300 ignores the request and does not return a response e When no connection is established at the TCP IP socket interface e When an inconsistency is found in a requests MBAP header e When the communication with the serial communication device specified in Unit ID is unusual Note As a measure against the abovementioned problems add a time out process to the communication function or program of the higher level device IM 77C01E01 10E lt Toc gt lt Ind gt lt 6 Modbus TCP Communication Protocol gt 6 1 2 6 5 Sample Program 6 5 1 Example of BASIC Program for Send and Receive This section shows an example of acommand send
13. 3 0006 Number of bytes 4 01 Unit ID 01 indicating PR300 5 08 Function code 08 6 1234 Transmit data umbers in quotation marks are hexadecimal Zz IM 77C01E01 10E lt Toc gt lt Ind gt lt 6 Modbus TCP Communication Protocol gt 6 9 16 Writes data into multiple D registers Function This function code writes data into successive D registers by the number starting with a specified D registers number e The maximum number of D registers to be written into at a time is 32 e For the format of response in the event of failure see subsection 6 4 4 e Broadcast addressing is possible by setting 00 to the station number No response is returned when using the broadcast addressing Request for nomal operation Writing data to n registers Element MBAP Header PDU Number of bytes 2 2 2 1 1 2 2 Command Number of Function Register Number of element Haneartoni2 Traine bytes gu code start number registers Hex value Arbitrary 0000 2n 7 01to99 10 n Request continued PDU 1 2 2 Byte Data 1 ccoo Data n count 2n Response for normal operation Element MBAP Header PDU Number of bytes 2 2 2 1 1 2 2 Command Transaction ID Protocol ID Number of Unit ID Function Register Number of element bytes code startnumber registers Hex value Arbitrary 0000 0006 01 to 99 10 n IM 77C01E01
14. 91 80 4158 6000 Fax 91 80 2852 0625 YOKOGAWA CHINA CO LTD Tangyue Pavilion Xi an software park No 72 Keji 2nd Road Xi an High tech Industries Development Zone Xi an 710075 CHINA Phone 86 29 87669988 Fax 86 29 87607800 May 08
15. Not available in PR300 A or 4800 to 4800 5 bytes G Integration reset No data retained data is also reset 0 byte 2 The following shows a response to a setting value read command VT ratio CT ratio and integrated low cut power 16 bytes IM 77C01E01 10E lt Toc gt lt Ind gt lt 8 PR201 Original Communication Protocol gt 8 5 8 5 Command Details E Command DG Parameter 0 Reads measured values in batch e Function This command reads the active energy optional electric energy previous and current values active power voltage 1 current 1 and the power factor e Command response Number of bytes 1 2 1 2 2 1 1 Command STX DG 0 Station Checksum ETX CR element number ADR There is no command data for data reading Number of bytes 1 2 1 2 5 5 5 9 Response STX DG 0 Station ddddd ddddd f E O element number Active energy Previous Current Active power ADR optional optional electric electric energy value energy value Response data is returned as a 46 byte ASCII character string Continued 8 8 6 2 1 fi i E O E O Checksum ETX CR Voltage 1 Current 1 Power factor e Example The PR300 measured values of sta
16. Number of Bytes Element 1 STX 2 Station number ST NO 2 CPU number 01 2 OK Variable length Parameter data Checksum ETX CR 2 In the Event of Failure If communication does not complete normally the PR300 returns a character string ER and error code EC1 and EC2 See subsection 4 1 3 Response Error Codes e No response is made in case of an error in station number specification or CPU number specification e f a PR300 cannot receive ETX in a command response may not be made Note As a countermeasure provide a timeout process in the communication functions of the higher level device or in communication programs Number 1 2 2 2 2 2 3 2 1 1 of Bytes Element STX Station number ST NO CPU number 01 ER EC1 EC2 Command Checksum ETX CR IM 77C01E01 10E lt Toc gt lt Ind gt lt 4 PC Link Communication Protocol gt 4 4 4 1 3 Response Error Codes See Also 4 1 2 Configuration of Response for the configuration of response in the event of error The error codes EC1 and detailed error codes EC2 of responses are as follows Table 4 1 List of Error Codes EC1 aon Meaning Cause s Command error e No command exists e Command not executable Register specification error e No register number exists Out of setpoint range e A value other than hexadecimal values 0 to 9 A to
17. User s e ERT Manual Model PR300 ERTER Power and Energy Meter Communication Interface RS 485 and Ethernet Communications IM 77C01E01 10E vigilantplant Yokogawa Electric Corporation 4th Edition lt Toc gt lt Ind gt lt Rev gt Introduction This user s manual describes the communication functions of the PR300 power and energy meter and contains information on how to create communication programs Hereafter the PR300 power and energy meter is simply referred to as the PR300 Read the manual carefully to understand the communication functions of the PR300 The PR300 has the following communication protocols PC link communication protocol Modbus RTU and Modbus ASCIl communication protocols Modbus TCP communication protocol for the PR300 with Ethernet communication function PR201 original communication protocol You are required to have background knowledge of the communication specifications of higher level devices their communication hardware language used for creating communi cation programs and so on E Intended Readers This manual is intended for people familiar with the functions of the PR300 control engi neers and personnel in charge of maintaining instrumentation and control equipment E Related Documents The following user s manuals all relate to the communication functions of the PR300 Read them as necessary Model PR300 Power and Energy Meter User s Manual electronic ma
18. e For the format of response in the event of failure see subsection 5 1 4 e Broadcast addressing is possible by setting 00 to the station number No response is returned when using the broadcast addressing Message for normal operation Element Start of Station Function Code D Register Start D Register Start Message Number 10 Number Number Mark ST NO Upper Digit Lower Digit Number of bytes in RTU mode None f 1 1 Number of bytes in ASCII mode 1 2 2 2 2 Massage continued Number of Number of Byte Data Data Error End of Message D Registers D Registers Count Upper Digit Lower Digit ee Check Mark Upper Digit Lower Digit CR LF 1 1 1 1 1 2 None 2 2 2 2 2 2 2 Response for normal operation Element Start of Station Function D Register D Register Message Number Code Start Number Start Number Mark ST NO 10 Upper Digit Lower Digit Number of bytes in RTU mode None 1 i i Number of bytes in ASCII mode 1 2 2 2 2 Response continued Number of Number of Error End of Message D Registers D Registers Check Mark Upper Digit Lower Digit CR LF 1 1 2 None 2 2 2 2 IM 77C01E01 10E lt Toc gt lt Ind gt lt 5 Modbus RTU and ASCII Communication Protocols gt 5 15 Example ASCII mode Write 10 into a series of four D regis
19. lower limit of scaling is 50 or greater If it is smaller than 50 writing to the D register will be invalid IM 77C01E01 10E lt Toc gt lt Ind gt lt 3 Procedures for Setting PR300 Functions gt 3 10 3 4 Demand Setting 3 4 1 Demand Power Current Procedure 1 Write a demand power current value to the D register in the table below The data type is integer 2 After writing that value write 1 to the demand measurement writing status register D0226 D Register Reference No H No Description Effective Range D0218 40218 00D9 Demand power current Oe Active power 1 Current Demand measurement writing If other than 1 Invalid D0226 40226 00E1 status D0218 to D0225 are If 1 Writing is executed validated Initial value of demand power current 0 active power Example To set the demand power current to 1 current For station number 01 use PC link communication without checksum and the random write command as shown below Command STX 01010WRW02D0218 0001 D0226 0001 ETX CR Response STX 01010K ETX CR A NOTE e A demand power current value can be set for the PR300 with demand measuring function e When the PR300 is the three phase four wire system 2 5 element 1 Current can be measured only when the current is in a state of equilibrium IM 77C01E01 10E lt Toc gt lt Ind gt lt 3 Procedures for Setting PR300 Functions gt 3 11 3 4 2 Demand
20. 1 Active energy 10000E 3 Wh 10 MWh 2 Optional electric energy previ ous value 10000 Wh 3 Optional electric energy current value 10000 Wh 4 Active power 1 000E 3 W 1000 W 5 Voltage 1 1 000E 3 V 1000 V 6 Voltage 2 1 000E 3 V 1000 V 7 Voltage 3 1 000E 3 V 1000 V 8 Current 1 1 000E 3 A 1000 A 9 Current 2 1 000E 3 A 1000 A 10 Current 3 1 000E 3 A 1000 A 11 Power factor GO 800 IM 77C01E01 10E lt Toc gt lt Ind gt lt 8 PR201 Original Communication Protocol gt Parameter G Reads electric energy e Function Reads the active energy e Command response Number of bytes 1 2 2 Command STX DG G Station Checksum element number ADR There is no command data for data reading Number of bytes Response STX DG G Station element number ADR E O Checksum ETX CR 8 16 Response data is returned as an 8 byte ASCII character string 00000E 0 to 99999E 6 e Example Reads the active energy of PR300 with station number 01 value Command STX DGG01O0 ETX CR indicates the checksum Returns a response of the active energy 10 MWh 10000E 3 Wh for the above command Response STX DGG0110000E 300 ETX CR A NOTE Display ranges of active energy vary depending on the va
21. 9 Overranged voltage V 2 10 __Overranged voltage V 3 11 Under ranged voltage V 1 12 Under ranged voltage V 2 13 __Under ranged voltage V 3 14 __Overranged power factor 15 Overranged frequency IM 77C01E01 10E lt Toc gt lt Ind gt lt 8 PR201 Original Communication Protocol gt 8 1 8 8 1 8 2 Overview PR201 Original Communication Protocol This function enables various measured values to be read into a personal computer through the use of a command response method There are two ways for reading the values One is used to read values individually and another to read them in batch mode where only measurement items in the specified mode can be read Communication Specifications Transmission distance PR300 Approximately 1 2 km maximum Use of 24 AWG twisted pair cable Connection method Multi drop connection of up to 32 stations including a high level personal computer Station number 1 to 99 Transmission method Half duplex transmission Synchronization Start stop synchronization Baud rate 19200 9600 2400 bps Data format Start bit one bit Data bit 8 bits Parity None Stop bit 1 bit Xon Xoff control Unavailable Communication error handling If an invalid command is received it is discarded and no response is returned Because noise or invalid commands are ignored the higher level PC must perform time
22. CR Response STX 0101OK ETX CR lt For stop gt Command STX O1010WRW01D0311 O0000 ETX CR Response STX O101OK ETX CR A NOTE Demand measurement start stop can be performed for the PR300 with demand measuring function IM 77C01E01 10E lt Toc gt lt Ind gt lt 3 Procedures for Setting PR300 Functions gt 3 38 3 8 4 Confirmation and Release of Demand Alarm State Procedure 1 To execute confirmation and release of demand alarm state write data to the D register in the table below The data type is integer D Register Reference No Description Effective Range g 0 Normal state Confirmation and release 1 Alarm state of demand alarm state Writing 0 during alarm state clears the alarm D0312 40312 0137 Example To execute confirmation of demand alarm state For station number 01 use PC link communication without checksum and the word basis read write command as shown below lt For read gt Command STX 01010WRDD0312 01 ETX CR Response STX 01010K0001 ETX CR lt For write gt Command STX 01010WWRD0312 01 0000 ETX CR Response STX 0101OK ETX CR A NOTE Confirmation and release of demand alarm state can be set for the PR300 with demand measuring function IM 77C01E01 10E lt Toc gt lt Ind gt lt 4 PC Link Communication Protocol gt 4 1 4 PC Link Communication Protocol 4 1 Overview The use of PC link communication enables the PR30
23. OB station number 11 03 function code 03 00C8 D register start number 201 0004 number of D registers 4 and 26 error check Numbers in quotation marks are hexadecimal The following response will be returned to the message above Response 0B030800003F8000003F806C CRI LF The VT ratio and CT ratio data are floating point values The combined value of D0201 and D0202 00003F80 represents 1 That of D0203 and D0204 which is also 00003F80 represents 1 as well the upper four digits 3F80 and the lower four digits 0000 are reversed The floating point value of 3F800000 is the decimal equivalent of 1 IM 77C01E01 10E lt Toc gt lt Ind gt 06 Function lt 5 Modbus RTU and ASCII Communication Protocols gt Writes data into D register This function code writes data into a specified D registers number e The maximum number of D registers to be written into at a time is 1 5 12 e For the format of response in the event of failure see subsection 5 1 4 e Broadcast addressing is possible by setting 00 to the station number Message for normal operation Element Start of Station Function Code D Register D Register Message Number 06 Number Number Mark ST NO Upper Digit Lower Digit Number of bytes in RTU mode None 1 1 i Number of bytes in ASCII mode 2 2 2 2 Mes
24. R D0030 40030 001D V2H Voltage 2 float upper 2 bytes D0031 40031 001E V3L Voltage 3 float lower 2 bytes 0 0 to 9 999 999 9 V R D0032 40032 001F V3H Voltage 3 float upper 2 bytes D0033 40033 0020 A1L Current 1 float lower 2 bytes 0 000 to 999 999 990 A R D0034 40034 0021 A1H Current 1 float upper 2 bytes Current 2 float lower 2 bytes 0 000 to 999 999 990 A R Current 2 float upper 2 bytes D0037 Current 3 float lower 2 bytes 0 000 to 999 999 990 A R D0038 Current 3 float upper 2 bytes D0039 40039 0026 PFL Power factor float lower 2 bytes 0 500 to 1 000 to 0 500 R D0040 40040 0027 PFH Power factor float upper 2 bytes D0041 40041 0028 FreqL Frequency float lower 2 bytes 45 0 to 65 0 Hz R D0042 40042 0029 FreqH Frequency float upper 2 bytes D0043 40043 002A DEMANDWL Demand power float lower 2 bytes 0 0 to 9 999 999 9 W R D0044 40044 002B DEMAND W H Demand power float upper 2 bytes D0045 40045 002C DEMAND A1 L Demand current 1 float lower 2 bytes 0 000 to 999 999 990 A R D0046 40046 002D DEMAND A1 H Demand current 1 float upper 2 bytes D0047 40047 002E DEMAND A2 L Demand current 2 float lower 2 bytes 0 000 to 999 999 990 A R D0048 40048 002F DEMAND A2 H Demand current 2 float upper 2 bytes D0049 40049 0030 DEMAND A3 L Demand current 3 float lower 2 bytes 0 000 to 999
25. TIP Gives additional information to complement the present topic See Also Gives reference locations for further information on the topic E Description of Displays 1 Some of the representations of product displays shown in this manual may be exag gerated simplified or partially omitted for reasons of convenience when explaining them 2 Figures and illustrations representing the PR300 s displays may differ from the real displays in regard to the position and or indicated characters upper case or lower case for example the extent of difference does not impair a correct understanding of the functions and the proper operations and monitoring of the system IM 77C01E01 10E lt Toc gt lt Ind gt lt Rev gt Notices E Regarding This User s Manual 1 2 3 This manual should be passed on to the end user Keep the manual in a safe place Read this manual carefully to gain a thorough understanding of how to operate this product before you start using it This manual is intended to describe the functions of this product Yokogawa Electric Corporation hereinafter simply referred to as Yokogawa does not guarantee that these functions are suited to the particular purpose of the user Under absolutely no circumstance may the contents of this manual in part or in whole be transcribed or copied without permission The contents of this manual are subject to change without prior notice Every effort has been
26. lt Ind gt lt 4 PC Link Communication Protocol gt 4 6 4 2 Command and Response The following shows the lists of commands available in PC link communication The details of them are explained in the description of each command 1 Word basis Access Commands Command Description Number of words to be handled Word basis read 1 to 64 words Word basis write 1 to 64 words Word basis random read 1 to 32 words Word basis random write 1 to 32 words Specifies D registers to be monitored on a WRS word by word basis 1 to 32 words WRM Word basis monitoring 2 Information Commands Command Description Number of units to be handled INF6 Reads model suffix codes and version 1 INF7 Reads the maximum value of CPU 1 IM 77C01E01 10E lt Toc gt lt Ind gt lt 4 PC Link Communication Protocol gt 4 7 WRD Reads D registers on a word by word basis Function This function code reads a sequence of contiguous register information on a word by word basis by the specified number of words starting with a specified register number e The number of words to be read at a time is 1 to 64 e For the format of response in the event of failure see subsection 4 1 2 e The command shown below includes the checksum function When performing communication without the checksum do not include the 2 byte checksum element in the command Command Response for normal operation
27. re isinin aaa aaa aa aaea aaa a aaa alaaa 2 1 2 1 1 Procedure for RS 485 Communication ccccceceeeeeeeeeeeeeeeeeeees 2 2 2 1 2 Procedure for Ethernet Communication 0 cccccceeseeeeteeeteeeeees 2 3 2 1 3 Procedure for Ethernet Serial Gateway Function cseeeeeees 2 4 2 2 Setting Communication Conditions ccsteseeeeeeeeeseeeeeeeeeseeeesneeeneeeeneeeeees 2 6 2 2 1 Conditions for RS 485 Communication cccccceeceeeeeeeeeeeeeeeees 2 6 2 2 2 Conditions for Ethernet Communication ccccceceeeeeeeeeeeeeeeeees 2 8 2 2 3 Conditions for Ethernet Serial Gateway Function ceceeeee 2 10 2 3 Wiring for COMMUNICATION ccceecceeeeeeeeeeeeeeeee sees eneeeenseeeseeesesnaeenseeeeneneess 2 12 2 3 1 Wiring for RS 485 Communication ccccccceeeeeeeeteseneeteneeeeneeee 2 12 2 3 2 Wiring for Ethernet Communication ccccecceeeeeeseeeeeeeeeeeseeees 2 13 2 3 3 Wiring for RS 485 Communication for Ethernet Serial Gateway Function 2 14 3 Procedures for Setting PR300 Functions 3 1 Basie Sellin O co asa ccs ee aac aaaea ae anaa eae ance a eaa aana AE a eaaa aa E 3 2 3 1 1 Setting Of VT Ratio oriire ariei sanninna eaa iaaa a N dees 3 2 3 1 2 Setting Of CT Ratio ceccececeeeceeeeeeneeceeeeeceaeeseeeeseaeeseeeeseaeeseneeeeaees 3 3 3 1 3 Setting of Integrated Low cut POWER c cceeceeeeeeseeeeseeeeeeeeeteeeeaees 3 4 3 2 Setting Pulse Output ccccseess
28. upper 2 bytes D0373 40373 0174 Active energy value writing If other than 1 Invalid status If 1 Writing is executed Example To set the active energy value to 10 000 000 kWh For station number 01 use PC link communication without checksum and the random write command as shown below If 10 000 000 is converted into a hexadecimal value the value is 0098 9680 Then the order of the upper two bytes and the lower two bytes is reversed 9680 0098 Command STX 01010WRW03D0371 9680 D0372 0098 D0373 0001 ETX CR Response STX 0101OK ETX CR A NOTE The set active energy value range of the PR300 changes depending on the values of the VT and CT ratios The table below shows the set value range Secondary Rated Power x VT Ratio x CT Ratio Possible Set Value Range Less than 100 kW 0 to 99999 kWh 100 kW to less than 1 MW 0 to 999999 kWh 1 MW to less than 10 MW 0 to 9999999 kWh 10 MW or greater 0 to 99999999 kWh A NOTE The secondary rated power of the PR300 changes depending on its model and suffix codes IM 77C01E01 10E lt Toc gt lt Ind gt lt 3 Procedures for Setting PR300 Functions gt 3 6 2 Regenerative Energy Procedure 1 type is integer 3 27 Write a regenerative energy value to the two D registers in the table below The data 2 After writing that value write 1 to the writing status register D0376 D Register Refere
29. 0 6 Mars 33 eee o ie 66 102 a w 7 ona 30 ee alo ec oe 08 8 AHBS 28 40 B 72 E cs 104 o o MMA 20 41 49 73 I 6 105 fe 0A 10 Pe oA on ase ck 100 0B 11 AKVET 2B 43 Pia 7 Pe ce o ie oc 12 DREN 2c 44 zc 76 6c o oo 3 Bea 4 AM 2 7 Pe oc o ie oc 414 A 22 46 42 o ce o ie oF 15 Cem oF 47 w o Eeo 1 mo 16 30 49 50 o e 70 ee n 17 Come 31 49 1 1 8 men uw ie 12 13 Pee 32 so ie 3 9 fe 72 4 ie 3p 0 Bes 3 Zs 3 Ha us 14 20 Aa sn sa ces eos is 21 Pm s z 5 55 s fe 75 117 fe ie 22 ee 300 5a so co e ne ts m 23 Peel 3755 7 57 37 M a 119 fe 18 24 Pogo 38 56 8 58 88 ee 78 120 fe m 25 eee 30 0 57 em so co 70s to iA s A 3A 58 A 90 7A 1k B 27 Bese 3B 59 ss ol B 123 Fe 28 FS Bo ao EM sc oo MM 7c cM iD 29 Pee 3p a E 5D 93 1 m 125 ia E 30 ee se o E ck oe cc i iF 31 Qe or 4663 GF 95 7 127 Woee IM 77C01E01 10E lt Int gt lt Toc gt lt Ind gt l Revision Information Title Model PR300 Power and Energy Meter Communication Interface Users Manual RS 485 and Ethernet Communications Manual No IM77C01E01 10E Apr 2006 1st Edition Newly published Aug 2006 2nd Edition The PR201 original communication protocol is added Feb 2007 3rd Edition The note of the RS 232C RS 485 converter is added June 2008 4th Edition Error correction Written by Yokogawa Electric Corporation Published by Yokogawa Electric Corporation 2 9 32 Nakacho Musashino shi Tokyo 180 8750 JAPAN IM77C01E01
30. 2 12 2 3 Wiring for Communication Connect a higher level device with the PR300 for using the communication func tions The wiring procedures and precautionary notes are as follows 2 3 1 Wiring for RS 485 Communication For a common PC the RS 485 interface is not directly connectable Use a ML2 RS232C RS485 converter for wiring A warnine To avoid an electric shock be sure to turn off the power supply source to the equipment involved before you start wiring Use crimp on terminals at cable ends Before you start wiring read the user s manual of each device PR300 PR300 with RS 485 with RS 485 communication function communication function RS232C RS485 converter Terminator built in Terminator 1200 1 4W PC 120Q 1 4W Wthen terminating on wiring short circuit terminals Dand RS 232C straight cable Communication cable Communication cable JIS Class D 3 grounding JIS Class D 3 grounding grounding resistance grounding resistance of 100Q or less of 100 or less Note Use UL Listed RS 232C RS 485 converter if the converter has AC DC power supply input this is optional for converters supplied by a Limited Power Source with input voltages less than 30 V AC or 60 V DC and which are separated from mains by double or reinforced insulation Communication cable Shielded twisted pair cable AWG24 eqivalent size Recommended terminals See the PR300 Power and Energy Meter User s
31. 3 Demand Measurement Start Stop Procedure 1 To execute demand measurement start stop write data to the D register in the table below The data type is integer D Register Reference No H No Description Effective Range Demand measurement start stop 0 Measurement sto D0311 40311 0136 Relevant items are as follows 1 Measurement td Demand power D0043 D0044 Demand current D0045 to D0050 Initial value of demand measurement start stop 0 measurement stop A NOTE Demand measurement start stop can also be controlled by operation key Once the opera tion key is used it is the only means for such control Control via communication is not possible until the power is turned off or remote reset is executed see subsection 3 7 1 Control via communication START command Perform integration for this duration STOP command A C N Y l Time Turned on by operation key Turned off by operation key Data update i ee No response to requests by operation key Control by operation key Turned on by operation key Perform integration for this duration Turned off by operation key C A 4 j Time START STOP Data update command command ee No response to requests via communication Example To execute demand measurement start stop For station number 01 use PC link communication without checksum and the random write command as shown below lt For start gt Command STX O1010WRW01D0311 0001 ETX
32. 5 9 Default Gateway for Ethernet communication Procedure 1 To set the default gateway write data to the four D registers in the table below The data type is integer 2 After writing that value write 1 to the Ethernet writing status register D0294 D Register Reference No H No Description Effective Range D0289 40289 0120 Default gateway 1 DG 1 0 to 255 D0290 40290 0121 Default gateway 2 DG 2 0 to 255 D0291 40291 0122 Default gateway 3 DG 3 0 to 255 D0292 40292 0123 Default gateway 4 DG 4 0 to 255 Ethernet writing status If other than 1 Invalid D0294 40294 0125 D0281 to D0293 are If 1 Writing is executed validated Initial value of default gateway 0 0 0 0 0 to 255 0 to 255 0 to 255 0 to 255 Default Gateway DG 1 DG 2 DG 3 DG 4 A NOTE e A default gateway value can be set for the PR300 with Ethernet communication function e Default gateway settings are only effective when the protocol is set to Modbus TCP Example To set the default gateway to 0 0 0 0 For station number 01 use PC link communication without checksum and the random write command as shown below Command STX O1010WRW05D0289 0000 D0290 0000 D0291 0000 D0292 0000 D0294 0001 ETX CR Response STX 0101OK ETX CR IM 77C01E01 10E lt Toc gt lt Ind gt lt 3 Procedures for Setting PR300 Functions gt 3 25 3 5 10 Port Number for Ethernet communication Proce
33. Command STX 01010WRW02D0276 0002 D0277 0001 ETX CR Response STX O101OK ETX CR IM 77C01E01 10E lt Toc gt lt Ind gt lt 3 Procedures for Setting PR300 Functions gt 3 22 3 5 7 IP Address for Ethernet communication Procedure 1 To set the IP address write data to the four D registers in the table below The data type is integer 2 After writing that value write 1 to the Ethernet writing status register D0294 D Register Reference No H No Description Effective Range D0281 40281 0118 IP address 1 IP 1 0 to 255 D0282 40282 0119 IP address 2 IP 2 0 to 255 D0283 40283 O11A IP address 3 IP 3 0 to 255 D0284 40284 011B IP address 4 IP 4 0 to 255 Ethernet writing status D0294 40294 0125 D0281 to D0293 are validated If other than 1 Invalid If 1 Writing is executed Initial value of IP address 192 168 1 1 0 to 255 0 to 255 0 to 255 0 to 255 IP address IP 1 e IP 2 i IP 3 R IP 4 A NOTE e An IP address value can be set for the PR300 with Ethernet communication function e P address settings are only effective when the protocol is set to Modbus TCP Example To set the IP address to 192 168 1 3 For station number 01 use PC link communication without checksum and the random write command as shown below Command STX 01010WRW05D0281 00C0 D0282 00A8 D0283 0001 D0284 0003 D0294 0001 ETX CR Response STX 0O101OK ETX CR
34. D0006 LAG reactive energy D0007 D0008 Apparent energy D0009 D0010 Example To execute energy value all reset For station number 01 use PC link communication without checksum and the random write command as shown below Command STX 01010WRW01D0352 0001 ETX CR Response STX 0101OK ETX CR IM 77C01E01 10E lt Toc gt lt Ind gt lt 3 Procedures for Setting PR300 Functions gt 3 33 3 7 4 Active Energy Reset Procedure 1 To execute active energy reset write data to the D register in the table below The data type is integer D Register Reference No H No Description Effective Range Active energy If other than 1 Invalid Posa 40999 0160 D0001 and D0002 reset If 1 Active energy reset Example To execute active energy reset For station number 01 use PC link communication without checksum and the random write command as shown below Command STX 01010WRW01D0353 0001 ETX CR Response STX 01010K ETX CR 3 7 5 Regenerative Energy Reset Procedure 1 To execute regenerative energy reset write data to the D register in the table below The data type is integer D Register Reference No Description Effective Range g If other than 1 Invalid If 1 Regenerative energy reset Regenerative energy D0354 40354 0161 D0003 and D0004 reset Example To execute regenerative energy reset For station number 01 use PC link
35. G Station Checksum ETX CR element number ADR There is no response data e Example Resets the active energy of PR300 with station number 01 value Command STX DPGO1 Response STX DPGO1 ETXI CR Returns the following response for the above command ETX CR Resets the active energy indicates the checksum Parameter 4 Sets VT ratio parameter 5 Sets CT ratio parameter B Inte grated low cut power parameter C Integration pulse unit Parameter D Integration pulse ON pulse width Parameter E Analog output scaling L Parameter F Analog output scaling H These parameters are not sup ported Even if a command with any of these parameters is received the command is disabled The command is discarded and an error response overranged command data error is returned IM 77C01E01 10E lt Toc gt lt Ind gt lt Appendix Table of ASCII Codes Alphanumeric Codes gt Appendix Table of ASCII Codes Alphanumeric Codes App 1 In order to implement PC link communication create a transmission receiving program by referring to the Table of ASCII Codes below 00 0 E 20 32 e 40 64 eM co 96 ree Be eS COU 02 2 ABSTIX 22 34 42 66 E 62 98 b a 3 Pee 23035 a 3 ot Pe 33 99 o a ee a 36 44 e M 64 o fe o n ma 37 ee e oo Te 65 101 fae
36. Majeure 1 2 3 S Yokogawa does not make any warranties regarding the product except those men tioned in the WARRANTY that is provided separately Yokogawa assumes no liability to any party for any loss or damage direct or indirect caused by the use or any unpredictable defect of the product Be sure to use the spare parts approved by Yokogawa when replacing parts or consumables Modification of the product is strictly prohibited Reverse engineering such as the disassembly or decompilation of software is strictly prohibited No portion of the software supplied by Yokogawa may be transferred exchanged leased or sublet for use by any third party without the prior permission of Yokogawa IM 77C01E01 10E lt Int gt lt Ind gt lt Rev gt Toc 1 Model PR300 Power and Energy Meter Communication Interface RS 485 and Ethernet Communications IM 77C01E01 10E 4th Edition CONTENTS ITF OGUCTION sciis uiine a que vetacuddeaduundcewenesuatenandsassvesetevesvaltus i Documentation CONVENTIONS 2ccc0eceecceneceeccneceneceeceneeceeceeseneseusceeseesenesenseceeenes ii INOUIC OS oroen ee a eee A a sutavepewateaca snus ccdcuscewauctu cuecacevscsvstesdeacdecs estenss iii 1 Communications Overview 1 1 RS 485 Communication Specifications s ssssssusseunseunsennnunennnnnnnnnnnnnnnnnn nenna 1 1 1 2 Ethernet Communication Specifications ccecccssessseeseeesseeeseeeeeeeeeees 1 1 2 Setup 2 1 SETUP Proced
37. Protocol ID 0000 Fixed Transaction ID 1234 Arbitrary 2 byte value TextBinary change For iCount 1 To 12 strCher S amp H Mid strSendData 2 iCount 1 2 Fetch 2 characters and change them into hexadecimal notation binChrs iCount 1 CByte Val strCher Change them into numerical values Next iCount Send Winsock1 SendData binChrs Send command End Sub Private Sub Winsock1 DataArrival ByVal bytesTotal As Long Receive data from PR300 and cut connection with PR300 Dim binData As Byte Dim iCount As Integer Dim strCher As String Receive data Winsock1 GetData binData Receive command Binary change gt Text For iCount 0 To bytesTotal 1 strCher Right Hex binData iCount 2 Change every byte into a character string If Len strCher 1 Then strReceive strReceive 0 Mid strCher 1 1 Add 0 if it becomes one character after change Else strReceive End If Next iCount strReceive strCher I Cut TCP connection Winsock1 Close End Sub IM 77C01E01 10E lt Toc gt lt Ind gt lt 7 Functions and Usage of D Registers gt 7 1 T 7 1 7 2 7 3 Functions and Usage of D Registers Overview of D Registers This section describes the functions and usage of D registers The D registers store the input values statuses and others that are handled by the PR300 By connecting the PR300 to higher level dev
38. made to ensure accuracy in the preparation of this manual Should any errors or omissions come to your attention however please contact your nearest Yokogawa representative or our sales office The document concerning TCP IP software has been created by Yokogawa based on the BSD Networking Software Release 1 that has been licensed from the University of California E Regarding Protection Safety and Prohibition Against Unauthorized Modification 1 2 In order to protect the product and the system controlled by it against damage and ensure its safe use be certain to strictly adhere to all of the instructions and precau tions relating to safety contained in this document Yokogawa does not guarantee safety if products are not handled according to these instructions The following safety symbols are used on the product and or in this manual Symbols Used on the Product and in This Manual AN This symbol on the product indicates that the operator must refer to an explanation in the user s manual in order to avoid the risk of injury or death of personnel or damage to the instrument The manual describes how the operator should exercise special care to avoid electric shock or other dangers that may result in injury or loss of life Protective Grounding Terminal This symbol indicates that the terminal must be connected to ground prior to operating the equipment IM 77C01E01 10E lt Toc gt lt Ind gt lt Rev gt E Force
39. read the status from the slave at station number 11 OB send the OB03002A0004 command 1 The initial value is FFFF Find the XOR value of this initial value and the first character station number 11 2 Refer to the lower byte of the result of executing the function code or the upper byte if the result is regarded as a block of text From the table obtain the value correspond ing to that byte Since the result is F4 in this example you refer to the 244th value in the table and obtain 8701 3 Find the XOR value of the upper byte of the XOR operation in step 1 and the result of step 2 This value is the first character of the CRC 16 calculation 4 Using the result of step 3 remainder as the next initial value make the same calcu lation to evaluate the second character function code 03 Initial value FF FF Convert the hex value to a decimal Station number 0B value find the corresponding number TA in Table 5 2 and substitute the number XOR FFF4 4 into the formula Reference to table 87014 inthe example shown on the left hex value F4 is converted to decimal XOR 87 FE value 244 From Table 5 2 the number Function code 03 corresponding to 244 proves to be 8701 SARDA This number is substituted into the formula XOR 87D Reference to table 81 C1 XOR 81 46 e e e e e e XOR E5 9E Last character 04 XOR ESDA Reference to table 6B 80 Resulting error
40. reset is performed the maximum value minimum value and instantaneous value of voltage and current are reset If remote reset is performed at the start of optional integration optional integration itself stops Even if remote reset is performed the data and parameter setting values of active energy remains unchanged e Command response Number ofbytes 1 2 4 2 2 1 1 Command STX DP A Station Checksum ETX CR element number ADR Number ofbytes 1 2 1 2 2 1 1 Response STX DP A Station Checksum ETX CR element number ADR There is no response data e Example Performs remote reset on PR300 with station number 01 indicates the checksum value Command STX DPAO1 00 ETX CR Returns the following response for the above command Response STX DPA0100 ETX CR Performs remote reset Note Because the PR300 microcomputer is reset after remote reset takes place wait for 5 seconds or more before transmitting the next command IM 77C01E01 10E lt Toc gt lt Ind gt Parameter G Integration reset e Function Resets the active energy e Command response lt 8 PR201 Original Communication Protocol gt 8 23 Number of bytes 1 2 1 2 2 1 1 Command STX DP G Station Checksum ETX CR element number ADR Number of bytes 1 2 1 2 2 1 1 Response STX DP
41. the PR300 A NOTE To activate the settings of IP address subnet mask default gateway and port number set the Ethernet setting switch to ON after setting them Ethernet setting swtich E SW This switch activates the Ethernet communication parameters settings Setting this param eter to ON activates the settings of IP address subnet mask default gateway and port number This parameter automatically reverts to OFF in about 20 seconds after being set to ON IM 77C01E01 10E lt Toc gt lt Ind gt lt 2 Setup gt 2 10 2 2 3 Conditions for Ethernet Serial Gateway Function The Ethernet serial gateway function is a function that reads writes data from to other devices equipped with RS 485 serial communication function using the Modbus TCP protocol via the PR300 With this function the higher level device can access the devices connected to the RS 485 serial communication line in the same way as to access the devices connected to Ethernet Example Higher level device Ethernet 10BASE T 100BASE TX Frenn mwm CELE MET a TIG Wah PR300 ne III cz with Ethernet lre E Iia Station number 01 fixed communication function Sogoas i JA fi JA ahne EN yg Main man nE e MEZ u Mma a ea cua w Ly JUG A E Q 3 i Device with RS 485 serial ab communication function ISU CF Saat ast ae
42. to 255 192 O R W D0282 40282 0119 IP ADDRESS 2 IP address 2 uint 32 1 byte 0 to 255 168 O R W D0283 40283 011A IP ADDRESS 3 IP address 3 uint 32 1 byte 0 to 255 1 O R W D0284 40284 011B IP ADDRESS 4 IP address 4 uint 32 1 byte 0 to 255 1 O R W D0285 40285 011C SUBNET MASK 1 Subnet mask 1 uint 32 1 byte 0 to 255 255 G R W D0286 40286 011D SUBNET MASK 2 Subnet mask 2 uint 32 1 byte 0 to 255 255 O R W D0287 40287 011E SUBNET MASK 3 Subnet mask 3 uint 32 1 byte 0 to 255 255 D R W D0288 40288 011F SUBNET MASK 4 Subnet mask 4 uint 32 1 byte 0 to 255 0 O R W IM 77C01E01 10E lt Toc gt lt Ind gt lt 7 Functions and Usage of D Registers gt 7 5 Bi Ref No H No Register Symbol Register Name Effective Range nitial Value BackUp R W D0289 40289 0120 DEFAULT GATEWAY 1 Default gateway 1 uint 32 1 byte 0 to 255 0 O R W D0290 40290 0121 DEFAULT GATEWAY 2 Default gateway 2 uint 32 1 byte 0 to 255 0 O R W D0291 40291 0122 DEFAULT GATEWAY 3 Default gateway 3 uint 32 1 byte 0 to 255 0 O R W D0292 40292 0123 DEFAULT GATEWAY 4 Default gateway 4 uint 32 1 byte 0 to 255 0 O R W D0293 40293 0124 PORT NUM Port number 502 1024 to 65535 502 R W If other than 1 Invalid D0294 40294 0125 ETHERNET STS Ethernet writing status If 1 Writ
43. to be written at a time is 1 to 64 e For the format of response in the event of failure see subsection 4 1 2 e The command shown below includes the checksum function When performing communication without the checksum do not include the 2 byte checksum element in the command Command Response for normal operation orbits 1 2 2 1 3 5 1 2 1 4 Command STX Station 01 O WWR Register Comma Number Comma dddd1 element number number or space of words or space ST NO n Command continued 4 a 4 2 1 1 dddd2 vee ddddn Checksum ETX CR Write information is specified in a 4 digit character string 0000 to FFFF in hexadecimal ddddn write data of the specified number of words ddddn character string in hexadecimal n 1 to 64 words Number of Bytes 2 2 2 2 1 1 Response STX Station 01 OK Checksum ETX CR element number ST NO Example Write the floating point data 00004120 into the VT ratio register symbol VT L and VT H and CT ratio register symbol CT L and CT H of the PR300 at station number 01 The register numbers for VT ratio are D0201 and D0202 The register numbers for CT ratio are D0203 and D0204 Command STX 01010WWRD0201 04 0000412000004120C3 ETX CR OK will be returned in response to the command above Response STX O101OK5C ETX CR Note To use the response data as th
44. wea IC J to ga Law om ues Tem Z ITa tem f Figure 5 1 Example of Connection for Modbus Communication See Also Chapter 7 for information on the D registers IM 77C01E01 10E lt Toc gt lt Ind gt lt 5 Modbus RTU and ASCII Communication Protocols gt 5 2 For Modbus communication with the PR300 we provide the ASCII mode and RTU mode binary system for the transmission mode Table 5 1 ASCII and RTU Modes Item ASCII Mode RTU Mode Number of data bits 7 bits ASCII 8 bits binary Message start mark colon None Message end mark CR LF None Message length 2N 1 N Data time intervals 1 second or less Between frames 3 5 characters Error detection Longitudinal redundancy check LRC Cyclic redundancy check CRC 16 1 When message length in the RTU mode is assumed to be N message length in ASCII mode is 2N 1 2 LF is a synchronization character indicating that the PR300 is ready to accept the next signal In the RTU mode synchronization is achieved during the time interval between characters If there is a period of time equivalent to 3 5 characters before the next character is received the message being received next is recognized as a new frame In Modbus communication a higher level device identifies each PR300 with a station number of 01 to 99 A NOTE e The PR300 has data D r
45. 0 to communicate with a device such as a PC or FA M3 PLC s UT link module Such a device can be used in commu nication to read write data from to D registers which are internal registers of the PR300 PLC FA M3 Model of UT link module F3LC51 2N RS 485 communication Maximum communication distance 1200 m Maximum number of slave stations to be connected 31 ae pee e m eee IC ee i otk eo 1 ae aA pe ILI aw i he Eo me Lea gt Yona O YONA lt gt a van vem 0 OV ONE Figure 4 1 Example of Connection for PC Link Communication Hereafter PCs are generically called higher level devices In PC link communication a higher level device identifies each PR300 with a station number of 01 to 99 A NOTE The PR300 has data D register the unit of which is two words When 2 word data need to be written or read writing or reading operations must be performed for the 2 word data at the same time Even if data written to the D register is out of the effective range a normal response is returned The part of the written data within the effective range becomes effective on the PR300 when the equivalent setup change status is written for that data IM 77C01E01 10E lt Toc gt lt Ind gt lt 4 PC Link Communication Protocol gt 4 2 4 1 1 Configuration of Command Commands sent from a higher level device to the PR300 cons
46. 000 to GO 500 0 001 6 bytes 7 Start optional integration 1 No data 0 byte 8 Stop optional integration 1 No data 0 byte 9 Maximum minimum values initialization No data 0 byte B Read maximum voltage 1 value O 000E6 0 0 to 9 999E 6 V 0 001E 2 V 8 bytes Cc Read minimum voltage 1 value E O 0 to 9 999E 6 V 0 001E 2 V 8 bytes D Read maximum current 1 value 3 E O 0 to 9 999E 5 A 0 001E 0 A 8 bytes Data of parameters G 2 3 4 H J 5 K L and 6 F Read measured values in batch power factor measurement 81 byte G Read electric energy E O 00000E 3 to 99999E 6 Wh 8 bytes H Instantaneous voltage 2 O 000E6 0 0 to 9 999E 6 V 0 001E 2 V 8 bytes J Instantaneous voltage 3 E O 0 to 9 999E 6 V 0 001E 2 V 8 bytes K Instantaneous current 2 E O 0 to 9 999E 5 A 0 001E 0 A 8 bytes L Instantaneous current 3 O 000E6 0 0 to 9 999E 5 A 0 001E 0 A 8 bytes Read measured value and Data of parameters G 2 3 4 H J 5 K L 6 M maximum minimum values in batch power factor measurement B C D and N to T 153 bytes N Read maximum voltage 2 value O 000E6 0 0 to 9 999E 6 V 0 001E 2 V 8 bytes P Read maximum voltage 3 value E O 0 to 9 999E 6 V 0 001E 2 V 8 bytes Q Read minimum voltage 2 value E O 0 to 9 999E 6 V 0 001E 2 V 8 bytes R Read minimum voltage 3 value O 000E6 0 0 to 9 999E 6 V 0 001E 2 V 8 bytes S Read maximum current 2 value E O 0 to 9 999E 5 A 0 001E 0 A 8 bytes T Read maximum current 3 value E O 0 to 9 999E 5 A 0 00
47. 00D8 D0212 to D0216 are validated If other than 1 Invalid If 1 Writing is executed Initial value of measurement item for analog output 0 active power Example To set the measurement item for analog output to 3 voltage 1 For station number 01 use PC link communication without checksum and the random write command as shown below Command STX 01010WRW02D0212 0003 D0217 0001 ETX CR Response STX 01010K ETX CR Ay NOTE e A measurement item for analog output value can be set for the PR300 with analog output e Different types of the PR300 can measure different items and so the values that can be set to the D register differ depending on the PR300 type If a value that cannot be written to the D register is written it will be invalid The table below shows the values that cannot be set for four types of the PR300 Phase and Wire System Values that cannot be Set Single phase two wire 4 Voltage 2 5 Voltage 3 7 Current 2 and 8 Current 3 Single phase three wire 5 Voltage 3 and 8 Current 3 Three phase three wire 4 Voltage 2 and 7 Current 2 Three phase four wire 2 5 element 4 Voltage 2 and 7 Current 2 e When the PR300 is the three phase four wire system 2 5 element the following measurement items can be measured only when the current is in a state of equilib rium 1 Reactive power 2 Apparent power 6 Current 1 8 Current 3 a
48. 0226 0001 ETX CR Response STX 0101OK ETX CR A NOTE A demand current alarm point value can be set for the PR300 with demand measuring function IM 77C01E01 10E lt Toc gt lt Ind gt lt 3 Procedures for Setting PR300 Functions gt 3 15 3 4 6 Demand Alarm Release Function Procedure 1 Write a demand alarm release function value to the D register in the table below The data type is integer 2 After writing that value write 1 to the demand measurement writing status register D0226 D Register Reference No H No Description Effective Range pozas aozas oomo peapa ense la as posan 40226 00E1 statue DOS Ia 10 DOSa i wae eed validated Initial value of demand alarm release function 0 automatic release Example To set the demand alarm release function to 0 automatic release For station number 01 use PC link communication without checksum and the random write command as shown below Command STX O1010WRW02D0225 0000 D0226 0001 ETX CR Response STX 0O101OK ETX CR A NOTE A demand alarm release function value can be set for the PR300 with demand mea suring function e When the demand alarm release function is used by digital input releasing via com munication is not possible IM 77C01E01 10E lt Toc gt lt Ind gt lt 3 Procedures for Setting PR300 Functions gt 3 16 3 5 Communication Setting 3 5 1 Protocol Procedure 1 Write a prot
49. 0CF Measurement item for 1 Regenerative energy pulse output 2 LEAD reactive energy 3 LAG reactive energy 4 Apparent energy Pulse output writing status D0211 40211 00D2 D0208 D0209 and D0210 are validated If other than 1 Invalid If 1 Writing is executed Initial value of measurement item for pulse output O active energy Example To set the measurement item for pulse output to 1 LEAD reactive energy For station number 01 use PC link communication without checksum and the random write command as shown below Command STX 01010WRW02D0208 0001 D0211 0001 ETX CR Response STX 01010K ETX CR A NOTE e A measurement item for pulse output value can be set for the PR300 with pulse output e When the PR300 is the three phase four wire system 2 5 element the following measurement items can be measured only when the current is in a state of equilib rium 2 LEAD reactive energy 3 LAG reactive energy and 4 Apparent energy IM 77C01E01 10E lt Toc gt lt Ind gt lt 3 Procedures for Setting PR300 Functions gt 3 6 3 2 2 Pulse Unit Procedure 1 Write a pulse unit value to the D register in the table below The data type is integer 2 After writing that value write 1 to the pulse output writing status register D0211 D Register Reference No H No Description Effective Range Pulse output writing status If other than 1 Invalid D021
50. 0OK ETX CR Ay NOTE After remote reset is executed wait for 10 seconds or more before sending another com mand It takes about 10 seconds to reset Even when PR300 was reset by power supply switch off on also wait for 10 seconds or more before sending another command IM 77C01E01 10E lt Toc gt lt Ind gt lt 3 Procedures for Setting PR300 Functions gt 3 32 3 7 2 Maximum Minimum Values Reset Procedure 1 To execute maximum minimum values reset write data to the D register in the table below The data type is integer D Register Reference No H No Description Effective Range Maximum minimum values If other than 1 Invalid D0351 40351 015E D0101 to D0138 reset If 1 Maximum minimum values reset Example To execute maximum minimum values reset For station number 01 use PC link communication without checksum and the random write command as shown below Command STX 01010WRW01D0351 0001 ETX CR Response STX 0101OK ETX CR 3 7 3 Energy Value All Reset Procedure 1 To execute energy value all reset write data to the D register in the table below The data type is integer D Register Reference No H No Description Effective Range Energy value all reset If other than 1 Invalid If 1 Energy value all reset Relevant items are as follows D0352 40352 015F Active energy D0001 D0002 Regenerative energy D0003 D0004 LEAD reactive energy D0005
51. 1 40211 00D2 D0208 D0209 and D0210 if 4 Writing is executed are validated Initial value of pulse unit 10 1000 Wh pulse Example To set the pulse unit to 100 Wh pulse write 0001 For station number 01 use PC link communication without checksum and the random write command as shown below Command STX 01010WRW02D0209 0001 D0211 0001 ETX CR Response STX 0101OK ETX CR A NOTE e A pulse unit value can be set for the PR300 with pulse output e To set the pulse unit value via communication set it to 1 100 the value of the displayed true value e g set it to 5 when setting the pulse unit value to 500 Wh pulse IM 77C01E01 10E lt Toc gt lt Ind gt 3 2 3 ON Pulse Width 1 Write an ON pulse width value to the D register in the table below The data type is integer lt 3 Procedures for Setting PR300 Functions gt 2 After writing that value write 1 to the pulse output writing status register D0211 A NOTE When the value to be set for the ON pulse width is greater than the value calculated by the following equation the value cannot be set ON pulse w Pulse unit Wh pls x 60 x 60 x 1000 idth ms Secondary rated power W x VT ratio x CT ratio x 1 2 x 2 D Register Reference No H No Description Effective Range i 1 to 127 N pul th D0210 40210 00D1 ON pulse wid inte x dees Pulse output writing status D0211 40211 00D2 D020
52. 10E lt Toc gt lt Ind gt lt 2 Setup gt 2 1 1 Procedure for RS 485 Communication Example Maximum communication distance 1200 m Maximum number of slave stations to be connected 31 i ji PRso5_ mym 907 o amaa a Z E ad BEMA i e s SOMA Down oam yooawa S Station number 01 Station number 02 Station number 10 Station number 20 arbitrary arbitrary arbitrary arbitrary 7 Communication parameters setting for PR300 Set up the communication function using the front panel keys Subsection 2 2 1 Conditions for RS 485 Communication 2 Connect a higher level device with PR300 Subsection 2 3 1 Wiring for RS 485 Communication 3 Create communication programs for the higher level device to perform communication Chapter 3 Procedures for Setting PR300 Functions For communication protocol see Chapter 4 PC Link Communication Protocol Chapter 5 Modbus RTU and ASCII Communication Protocols Chapter 8 PR201 Original Communication Protocol For data storage location see Chapter 7 Functions and Usage of D Registers IM 77C01E01 10E lt Toc gt lt Ind gt lt 2 Setup gt 2 3 2 1 2 Procedure for Ethernet Communication Example Higher level device 4 levels for 1OBASE T HUB 2 levels f
53. 10E lt Toc gt lt Ind gt lt 6 Modbus TCP Communication Protocol gt 6 1 0 Example Set both the VT ratio and CT ratio to 1 Request 00010000000F01 1000C800040800003F8000003F80 M ME 6 7 8 00201 and D0203 and D0202 D0204 1 0001 Arbitrary 2 byte data 2 0000 Protocol ID 0000 fixed 3 OOOF Number of bytes 4 01 Unit ID 01 indicating PR300 5 10 Function code 16 6 OOC8 D register start number 201 7 0004 Number of registers 4 8 08 Byte count The VT ratio and CT ratio data are floating point values The combined value of D0201 and D0202 00003F80 represents 1 That of D0203 and D0204 which is also 00003F80 represents 1 as well the upper four digits 3F80 and the lower four digits 0000 are reversed The floating point value of 3F800000 is the decimal equivalent of 1 The following response will be returned to the request above Response 00010000000601 1000C 80004 1 8 3 4 6 7 1 0001 Arbitrary 2 byte data 2 0000 Protocol ID 0000 fixed 3 0006 Number of bytes 4 01 Unit ID 01 indicating PR300 5 10 Function code 16 6 OOC8 D register start number 201 7 0004 Number of D registers 4 Zz umbers in quotation marks are hexadecimal IM 77C01E01 10E lt Toc gt lt Ind gt lt 6 Modbus TCP Communication Protocol gt 6 11 6 4 4 Response Error Codes
54. 10E 4th Edition June 20 2008 00 YOKOGAWA YOKOGAWA ELECTRIC CORPORATION Headquarters 2 9 32 Nakacho Musashino shi Tokyo 180 8750 JAPAN Branch Sales Offices Nagoya Osaka Hiroshima Fukuoka Sapporo Sendai Ichihara Toyota Kanazawa Okayama and Kitakyusyu YOKOGAWA CORPORATION OF AMERICA 2 Dart Road Newnan Georgia 30265 1094 U S A Phone 1 800 888 6400 Fax 1 770 254 0928 YOKOGAWA EUROPE B V Databankweg 20 Amersfoort 3821 AL THE NETHERLANDS Phone 31 33 464 1611 Fax 31 33 464 1610 Branch Sales Offices Wien Austria Zaventem Belgium Ratingen Germany Madrid Spain Runcorn United Kingdom Milano Italy Velizy Villacoublay France Budapest Hungary Stockholm Sweden Sola Norway Warszawa Poland Vila Nova de Gaia Portugal Bucharest Romania YOKOGAWA AMERICA DO SUL LTDA Praca Acapulco 31 Santo Amaro Sao Paulo SP BRAZIL Phone 55 11 5681 2400 Fax 55 11 5681 4434 YOKOGAWA ENGINEERING ASIA PTE LTD 5 Bedok South Road 469270 SINGAPORE Phone 65 6241 9933 Fax 65 6241 2606 YOKOGAWA ELECTRIC KOREA CO LTD 14 1 Yangpyongdong 4Ga Youngdeungpo Gu Seoul 150 866 KOREA Phone 82 2 2628 6000 Fax 82 2 2628 6400 YOKOGAWA AUSTRALIA PTY LTD Tower A 112 118 Talavera Road Macquarie Park N S W 2113 AUSTRALIA Phone 61 2 8870 1100 Fax 61 2 8870 1111 YOKOGAWA INDIA LTD Plot No 96 Electronic City Complex Hosur Road Bangalore 560100 INDIA Phone
55. 1E 0 A 8 bytes U V a WwW Read model and suffix codes 14 bytes X PR201 0 h b Z Error response Oo 2 bytes A When optional integration is started or stopped through communication the subsequent optional integration control signals are disabled For this reason optional integration must be controlled by either communication or optional integration control signals After a power failure optional integration control is reset IM 77C01E01 10E lt Toc gt lt Ind gt lt 8 PR201 Original Communication Protocol gt 8 4 Command DP Parameter Meaning Model Response data format Response data range Response data size 0 Read setting value No data See 2 for response 16 byte 1 2 3 pecan 4 Set VT ratio Not available in PR300 OOI 00001 to 06000 5 bytes 5 Set CT ratio Not available in PR300 00 05 to 32000 5 bytes 6 7 8 9 A Remote reset No data 0 byte B Integrated low cut power Not available in PR300 00 1 to 99 9 4 bytes Cc Integration pulse unit Not available in PR300 E O 6 667E 6 to 1 000E 1 8 bytes D Integration pulse ON pulse width Not available in PR300 ODI 0010 to 1270 4 bytes E Analog output scaling L Not available in PR300 A or 4800 to 4800 5 bytes F Analog output scaling H
56. 2 1 22 Response continued 4 4 2 j 1 Start Number of register registers Checksum ETX CR specified for specified for write write refreshing refreshing 1 0 The mark indicates fields the FA M3 s UT link module refers to Note 1 Model and suffix code information Note 2 Version number and revision number PR300 s7 OO AA lt Model gt lt Suffix code gt a lt Revision number gt zz Returns the currently selected phase and wire system lt Version number gt 1 Single phase two wire system 2 Single phase three wire system x 3 Three phase three wire system Example 0102 4 Three phase four wire system 5 Three phase four wire system 2 5 element x Returns the currently selected input range 1 150 V 1 A 2 150 V 5 A 3 300 V 1 A 4 300 V 5 A 5 600 V 1 A 6 600 V 5 A and x are decided by the settings of the phase and wire system and the input range Returns the suffix code as is version number revision number Example Suffix code PR300 32333 6A 0 Selected phase and wire system Single phase three wire system and Selected input range 300 V 5 A then PR300243336A Not returned Example To read the model suffix code etc of PR300 at station number 01 Command STX 01010INF605 ETX CR In response to this command the following values will be returned Phase and wire system Single phase three wire system Rated input voltage current 300 V 5 AAC I O function An
57. 26 40226 00E1 status D0218 to D0225 are validated If other than 1 Invalid If 1 Writing is executed Initial value of demand alarm mask time 1 minute Example To set the demand alarm mask time to 20 minutes For station number 01 use PC link communication without checksum and the random write command as shown below Command STX 0O1010WRW02D0220 0014 D0226 0001 ETX CR Response STX 0101OK ETX CR A NOTE A demand alarm mask time value can be set for the PR300 with demand measuring function IM 77C01E01 10E lt Toc gt lt Ind gt lt 3 Procedures for Setting PR300 Functions gt 3 13 3 4 4 Demand Power Alarm Point Procedure 1 Write a demand power alarm point value to the two D registers in the table below The data type is 4 byte floating point 2 After writing that value write 1 to the demand measurement writing status register D0226 D Register Reference No H No Description Effective Range D0221 40221 00DC Demand power alarm point float lower 2 bytes 1 to 1000 Demand power alarm point Unit kW D0222 40222 o00DD float upper 2 bytes Demand measurement writing If other than 1 Invalid D0226 40226 00E1 status D0218 to D0225 are If 1 Writing i exe uted validated Initial value of demand power alarm point 100 kW Example To set the demand power alarm point to 10 0 kW For station number 01 use PC link communication without che
58. 32 lower 2 bytes 0 to 99 999 999 kVarh R D0006 40006 0005 Lead kVarh H LEAD reactive energy uint 32 upper 2 bytes D0007 40007 0006 Lag kVarh L LAG reactive energy uint 32 lower 2 bytes gt 0 to 99 999 999 kVarh R D0008 40008 0007 Lag kVarh H LAG reactive energy uint 32 upper 2 bytes D0009 40009 0008 kVAhL Apparent energy uint 32 lower 2 bytes 0 to 99 999 999 kVAh R D0010 40010 0009 kVAhH Apparent energy uint 32 upper 2 bytes Optional active energy current value D0011 40011 000A WhiL uint 32 lower 2 bytes 0 to 99 999 Wh R Optional active energy current value D0012 40012 000B Wh1 H 0 to 99 999 Wh D0015 to D0020 D0021 40021 0014 WL Active power float lower 2 bytes 0 0 to 9 999 999 9 W R D0022 40022 0015 WH Active power float upper 2 bytes D0023 40023 0016 VarL Reactive power float lower 2 bytes 0 0 to 9 999 999 9 Var R D0024 40024 0017 Var H Reactive power float upper 2 bytes D0025 40025 0018 VAL Apparent power float lower 2 bytes 0 0 to 9 999 999 9 VA R D0026 40026 0019 VAH Apparent power float upper 2 bytes D0027 40027 001A VIL Voltage 1 float lower 2 bytes 0 0 to 9 999 999 9 V R D0028 40028 001B V1H Voltage 1 float upper 2 bytes D0029 40029 001C V2L Voltage 2 float lower 2 bytes 0 0 to 9 999 999 9 V
59. 40201 00C8 VT ratio float lower 2 bytes 4 to 6000 D0202 40202 00C9 VT ratio float upper 2 bytes Setup change status If other than 1 Invalid D0207 40207 00CE D0201 to D0206 are validated If 1 Writing is executed Initial value of VT ratio 1 4 byte floating point data 3F800000 Example To set the VT ratio to 10 For station number 01 use PC link communication without checksum and the random write command as shown below If 10 is converted into a 4 byte floating point value the value is 4120 0000 Command STX 01010WRW03D0201 0000 D0202 4120 D0207 0001 ETX CR Response STX 0101O0K ETX CR A NOTE e When changing the VT ratio the integrated values of active energy reactive energy apparent energy optional active energy and regenerative energy will return to 0 The values of the demand alarm point and the scaling of analog output will also be initialized e Setthe VT and CT ratios so that secondary rated power x VT ratio x CT ratio is smaller than 10 GW When this value is 10 GW or greater writing to D registers will be invalid no error is output IM 77C01E01 10E lt Toc gt lt Ind gt lt 3 Procedures for Setting PR300 Functions gt 3 3 3 1 2 Setting of CT Ratio Procedure 1 Write a CT ratio to the two D registers in the table below The data type is 4 byte floating point 2 After writing that value write 1 to the setup change status register D0207
60. 5 Modobus RTU and ASCII Communica tion Protocols or Chapter 6 Modbus TCP Communication Protocol according to the instructions in this chapter For details of each function refer to the PR300 Power and Energy Meter User s Manual electronic manual For how to read the tables in this chapter refer to Chapter 7 Functions and Usage of D Registers The PR300 offers registers for floating point data To perform settings via communi cation from higher level device floating point data is displayed by IEEE754 single precision A NOTE e The PR300 has data D register the unit of which is two words When 2 word data need to be written or read writing or reading operations must be performed for the 2 word data at the same time e Even if data written to the D register is out of the effective range a normal response is returned The part of the written data within the effective range becomes effective on the PR300 when the equivalent setting change status is written for that data IM 77C01E01 10E lt Toc gt lt Ind gt lt 3 Procedures for Setting PR300 Functions gt 3 2 3 1 Basic Setting 3 1 1 Setting of VT Ratio Procedure 1 Write a VT ratio to the two D registers in the table below The data type is 4 byte floating point 2 After writing that value write 1 to the setup change status register D0207 D Register Reference No H No Description Effective Range D0201
61. 5 6 7 1 0001 Arbitrary 2 byte data 2 0000 Protocol ID 0000 fixed 3 0006 Number of bytes 4 01 Unit ID 01 indicating PR300 5 03 Function code 03 6 00C8 D register start number 201 7 0004 Number of D registers 4 The following response will be returned to the request above Response 00010000000B01030800003F8000003F80 1 2 3 4 5 6 D0201 and D0203 and D0202 D0204 The VT ratio and CT ratio data are floating point values The combined value of D0201 and D0202 00003F80 represents 1 That of D0203 and D0204 which is also 00003F80 represents 1 as well the upper four digits 3F80 and the lower four digits 0000 are reversed The floating point value of 3F800000 is the decimal equivalent of 1 1 0001 The arbitrary 2 byte data in the request 2 0000 Protocol ID 0000 fixed 3 000B Number of bytes 4 01 Unit ID 01 indicating PR300 5 03 Function code 03 6 08 Byte count Numbers in quotation marks are hexadecimal IM 77C01E01 10E lt Toc gt lt Ind gt lt 6 Modbus TCP Communication Protocol gt 6 7 06 Writes data into D register Function This function code writes data into a specified D register number e The maximum number of D registers to be written into at a time is 1 e For the format of response in the event of failure see subsection 6 4 4 Request for nomal operation
62. 6B 65 5 Repeat steps 1 to 4 to perform the calculation up to the last character string 04 6 Reverse the order of the upper and lower bytes of 6B65 and append 656B to the end of the character string as the error code 0B03002A0004656B First reverse the order of the upper and lower bytes of the calculated result then compare the value with the received data or store the value in the transmission buffer Numbers in quotation marks are hexadecimal IM 77C01E01 10E lt Toc gt lt Ind gt lt 5 Modbus RTU and ASCII Communication Protocols gt Table 5 2 Results of Performing CRC on Oth to 255th Values at A001 Number 0 1 2 3 4 5 6 7 Result 0000 COC1 C181 0140 C301 03C0 0280 C241 Number 8 9 10 11 12 13 14 15 Result C601 O6CO 0780 C741 0500 C5C1 C481 0440 Number 16 17 18 19 20 21 22 23 Result CCO1 OCCO OD80 CD41 OFOO CFC1 CE81 0E40 Number 24 25 26 27 28 29 30 31 Result OAOO CAC1 CB81 0B40 C901 09CO 0880 C841 Number 32 33 34 35 36 37 38 39 Result D801 18C0 1980 D941 1B00 DBC1 DA81 1A40 Number 40 41 42 43 44 45 46 47 Result 1E00 DEC1 DF81 1F40 DDO1 1DCO 1C80 DC41 Number 48 49 50 51 52 53 54 55 Result 1400 D4C1 D581 1540 D701 17C0 1680 D641 Numb
63. 8 D0209 and D0210 If other than 1 Invalid are validated If 1 Writing is executed Initial value of ON pulse width 5 50 ms Example To set the ON pulse width to 100 ms write OOOA For station number 01 use PC link communication without checksum and the random write command as shown below Command STX 01010WRW02D0210 000A D0211 0001 ETX CR Response STX 01010K ETX CR A NOTE An ON pulse width value can be set for the PR300 with pulse output e To set the ON pulse width value via communication set it to 1 10 the value of the displayed true value e g set it to 5 when setting the ON pulse width value to 50 ms IM 77C01E01 10E lt Toc gt lt Ind gt lt 3 Procedures for Setting PR300 Functions gt 3 8 3 3 Setting Analog Output 3 3 1 Selection of Measurement Item for Analog Output Procedure 1 Write a measurement item for analog output value to the D register in the table below The data type is integer 2 After writing that value write 1 to the analog output writing status register D0217 D Register Reference No H No Description Effective Range Active power Reactive power Apparent power Voltage 1 Voltage 2 Voltage 3 Current 1 Current 2 Current 3 Power factor 0 Frequency 0 1 2 3 D0212 40212 00D3 Measurement item for analog output 6 7 8 9 1 Analog output writing status D0217 40217
64. 999 990 A R D0050 40050 0031 DEMAND A3 H Demand current 3 float upper 2 bytes D0051 to D0098 D0099 40099 0062 ADERROR ADC ADC failure see P 7 6 R D0100 40100 0063 ERROR Various types of error information see P 7 6 R D0101 40101 0064 W MAXL Maximum active power float lower 2 bytes 0 0 to 9 999 999 9 W R D0102 40102 0065 W MAX H Maximum active power float upper 2 bytes D0103 40103 0066 WMINL Minimum active power float lower 2 bytes 0 0 to 9 999 999 9 W R D0104 40104 0067 WMINH Minimum active power float upper 2 bytes D0105 40105 0068 Var MAXL Maximum reactive power float lower 2 bytes 0 0 to 9 999 999 9 Var R D0106 40106 0069 Var MAX H Maximum reactive power float upper 2 bytes D0107 40107 006A Var MINL Minimum reactive power float lower 2 bytes a 0 0 to 9 999 999 9 Var R D0108 40108 006B Var MINH Minimum reactive power float upper 2 bytes IM 77C01E01 10E lt Toc gt lt Ind gt lt 7 Functions and Usage of D Registers gt Register Symbol Register Name Effective Range Initial Value D0109 40109 006C VA MAXL Maximum apparent power float lower 2 bytes 0 0 to 9 999 999 9 VA x R D0110 40110 006D VA MAX H Maximum apparent power float
65. 9999 kWh 1 kWh 5 bytes 2 Read optional electric Previous value C1 oO 00000 to 99999 Wh 1 Wh 10 bytes energy 1 Current value 00000 to 99999 Wh 4 Wh 3 Instantaneous power E O 0 to 9 999E 6 W 0 001E 2 W 9 bytes 4 Instantaneous voltage 1 O E O 0 to 9 999E 6 V 0 001E 2 V 8 bytes 5 Instantaneous current 1 E O 0 to 9 999E 5 A 0 001E O0 A 8 bytes 6 Instantaneous power factor D0 500 to G1 000 to GO 500 0 001 6 bytes 7 Start optional integration 1 No data 0 byte 8 Stop optional integration 1 No data 0 byte 9 Maximum minimum values initialization No data 0 byte A Readimeasured value and Data of parameters 1 to 6 and B to D 70 bytes maximum minimum values in batch B Read maximum voltage 1 value 0 E O 0 to 9 999E 6 V 0 001E 2 V 8 bytes Cc Read minimum voltage 1 value E O 0 to 9 999E 6 V 0 001E 2 V 8 bytes D Read maximum current 1 value E O 0 to 9 999E 5 A 0 001E O A 8 bytes E Read maximum current 2 value 0 E O 0 to 9 999E 5 A 0 001E 0 A 8 bytes Command DG Parameter Meaning Response data Format Range Resolution Size 5 Read optional electric Previous value Ol oO 00000 to 99999 Wh 1 Wh 10 bytes energy 1 Current value 00000 to 99999 Wh 4 Wh 3 Instantaneous power Bc E O 0 to 9 999E 6 W 0 001E 2 W 9 bytes 4 Instantaneous voltage 1 O 000E6 0 0 to 9 999E 6 V 0 001E 2 V 8 bytes 5 Instantaneous current 1 E O 0 to 9 999E 5 A 0 001E 0 A 8 bytes 6 Instantaneous power factor D0 500 to G1
66. ALM MASK Demand alarm mask time Hoos luunue 1 O RW TIME 1 to Demand period minute D0221 40221 00DC DEMAND ALMW L Demand power alarm point float lower 2 bytes 1 to 1000 kW 100 O R W D0222 40222 OODD DEMAND ALMWH Demand power alarm point float upper 2 bytes D0223 40223 00DE DEMAND ALMAL Demand current alarm point float lower 2 bytes 1 to 1000 A 100 Oo R W D0224 40224 OODF DEMAND ALMAH Demand current alarm point float upper 2 bytes D0225 40225 o0E0 DEMAND ALM Demand alarm release function BeON 19 pass o O RW Manual release If other than 1 Invalid D0226 40226 00E1 DEMAND STS Demand measurement writing status If 1 Writing is executed x Ww D0218 to D0225 are validated D0227 to D0270 0 PC link without checksum 1 PC link with checksum 2 Modbus ASCII D0271 40271 010E PSL Protocol 3 Modbus RTU 1 R W 4 Modbus TCP 5 PR201 original D0272 40272 010F BPS Baud rate 0 2400 bps 1 9600 bps 2 19200 bps 1 oO R W D0273 40273 0110 PRI Parity 0 NONE 1 EVEN 2 ODD 0 O R W D0274 40274 0111 STP Stop bit 1 1 bit 2 2 bit 1 O R W D0275 40275 0112 DLN Data length 0 8 bit 1 7 bit 0 G R W D0276 40276 0113 ST No Station number 01 to 99 01 O R W If other than 1 Invalid D0277 40277 0114 RS485 STS RS 485 writing status If 1 Writing is executed x Ww D0271 to D0276 are validated D0278 to D0280 D0281 40281 0118 IP ADDRESS 1 IP address 1 uint 32 1 byte 0
67. Effective Range D0275 40275 0112 Data length a RS 485 writing status 1 Invali D0277 40277 0114 D0271 to D0276 are i ae aa validated Initial value of data length 0 8 bits A NOTE When Modbus TCP is selected for the protocol the data length is fixed and unchangeable at 8 bits Example To set the data length to 1 7 bits For station number 01 use PC link communication without checksum and the random write command as shown below Command STX 01010WRW02D0275 0001 D0277 0001 ETX CR Response STX 0101OK ETX CR IM 77C01E01 10E lt Toc gt lt Ind gt lt 3 Procedures for Setting PR300 Functions gt 3 21 3 5 6 Station Number Procedure 1 To set the station number write data to the D register in the table below The data type is integer 2 After writing that value write 1 to the RS 485 writing status register D0277 D Register Reference No H No Description Effective Range D0276 40276 0113 Station number 01 to 99 RS 485 writing status If other than 1 Invalid D0277 40277 0114 D0271 to D0276 are If 1 Writing is executed validated Initial value of station number 01 A NOTE When Modbus TCP is selected for the protocol the station number is fixed and unchange able at 01 Example To set the station number to 02 For station number 01 use PC link communication without checksum and the random write command as shown below
68. F has been specified in word when in writing operation specification e The position of a start for a data load save or other command is out of the address range Out of data count range e The specification of the number of words is out of the specified range Monitor error e An attempt was made to execute monitoring without specifying the monitor WRS Parameter error e An illegal parameter is set Checksum error e The sum does not match the expected value Internal buffer overflow e A data value greater than the specified was received 44 Character reception timeout The end of data or end of text character has not been received Table 4 2 List of Detailed Error Codes EC2 Error Code EC1 Meaning Detailed Error Code EC2 03 Register specification error Parameter number where error occurred HEX This is the sequence number of a parameter that first resulted in an error when counted from the leading parameter 04 Out of setpoint range e g Register name T error 05 Out of data count range STX 01010WRW02D0043 3F80 A0044 0000 ETX CR Parameter numbers 1 2 3 4 5 08 Parameter error STX 0101ER0304WRW ETX CR In this case EC1 03 and EC2 04 For error codes other than those noted as EC1 there is no EC2 meaning and 0x00 is returned as a response IM 77C01E01 10E lt Toc gt lt Ind gt lt 4 PC Link Communication Protocol gt 4 5 4 1 4 Specifying B
69. FF in hexadecimal ddddn read data of the specified number of words ddddn character string in hexadecimal n 1 to 32 words Example Read the voltage 1 register symbol V1 Land V1 H and current 1 register symbol A1 L and A1 H of the PR300 at station number 01 The register numbers for voltage 1 are D0027 and D0028 The register numbers for current 1 are D0033 and D0034 Command STX 01010WRR04D0027 D0028 D0033 D003405 ETX CR The data 800V for the voltage 1 and 50A for the current 1 will be returned in response to the command above Response STX 01010K000044480000424882 ETX CR t s00 V and 50 A in decimal See the Note below Note To use the response data as the reading reverse the order of the upper and lower words Voltage 1 floating point hex data 0000 4448 gt reversed Hex 4448 0000 Decimal 800 Current 1 floating point hex data 0000 4248 reversed Hex 4248 0000 Decimal 50 IM 77C01E01 10E lt Toc gt lt Ind gt lt 4 PC Link Communication Protocol gt 4 1 0 WRW Writes data into D registers on a word by word basis in random order Function This function code writes register information specified for each register into the registers specified in a random order by the specified number of words e The number of words to be written at a time is 1 to 32 e For the format of response in the event of failure see subsection 4 1 2 e The command shown below includes the checksum
70. If other than 1 Invalid D0384 40384 017F kVAh STS Apparent energy writing status If 1 The values of D0382 and D0383 x Ww are written as the integrated values D0385 to D0399 If other than 1 Invalid D0400 40400 018F RMT RST Remote reset If 1 PR300 is reset the same effect 0 x Ww as turning the power off and then on D register with a blank cannot be used Writing to this area is not guaranteed IM 77C01E01 10E lt Toc gt lt Ind gt lt 7 Functions and Usage of D Registers gt 7 6 D0099 and D0100 are designed to represent two or more events such as errors and status using combinations of bits within the register If any of the events shown in the following tables occur the corresponding bit is set to 1 The bit remains 0 if the event does not occur Note that bits with blank fields in the tables are not in use Bit Information for ADC Failure D0099 Bit Symbol Failure Status Description 0 to 14 15 ADC_COMM_FAIL ADC communication error Occurs if the ADC fails Bit Information for Various Types of Errors D0100 m Failure Status System data error calibration data error parameter error backup data error EEPROM error Overranged power Overranged apparent power Overranged reactive power Overranged current A 1 Overranged current Overranged current Overranged voltage V 1 V 2 A 2 A 3 V olnlolala jln o F
71. Manual electronic manual IM 77C01E01 10E lt Toc gt lt Ind gt lt 2 Setup gt 2 13 2 3 2 Wiring for Ethernet Communication To use the Ethernet communication function connect a higher level device with the PR300 with Ethernet communication function using 1OBASE T 100BASE TX 10BASE T 100BASE TX are Ethernet connection methods using twisted pair cables The transmission rates are 10 Mbps 100 Mbps In 10BASE T 100BASE TX networks higher level devices such as a PC are connected in a star pattern through a hub A WARNING To avoid an electric shock be sure to turn off the power supply source to the equipment involved before you start wiring Use hubs and twisted pair cables that conforms to the Ethernet specifications The maxi mum number of hubs connectable in cascade configuration is 4 for 1OABSE T and 2 for 100BASE TX The maximum allowable length of twisted pair cables is 100 meters Read the user s manual of each device carefully before wiring Devices that can be connected to Ethernet Data transmission and reception HUB Ethernet Ethernet Port of PR300 PR300 with The PR300 can detect 10BASE T or Ethernet 100BASE TX automatically The LEDs of communication Ethernet port show its status function Link LED upper side E Color Meaning Sraa Off No Link Amber 10 Mbps Green 100 Mbps Activity LED lower side Color Meaning Off No Activity Amber Half duplex Green Fu
72. Module Setup Procedure Example This section explains the procedure for setting up the FA M3 s UT link module when the Automatic mode is used 1 Setting Up the UT Link Module Before following the procedure always make sure that the FA M3 s UT link module is turned off Then open the inner cover and follow the setup steps described below Configure the DIP switch of the UT link module as shown below Switch No Status Description swi ON Data length 8 bits SW2 SW3 ON Parity none initial value even SW4 OFF Stop bit 1 bit SW5 OFF Checksum none SW6 ON Termination character yes CR SW7 ON Mode Automatic mode Sw8 OFF Not used Set the Baud Rate switch to 9600 bps Set the Communication Mode switch to 7 Normal 2 Setting Up the PR300 Set the communication conditions of the PR300 as shown below 4 16 For details on how to set the conditions see the PR300 Power and Energy Meter Uuser s Manual electronic manual Parameter Communication protocol Description PC link communication without checksum Data length 8 bits Parity None Stop bit 1 bit Baud rate 9600 bps 3 Turn onthe FA M3 IM 77C01E01 10E lt Toc gt lt Ind gt lt 4 PC Link Communication Protocol gt 4 1 7 4 4 Sample Program 4 4 1 Example of BASIC Program for Send and Receive This section shows an example of acommand sending and response receiving program created wit
73. Period Procedure 1 Write a demand period value to the D register in the table below The data type is integer 2 After writing that value write 1 to the demand measurement writing status register D0226 D Register Reference No H No Description Effective Range 1 to 60 D0219 40219 00DA Demand period Demand alarm mask time to 60 Unit minute Demand measurement writing D0226 40226 00E1 status D0218 to D0225 are validated If other than 1 Invalid If 1 Writing is executed Initial value of demand period 30 minutes Example To set the demand period to 20 minutes For station number 01 use PC link communication without checksum and the random write command as shown below Command STX 01010WRW02D0219 0014 D0226 0001 ETX CR Response STX 01010K ETX CR A NOTE A demand period value can be set for the PR300 with demand measuring function IM 77C01E01 10E lt Toc gt lt Ind gt lt 3 Procedures for Setting PR300 Functions gt 3 12 3 4 3 Demand Alarm Mask Time Procedure 1 Write a demand alarm mask time value to the D register in the table below The data type is integer 2 After writing that value write 1 to the demand measurement writing status register D0226 D Register Reference No H No Description Effective Range 1 to 59 D0220 40220 00DB Demand alarm mask time 1 to demand period Unit minute Demand measurement writing D02
74. S 485 connection MM A A ee Sees Siaa MRT uw oh Law tne ai be de beh coe Li oe tk He OF ie oo rr jir ES Pm Souls Yoroama Station number 02 Station number 03 arbitrary arbitrary Figure 6 2 Example of Connection for Modbus TCP Communication See Also Chapter 7 for information on the D registers IM 77C01E01 10E lt Toc gt lt Ind gt lt 6 Modbus TCP Communication Protocol gt 6 3 6 2 TCP IP Communication Modbus TCP communicates with other devices following the procedure below through the TCP IP socket interface Ethernet PR300 with Ethernet communication function Ss wf TUL tem IC Initial Setup Initial Setup y y socket socket y bind y listen E y Open connection y connect accept p a a y Command send recv y Response AA recv _ send Terminate Vv connection y close close N 2 Figure 6 3 TCP IP Communication A NOTE If no request is received from the higher level device for more than 60 seconds after estab lishing a connection the PR300 will automatically terminate the connection IM 77C01E01 10E lt Toc gt lt Ind gt lt 6 Modbus TCP Communication Protocol gt 6 4 6 3 Network Frame Structure
75. V for the above command Response STX DGBO011 000E 3CIC ETX CR Parameter D Reads maximum current 1 Parameter E Reads maximum current 2 Old style Parameter S Reads maximum current 2 Parameter T Reads maximum current 3 Function Reads the maximum current 1 Reads the maximum current 1 by parameter D the maximum current 2 by parameters E and S and the maximum current 3 by parameter T Command response Number of bytes Command STX DG Station Checksum ETX CR element B number S ADR T There is no command data for data reading Number of bytes 1 2 1 2 8 2 1 1 Response STX DG D Station E O Checksum ETX CR element E number S ADR T Response data is returned as an 8 byte ASCII character string 0 000E 0 to 9 999E 5 Example Reads the maximum current 1 of PR300 with station number 01 indicates the checksum value Command STTX DGD0100 ETX CR Returns a response of the maximum current 1 1000 A 1 000E 3 A for the above command Response STX DGD011 000E 30I0 ETX CR IM 77C01E01 10E lt Toc gt lt Ind gt lt 8 PR201 Original Communication Protocol gt 8 15 Parameter F Reads measured values in batch Function Reads the active energy optional electric energy previous
76. Value Range Less than 100 kW 0 to 99999 kvarh 100 kW to less than 1 MW 0 to 999999 kvarh 1 MW to less than 10 MW 0 to 9999999 kvarh 10 MW or greater 0 to 99999999 kvarh A NOTE The secondary rated power of the PR300 changes depending on its type IM 77C01E01 10E lt Toc gt lt Ind gt lt 3 Procedures for Setting PR300 Functions gt 3 30 3 6 5 Apparent Energy Procedure 1 Write an apparent energy value to the two D registers in the table below The data type is integer 2 After writing that value write 1 to the writing status register D0384 D Register Reference No H No Description Effective Range Apparent energy setpoint 17D D0382 40382 9 lower 2 bytes Refer to the NOTE below Apparent energy setpoint D0383 40383 017E upper 2 bytes i If other than 1 Invalid D0384 40384 017F Apparent energy writing status If 1 Writing is executed Example To set the apparent energy value to 10 000 000 kVAh For station number 01 use PC link communication without checksum and the random write command as shown below If 10 000 000 is converted into a hexadecimal value the value is 0098 9680 Then the order of the upper two bytes and the lower two bytes is reversed 9680 0098 Command STX 01010WRW03D0382 9680 D0383 0098 D0384 0001 ETX CR Response STX 01010K ETX CR A NOTE The set apparent energy value range of the PR300 changes depending on
77. X Station Checksum ETX CR element number ADR There is no command data for data reading Number of bytes 1 2 1 2 14 2 1 1 Response STX DG X Station PR201 Checksum ETX CR element number Note 1 ADR Response data is returned in a 14 byte ASCII character string IM 77C01E01 10E lt Toc gt lt Ind gt lt 8 PR201 Original Communication Protocol gt 8 19 Note 1 Information on model and suffix codes PR201 x 011 20 lt Model gt lt Suffix code gt yx Returns the current phase and wire system 1 Single phase two wire 2 Single phase three wire 3 Three phase three wire 4 Three phase four wire 5 Three phase four wire 2 5e x Returns the current rated input 1 150V 1A 2 150V 5A 3 300V 1A 4 300V 5A 5 600V 1A 6 600V 5A 011 Returns a suffix code 0 Produces neither analog output nor pulse output 1 RS 485 communication 1 Power factor measuring function 20 Returns a suffix code 2 85 to 264 VAC 0 Always 0 e Example Reads the format of PR300 with station number 01 indicates the checksum value Command STX DGX0100 ETX CR Returns the following response for the above command Wire system Single phase three wire Rated input 300V 5A I O Without analog output without pulse output Communication RS 485 communication Measurement Power factor measurement Respon
78. a Tyce PEII Power Monitor of POWERCERT series nS sama Digital indicating controller of Gia IZIS Ha ie 445 a cies i GREEN series Sous Sous J Signal conditioner of JUXTA series meee o omo Station number 02 Station number 03 Station number 04 arbitrary arbitrary arbitrary The PR300 operates as a gateway that changes the Modbus TCP protocol received via network to the Modbus RTU protocol for the serial devices connected to the RS 485 communication interface Therefore the devices supporting the Modbus RTU protocol are required for the devices to be connected A NOTE e f the Ethernet serial gateway function is used set a station number other than 01 for the RS 485 communication devices which are slaves of the PR300 connected to Ethernet e f the Ethernet communication function is used the RS 485 communication interface is used specifically for the Ethernet serial gateway function Therefore it is not pos sible for a higher level device such as a PC to access the PR300 via the RS 485 communication interface IM 77C01E01 10E lt 2 Setup gt Setting for PR300 to perform the Ethernet serial gateway function To use the Ethernet serial gateway function set the parameters of subsection 2 2 2 Con ditions for Ethernet Communication and set a parity PRI in Table 2 3 When the protocol is set to Modbus TCP the parameters of RS 485 other than the parity are fixed and unchangeable Table 2 3 P
79. active energy value to the two D registers in the table below The data type is integer 2 After writing that value write 1 to the writing status register D0381 D Register Reference No H No Description LEAD reactive energy setpoint Effective Range D0377 40377 0178 ower 2 bytes Refer to the NOTE below D0378 40378 0179 E al aa Reactive energy writing status If other than 1 Invalid D0381 40381 017C D0377 to D0380 are validated If 1 Writing is executed Example To set the LEAD reactive energy value to 10 000 000 kVarh For station number 01 use PC link communication without checksum and the random write command as shown below If 10 000 000 is converted into a hexadecimal value the value is 0098 9680 Then the order of the upper two bytes and the lower two bytes is reversed 9680 0098 Command STX 01010WRW03D0377 9680 D0378 0098 D0381 0001 ETX CR Response STX 0101OK ETX CR A NOTE The set LEAD reactive energy value range of the PR300 changes depending on the values of the VT and CT ratios The table below shows the set value range Less than 100 kW Secondary Rated Power x VT Ratio x CT Ratio Possible Set Value Range 0 to 99999 kvarh 100 kW to less than 1 MW 0 to 999999 kvarh 1 MW to less than 10 MW 0 to 9999999 kvarh 10 MW or greater 0 to 99999999 kvarh A NOTE The secondary rated power
80. alog output and pulse output Communication function Ethernet Optional measuring function Demand measurement Phase indication format R S and T indications Response STX 0101OKPR300243336R01020001002200010000E1 ET X CR IM 77C01E01 10E lt Toc gt lt Ind gt lt 4 PC Link Communication Protocol gt 4 1 4 INF7 Reads the maximum value of CPU Function This function code refurns the maximum value of CPU of a station in PC link communica tion e For the format of response in the event of failure see subsection 4 1 2 Command Response for normal operation prc 1 2 2 3 1 2 1 4 Command STX Station 01 0 INF 7 Checksum ETX CR element number ST NO Alona 2 2 2 1 2 11 Response STX Station 01 OK CPU Checksum ETX CR element number maximum ST NO value Note1 Note 1 The maximum value of CPU for power and energy meter is 1 Example Read the maximum value of CPU number of the PR300 at station number 01 Command STX 01010INF706 ETX CR The data 1 will be returned in response to the command above Response STX 01010K18D ETX CR IM 77C01E01 10E lt Toc gt lt Ind gt lt 4 PC Link Communication Protocol gt 4 1 5 4 3 Communication with Higher level Devices Higher level devices are those capable of using the PC link communication protocol 4 3 1 Communication with FA M3 UT Link Module Communication with FA M3 is achi
81. ample Program ccccssescsesecesseeseesceseeescessoeseeseeseaeseuseevonesnaseseaesnesenseaeeas 6 12 6 5 1 Example of BASIC Program for Send and Receive s 6 12 7 Functions and Usage of D Registers 7 1 Overview Of D Registers ccccecceseeesseeeesneeeeeeeeseeeseseeenseeeeeeeeeseaeseseenenseeeees 7 1 7 2 Configuration Of D Registers ccsscccecceeseceseeeeseeeeeseeeeeeeeeeeeeseneeeenseeeeeeeeneas 7 1 7 3 Interpretation of D Register Map Table csssescseeeseseeeeseseeeseseeeeeseenens 7 1 7 4 D Register Map cccsseccccceseeeceeensneeeeensneeeeeensneeeeeensneeeeensaneeseenaneneseensnaeseeensnee 7 2 8 PR201 Original Communication Protocol 8 1 OV OI VIOW ET r 8 1 8 2 Communication Specifications ccccscceceeesseeceseeeeeeeeeeseesseesesneenseeeeeeeees 8 1 8 3 Command Response Format s ccsssccsseeeeeeneeeeeeeeseaeseseeeeneeeeseeesesnaeseseeeneeees 8 2 8 4 Listof COMMAN GS sussies naana inasa aeaaeae aaaea aaa aai 8 3 8 5 Command Details isiin soian aiae aasia aaa 8 5 Appendix Table of ASCII Codes Alphanumeric Codes Revision Information IM 77C01E01 10E lt Toc gt lt Ind gt Communications Overview 1 1 1 1 2 lt 1 Communications Overview gt 1 1 RS 485 Communication Specifications Protocols available for RS 485 communication interfaces include the PC link com munication protocol and the Modbus communication protocol Table 1 1 RS 485 Communication Specification
82. and current values active power voltage 1 voltage 2 voltage 3 current 1 current 2 current 3 and power factor Command response Number of bytes 2 1 2 2 1 1 Command STX DG F Station Checksum ETX CR element number ADR There is no command data for data reading Number of bytes 1 2 1 2 8 5 5 9 Response STX DG F Station E O ddddd ddddd E O element number Active energy Previous value Current value Active power ADR of optional of optional electric energy electric energy Response data is returned as an 81 byte ASCII character string Continued i E O i E O E O i E O i E O i E O Voltage 1 Voltage 2 Voltage 3 Current 1 Current 2 Current 3 Example Reads the measured values of PR300 with station number 01 in batch I indicates the checksum value Command STX DGFO100 ETXI CR Returns the following response for the above command Response STX DGFO01 10000E 31000010000 1 000E 31 000E 31 000E 31 000E 3 1 2 3 4 5 6 7 1 000E 31 000E 31 000E 3G0 800LID ETX CR 8 9 10 11
83. ant D registers Description D0011 to D0014 Effective Range 0 Stop 1 Start Initial value of optional integration start stop 0 stop A NOTE 3 36 Optional integration start stop can also be controlled by digital input Once digital input is performed it is the only means for such control Control via communication is no longer possible until the power is turned off or remote reset is executed see subsection 3 7 1 However for the PR300 with demand measuring function digital input is used to release the demand alarm In this case optional integration start stop cannot be used Control via communication START command Perform integration for this duration A STOP command r l Time Digital input turned on Control by digital input Digital input turned on Digital input turned off No response to S Data update digital input requests Perform integration for this duration A Digital input turned off r Y j Time START STOP S Data update command command a an No response to requests Example To execute optional integration start stop via communication For station number 01 use PC link communication without checksum and the random write command as shown below Command STX 01010WRW01D0302 0001 ETX CR Response STX 0101OK ETX CR IM 77C01E01 10E lt Toc gt lt Ind gt lt 3 Procedures for Setting PR300 Functions gt 3 37 3 8
84. ant networks 10BASE T 100BASE TX Generally the Modbus TCP protocol communicates through port 502 In addition the PR300 operates as Ethernet serial gateway A higher level device can exchange data with other serial communication devices using the Modbus TCP protocol via the PR300 Higher level devices PC etc Va iva Application Layer Modbus TCP Transport Layer TCP Network Layer IP Data link Layer ETHERNET Physical Layer 10BASE T 100BASE TX Figure 6 1 Network Layer IM 77C01E01 10E lt Toc gt lt Ind gt lt 6 Modbus TCP Communication Protocol gt 6 2 Example y Higher level device IP address 192 168 1 1 arbitrary Maximum distance between hub and module 100 m Maximum number of hubs connectable in cascade configuration HUB 4 levels for 10BASE T 2 levels for 1OOBASE TX OOOO foo LAN connection C JA En Srm tian Eoaea yee in a e a aw PR300 as te 1315 mE Lee ae Ee fm UCR Te l D Pe Ethernet serial gateway function kaea kaea oaao Town Station number 01 fixed Station number 01 fixed Station number 01 fixed Station number 01 fixed IP address 192 168 1 2 IP address 192 168 1 3 IP address 192 168 1 4 IP address 192 168 1 5 arbitrary arbitrary arbitrary arbitrary R
85. arameters of PR300 to Perform the Ethernet Serial Gateway Function 2 11 Slave PR300 Parameter Name Menu Parameter Symbol Setting Range initial Station number aI m 01 fixed 01 ST NO Lask Baud rate or re 9600 bps fixed 9600 B RT mayo None NONE Parity HHG ors Even EVEN NONE a PRI RS 485 E a Odd ODD Stop bit communication SE H 1 fixed 4 STP JM Data length oer 8 fixed 8 DLN The station number of any slave PR300 device for RS 485 communication must be a different number other than 01 The communication conditions for any slave PR300 device for RS 485 communication other than the station number must conform to those in Table 2 3 Table 2 4 Parameters of Slave PR300 Parameter Name Menu Parameter Symbol Setting Range Nad Sf eee Station number tk tht 02to 99 01 ST NO l 2400 bps Baud rate a aa aa m 9600 bps 9600 B RT 19200 bps UMC mLa None NONE Parity I IAT Even EVEN NONE RS 485 PRI Odd ODD communication Ceo f Stop bit pr E E 1 STP 2 JM 7 Data length Lieve 8 DLN 8 When using the VJET Ethernet RS 485 converter as an Ethernet serial gateway function the communication conditions of any slave PR300 must conform to those of the VJET at a higher level The initial value of the VJET parity is EVEN IM 77C01E01 10E lt Toc gt lt Ind gt lt 2 Setup gt
86. basis 4 11 WRM Monitors the D registers on a word by word basis ceeee 4 12 INF6 Reads the model suffix codes and version information 4 13 INF7 Reads the maximum value of CPU eessen 4 14 4 3 Communication with Higher level Devices ssssssnsssussunnnnnnunnnnnnennnnnnnnnnnnna 4 15 4 3 1 Communication with FA M3 UT Link Module sceeeeeeee 4 15 IM 77C01E01 10E lt Int gt lt Ind gt lt Rev gt 4 4 Sample Program ccsseccceseeesseeeeseeeeneneesseaeenseeeeneneessaesaseneeeneneessaesaseeeensneeess 4 17 4 4 1 Example of BASIC Program for Send and Receive s es 4 17 5 Modbus RTU and ASCII Communication Protocols 5 1 OV ON VIOW ea seedetde thence ten ecenide steer ceste E 5 1 5 1 1 Configuration of Message cceecceceteeeeeeeseneeteneeeeeeeeeeeeseaeeteneeeeeees 5 3 5 1 2 Specifying D REGIStENS seecicsec reserves cevevivesatacactierestieeetaandit aa aeae 5 4 5 1 3 Checking EMMONS sae cees cassis ened ors ubadas ve saces van cep uecxeveeavexaienguzcevsinereestereceias 5 4 5 1 4 Configuration Of RESPONSE c ceeececeeeeeeeeeeeneeteneeeeeeeteeeeeteeetsaeeseaees 5 7 5 1 5 Specifying Broadcast vvisiccct esi cd hci civ aaraa E 5 9 5 2 Message and Response ccessecceeeeeeeeeeeeeeeeeenseeeeeenseeeeenseeeeeenseeeeeenseeeenenss 5 10 03 Reads data from multiple D registers cc eeeeeeeeeeeeeeeeeeneeeees 5 11 06 Writes data into D register eee e
87. byte value TextBinary change For iCount 1 To 12 strCher amp H Mid strSendData 2 iCount 1 2 Fetch 2 characters and change them into hexadecimal notation binChrs iCount 1 CByte Val strCher Change them into numerical values Next iCount Send sending data Winsock1 SendData binChrs Send command End Sub Private Sub cmdSend2 Procedure to send command to PR300 connected to RS 485 line with PR300 as gateway Variable declaration Dim iCount As Integer Dim strCher As String Set properties of Winsock control Winsock1 Protocol sckTCPProtocol TCP protocol Winsock1 RemoteHost 192 168 1 1 IP address of PR300 as gateway Winsock1 RemotePort 502 Port of Modbus TCP to be used Request TCP connection of PR300 Winsock1 Connect Request TCP connection Do Until Winsockl State sckConnected Wait for the completion of connection iFlag DoEvents Loop IM 77C01E01 10E lt Toc gt lt Ind gt lt 6 Modbus TCP Communication Protocol gt 6 1 5 Create sending data strSendData 123400000006020300000002 Sending command character string L k Number of D registers 0002 2 ________D register start number 0000 D0001 1 Function code 03 Reads data from multiple D registers 3 Station number of PR300 02 Station 02 Number of sending data bytes after station number 0006 6 bytes
88. c energy previous value and 10000 Wh as optional electric energy current value for the above command Response STX DG201100001000000 ETX CR Parameter 3 Instantaneous power Function Reads the active power Command response Number of bytes 2 1 2 2 1 1 Command STX DG 3 Station Checksum ETX CR element number ADR There is no command data for data reading Number of bytes Response STX DG 3 Station E O Checksum ETX CR element number ADR Response data is returned as a 9 byte ASCII character string t0 000E 0 to 9 999E 6 IM 77C01E01 10E lt Toc gt lt Ind gt lt 8 PR201 Original Communication Protocol gt 8 8 Example Reads the active power of PR300 with station number 01 indicates the checksum value Command STX DG30100 ETX CR Returns a response of active power 1000 W 1 000E 3 W for the above command Response STX DG301 1 000E 301D ETX CR Parameter 4 Instantaneous voltage 1 Parameter H Instantaneous voltage 2 Parameter J Instantaneous voltage 3 Function Reads voltage 1 by parameter 4 voltage 2 by parameter H and voltage 3 by parameter J Command response Number of bytes 1 2 1 2 2 1 1 Command STX DG 4 Station Checksum ETX CR element H nu
89. cation see Chapter 7 Functions and Usage of D Registers Note It is recommended to use the Ethernet network as a dedicated one for the PR300 IM 77C01E01 10E lt Toc gt lt Ind gt lt 2 Setup gt 2 5 VJET Ethernet RS 485 converter as an Ethernet serial gateway function Example Higher level device IP address 192 168 1 1 arbitrary Ethernet Station number 01 fixed VJET IP address 192 168 1 2 arbitrary Ethernet RS 485 converter PSS0o mem mmo mma we Aa eT 1I en e hae te a Zast ast yoroawa gt YOROGANA YODA gt Station number 02 arbitrary Station number 03 arbitrary Station number 20 arbitrary The VJET is Yokogawa s converter For details of use of the VJET refer to its user s manual Note It is recommended to use the Ethernet network as a dedicated one for the PR300 The communication conditions of any slave PR300 must conform to those of the VJET at a higher level IM 77C01E01 10E lt Toc gt lt Ind gt lt 2 Setup gt 2 6 2 2 Setting Communication Conditions This section describes the setting parameters for using the communication func tions and the setting ranges For details of setting method refer to the PR300 Power and Energy Meter User s Manual electronic manual 2 2 1 Conditions for RS 485 Communication This subsection describes the setting parameters for using the RS 485 communication function and the sett
90. cksum and the random write command as shown below If 10 0 is converted into a 4 byte floating point value the value is 4120 0000 Command STX 01010WRW03D0221 0000 D0222 4120 D0226 0001 ETX CR Response STX O101OK ETX CR Ay NOTE A demand power alarm point value can be set for the PR300 with demand measuring function IM 77C01E01 10E lt Toc gt lt Ind gt lt 3 Procedures for Setting PR300 Functions gt 3 1 4 3 4 5 Demand Current Alarm Point Procedure 1 Write a demand current alarm point value to the two D registers in the table below The data type is 4 byte floating point 2 After writing that value write 1 to the demand measurement writing status register D0226 D Register Reference No H No Description Effective Range D0223 40223 00DE Demand current alarm point float lower 2 bytes 1 to 1000 Demand current alarm point Unit A D0224 40224 00DF float upper 2 bytes Demand measurement writing If other than 1 Invalid D0226 40226 00E1 status D0218 to D0225 are if 1 Writing is executed validated Initial value of demand current alarm point 100 A Example To set the demand current alarm point to 10 0 A For station number 01 use PC link communication without checksum and the random write command as shown below If 10 0 is converted into a 4 byte floating point value the value is 4120 0000 Command STX 01010WRW03D0223 0000 D0224 4120 D
91. communication without checksum and the random write command as shown below Command STX 01010WRW01D0354 0001 ETX CR Response STX 01010K ETX CR IM 77C01E01 10E lt Toc gt lt Ind gt lt 3 Procedures for Setting PR300 Functions gt 3 34 3 7 6 Reactive Energy Reset Procedure 1 To execute reactive energy reset write data to the D register in the table below The data type is integer D Register Reference No H No Description Effective Range If other than 1 Invalid If 1 Reactive energy reset Reactive energy D0355 pene ore D0005 to D0008 reset Example To execute reactive energy reset For station number 01 use PC link communication without checksum and the random write command as shown below Command STX 01010WRW01D0355 0001 ETX CR Response STX 01010K ETX CR 3 7 7 Apparent Energy Reset Procedure 1 To execute apparent energy reset write data to the D register in the table below The data type is integer D Register Reference No H No Description Effective Range Apparent energy If other than 1 Invalid DO356 20356 0103 D0009 and D0010 reset If 1 Apparent energy reset Example To execute apparent energy reset For station number 01 use PC link communication without checksum and the random write command as shown below Command STX 01010WRW01D0356 0001 ETX CR Response STX 01010K ETX CR
92. cordance with the function code It is expressed in hexadecimal in the message Error Check In RTU mode Carried out by the cyclic redundancy check CRC 16 system In ASCII mode Carried out by the longitudinal redundancy check LRC system End of Message Mark This mark indicates the end of a message Note that only ASCII mode requires CR LF IM 77C01E01 10E lt Toc gt lt Ind gt lt 5 Modbus RTU and ASCII Communication Protocols gt 5 4 5 1 2 Specifying D Registers Specification of D registers using commercially available SCADA or other software and specification of D registers for messages used in a customer created communi cation program are different Take note of this For a customer created communication program specify a value in hexadecimal that is obtained by subtracting 40001 from a reference number Example Specifying D0043 For messages in the customer created communication program specify 002A the hexadecimal number of value 42 obtained by subtracting 40001 from the reference num ber 5 1 3 Checking Errors Modbus communication has two modes i e the ASCII mode which is communication based on ASCII characters and the RTU mode which is binary code communication These modes use different error checking methods E ASCII Mode In the ASCII mode errors are checked by means of an LRC longitudinal redundancy check The LRC value is the two s complement of the sum obtained by adding up da
93. dure 1 To set the port number write data to the D register in the table below The data type is integer 2 After writing that value write 1 to the Ethernet writing status register D0294 D Register Reference No H No Description Effective Range D0293 40293 0124 Port number 502 1024 to 65535 Ethernet writing status 1 Invali D0294 40294 0125 D0281 to D0293 are i TE validated i Initial value of port number 502 A NOTE e A port number value can be set for the PR300 with Ethernet communication function e Port number setting is only effective when the protocol is set to Modbus TCP Example To set the port number to 1024 For station number 01 use PC link communication without checksum and the random write command as shown below Command STX O1010WRW02D0293 0400 D0294 0001 ETX CR Response STX 0O101OK ETX CR IM 77C01E01 10E lt Toc gt lt Ind gt lt 3 Procedures for Setting PR300 Functions gt 3 26 3 6 Writing Energy Values 3 6 1 Active Energy Procedure 1 Write an active energy value to the two D registers in the table below The data type is integer 2 After writing that value write 1 to the writing status register D0373 D Register Reference No H No Description Effective Range D0371 40371 0172 Active energy setpoint lower 2 bytes Refer to the NOTE below D0372 40372 0173 Active energy setpoint
94. e float lower 2 bytes 0 000 to 999 999 990 A x R D0128 40128 007F A2 MAX H Current 2 maximum value float upper 2 bytes D0129 40129 0080 A3 MAXL Current 3 maximum value float lower 2 bytes 0 000 to 999 999 990 A x R D0130 40130 0081 A3 MAX H Current 3 maximum value float upper 2 bytes D0131 40131 0082 PF MAXL Maximum power factor float lower 2 bytes 0 500 to 1 000 to 0 500 x R D0132 40132 0083 PF MAX H Maximum power factor float upper 2 bytes D0133 40133 0084 PFMINL Minimum power factor float lower 2 bytes 0 500 to 1 000 to 0 500 x R D0134 40134 0085 PF MINH Minimum power factor float upper 2 bytes D0135 40135 0086 Freq MAX L Maximum frequency float lower 2 bytes 45 0 to 65 0 Hz x R D0136 40136 0087 Freq MAX H Maximum frequency float upper 2 bytes D0137 40137 0088 Freq MIN L Minimum frequency float lower 2 bytes 45 0 to 65 0 Hz x R D0138 40138 0089 Freq MIN H Minimum frequency float upper 2 bytes D0139 40139 008A DEMAND W MAXL Maximum demand power float lower 2 bytes 0 0 to 9 999 999 9 W x R D0140 40140 008B DEMAND W MAXH Maximum demand power float upper 2 bytes Demand current 1 maximum value D0141 40141 008C DEMAND A1 MAX L float lower 2 bytes 0 000 to 999 999 990 A x R Demand current 1 maximum value D0142 40142 008D DEMAND A1 MAX H float upper 2 bytes Demand current 2 maximum value D0143 40143 008E DEMAND A2 MAX L float
95. e write 1 to the RS 485 writing status register D0277 D Register Reference No H No Description Effective Range 0 2400 bps D0272 40272 010F Baud rate 1 9600 bps 2 19200 bps RS 485 writing status i D0277 40277 0114 D0271 to D0276 are It omer man invalid validated If 1 Writing is executed Initial value of baud rate 1 9600 bps A NOTE When Modbus TCP is selected for the protocol the baud rate is fixed and unchangeable at 9600 bps Example To set the baud rate to 2 19200 bps For station number 01 use PC link communication without checksum and the random write command as shown below Command STX 01010WRW02D0272 0002 D0277 0001 ETX CR Response STX O0101OK ETX CR IM 77C01E01 10E lt Toc gt lt Ind gt lt 3 Procedures for Setting PR300 Functions gt 3 18 3 5 3 Parity Procedure 1 To set the parity write data to the D register in the table below The data type is integer 2 After writing that value write 1 to the RS 485 writing status register D0277 D Register Reference No H No Description Effective Range 0 NONE 1 EVEN D0273 40273 0110 Parity 2 ODD RS 485 writing status 1 Invali D0277 40277 0114 D0271 to D0276 are g Ainai ene validated Initial value of parity 0 NONE Example To set the parity to 1 EVEN For station number 01 use PC link communication without checksum and the random w
96. e above command Response STX DG1011000000 ETX CR A NOTE Display ranges of active energy vary depending on the values of the VT and CT ratios See the following table for display range details Secondary rated power x VT ratio x CT ratio Internal data PR201 original communication display range 100 kW or less 99999 kWh 100 kW or more 1 MW or less 999999 kWh 99999 kWh 1 MW or more 10 MW or less 9999999 kWh 10 MW or more 99999999 kWh A NOTE The secondary rated power of the PR300 changes depending on its model and suffix codes IM 77C01E01 10E lt Toc gt lt Ind gt lt 8 PR201 Original Communication Protocol gt 8 7 Parameter 2 Reads optional electric energy Function Reads the previous value and current value of optional electric energy Command response Number of bytes 2 1 2 2 1 1 Command STX DG 2 Station Checksum ETX CR element number ADR There is no command data for data reading Number Response STX DG 2 Station ddddd ddddd Checksum ETX CR element number Previous Current ADR value value Response data is returned as a 5 byte ASCII character string 00000 to 99999 Example indicates the Reads the optional electric energy of PR300 with station number 01 checksum value Command STX DG20100 ETX CR Returns 10000 Wh as optional electri
97. e reading reverse the order of the upper and lower words VT ratio 4 byte floating point hex data 0000 4120 reversed Hex 4120 0000 Decimal 10 CT ratio 4 byte floating point hex data 0000 4120 reversed Hex 4120 0000 Decimal 10 IM 77C01E01 10E lt Toc gt lt Ind gt lt 4 PC Link Communication Protocol gt 4 9 WRR Reads D registers on a word by word basis in random order Function This function code reads the statuses of the individual registers on a word by word basis specified in a random order by the specified number of words e The number of words to be read at a time is 1 to 32 e For the format of response in the event of failure see subsection 4 1 2 e The command shown below includes the checksum function When performing communication without the checksum do not include the 2 byte checksum element in the command Command Response for normal operation or Byes 1 2 2 1 3 2 5 1 5 1 Command STX Station 01 O WRR Number Register Comma Register Comma element number of words number or number or ST NO n 1 space 2 space Command continued 5 2 1 1 Register Checksum ETX CR number n Number of Bytes 1 2 2 2 4 4 ong 4 2 1 I Response STX at 01 OK dddd1 dddd2 pas ddddn Checksum ETX CR element ST NO The response is returned in a 4 digit character string 0000 to FF
98. ee eeceeeeeeeeeeeteeeeeeeeenaeeeeeeeeee 5 12 08 Performs loop Back toSt anssen 5 13 16 Writes data into multiple D registers 0 0 00 eceeeeeeeeeeneeeeeeeeeeeaees 5 14 6 Modbus TCP Communication Protocol 6 1 OVO VOW iste ccc wc det ee secd es seeeie se E E 6 1 6 2 TCP IP COMMUNICATION sises saseccstecnetedstcie cs Weseene debacle ctsstsbeus dented evened ctacuse 6 3 6 3 Network Frame Structure cccccccescesseeeeeeeeeeeeeeseeeseseeeeneneeseeeeeseaeseseeeenseeeeeas 6 4 6 3 1 MBAP Header Structure cccccceeeceeeeeeeseneeeeneeseneeeeeaeeseeeeeneeeeeaeens 6 4 6 3 2 PDU SUUCtUNS ssa ete dee bec trksevcesticcasena re dagenscecdestnndsadeessceedenendeiztemacentse 6 4 6 4 Communication with Higher level Devices ccsecesceeeseeeeseeeeeeeeeeeeeeees 6 5 6 4 1 List Of FUNCtION Codes 0 0 ceccceeeeeeeeeeeeeeeeceeeeteeeeeeeeeseaeeseaeeeteaeeteaeeee 6 5 6 4 2 Specifying D REGISTENS kisiera npinins tiesai eda ea 6 5 6 4 3 Request and Response s ccceseeceeeesenceeeeeeeeeseseeeeeenseneeeenseneees 6 6 03 Reads data from multiple D registers essssesessrirresrsrrinrreserrrnnnnses 6 6 06 Writes data into D register ussciisiniiiirissiniianrinsiusnsnnianninaas 6 7 08 Performs loop back teSt ccceceeeeeeeneeeeeeeeenneeeeeeeeenaeeeeeeeeaeeeeeeene 6 8 16 Writes data into multiple D registers 0 0 0 eeeeeeeeeeeteeeeeeeeeeeneeees 6 9 6 4 4 Response Error Codes ii icsvcescecetctvessnsnsavi sorada neeaaea 6 11 6 5 S
99. ee subsection 3 6 1 x Ww D0372 40372 0173 kWh SET H Active energy setpoint uint 32 upper 2 bytes If other than 1 Invalid D0373 40373 0174 kWh STS Active energy writing status If 1 The values of D0371 and D0372 x w are written as the integrated values Regenerative energy setpoint D0374 40374 0175 RkWhL uint 32 lower 2 bytes a See subsection 3 6 2 x WwW Regenerative energy setpoint D0375 40375 0176 RkWh H uint 32 upper 2 bytes If other than 1 Invalid D0376 40376 0177 RkWh STS Regenerative energy writing status If 1 The values of D0374 and D0375 x Ww are written as the integrated values D0377 40377 0178 Lead kVarh SET L LEAD reactive energy setpoint uint 32 lower 2 bytes gt See subsection 3 6 3 x Ww D0378 40378 0179 Lead kVarh SET H LEAD reactive energy setpoint uint 32 upper 2 bytes D0379 40379 017A Lag kVarh SET L LAG reactive energy setpoint uint 32 lower 2 bytes See subsection 3 6 4 x w D0380 40380 017B Lag kVarh SET H LAG reactive energy setpoint uint 32 upper 2 bytes If other than 1 Invalid D0381 40381 017C kVarh STS Reactive energy writing status If 1 The values of D0377 to D0380 x Ww are written as the integrated values D0382 40382 017D kVAh SET L Apparent energy setpoint uint 32 lower 2 bytes N See subsection 3 6 5 x Ww D0383 40383 017E kVAh SET H Apparent energy setpoint uint 32 upper 2 bytes
100. eeesseesseesseeesneeseeessnessaeecae eee eneeseneseeeeeeaeeeeneees 3 5 3 2 1 Selection of Measurement Item for Pulse Output c eeeeeeeees 3 5 3 2 2 PULE UNika eaessace cazsledcebaxshece tay aon etaauiete cated 3 6 3 2 3 ON Pulse Width 2 00 cccceeceeeeceeeeeneeeceeeeeeeeeceeeseaeeseaeeseaeeessaeeeseeeseaees 3 7 3 3 Setting Analog Output cccceeceeneeeseeeesneeenseeeeeeeesesneeenseeeseneeeseaeseseeeenseeeneas 3 8 3 3 1 Selection of Measurement Item for Analog Output ceeeeeee 3 8 3 3 2 Upper Lower Limits Of Scaling 0 ecceeeeeeeeeeeeeeeeteneeteeeeeneeseneeeeeeeees 3 9 3 4 Demand Setting ssiri uana aa EE eaaa 3 10 3 4 1 Demand Power CuUrnemt siropu ikenta iae EERE 3 10 3 4 2 Demand Period sosissnsissiria rear AASS 3 11 3 4 3 Demand Alarm Mask Time ccceeeeeeeeeeeeeeeeeeeeeeeeneeeeeeeaeeeseeneeees 3 12 3 4 4 Demand Power Alarm Point ccccceeeeecteeeeeeeeeeeeeeeeeeneeeeseneeeeeeaees 3 13 IM 77C01E01 10E lt Int gt lt Ind gt lt Rev gt Toc 2 3 4 5 Demand Current Alarm Point 0 ccceccsceceseeeeeeeeteeeeneeeeeaeeseneeseaeees 3 14 3 4 6 Demand Alarm Release Function ceeeeceeeeeeereeeeneeeeeeneeeeeaeees 3 15 3 5 Communication Setting ccccecceceeeceseeeeeeeeeeeeeeeseeeeneeeeeeeeeeseeseseeeenseeenennes 3 16 3 5 1 PrOlOCOl iedeed sic cnseenaedeucts denera e anaa Ea i aaa a E Gaerin oie 3 16 3 5 2 Baud RAIG osese E ts tacued sonst ibettavtens foaneteh ent ieie e
101. egister the unit of which is two words When 2 word data need to be written or read writing or reading operations must be performed for the 2 word data at the same time e Even if data written to the D register is out of the effective range a normal response is returned IM 77C01E01 10E lt 5 Modbus RTU and ASCII Communication Protocols gt Configuration of Message 5 3 Messages sent from the higher level device to the PR300 consist of the following elements Element Start of Station Function Data Error Check End of Message Mark Number Code Message Mark ST NO Number of bytes None 1 1 2n 2 None in RTU mode variable Number of bytes 1 2 2 4n 2 2 in ASCII mode variable 1 2 3 4 5 6 1 Start of Message Mark This mark indicates the start of amessage Note that only ASCII mode requires a colon Station Number 01 to 99 Station numbers are used by the higher level device to identify the PR300 at the communication destination These numbers are identification numbers specific to individual PR300 which are expressed in hexadecimal in the message 00 Broadcasting mode See subsection 5 1 5 Specifying Broadcast Function Code See section 5 2 Message and Response This element specifies a command function code from the higher level device Data This element specifies D register numbers the number of D registers parameter values or others in ac
102. elow The data type is 4 byte floating point 2 After writing that value write 1 to the setup change status register D0207 D Register Reference No H No Description Effective Range D0205 40205 00CC Integrated low cut power float lower 2 bytes 0 05 to 20 00 z Unit D0206 40206 00cD Integrated low cut power float upper 2 bytes Setup change status If other than 1 Invalid Do297 40207 00CE D0201 to D0206 are validated If 1 Writing is executed Initial value of integrated low cut power 0 05 4 byte floating point data 3D4CCCCD Example To set the integrated low cut power value to 10 0 For station number 01 use PC link communication without checksum and the random write command as shown below If 10 0 is converted into a 4 byte floating point value the value is 4120 0000 Command STX 01010WRW03D0205 0000 D0206 4120 D0207 0001 ETX CR Response STX 01010K ETX CR IM 77C01E01 10E lt Toc gt lt Ind gt lt 3 Procedures for Setting PR300 Functions gt 3 5 3 2 Setting Pulse Output 3 2 1 Selection of Measurement Item for Pulse Output Procedure 1 Write a measurement item for pulse output value to the D register in the table below The data type is integer 2 After writing that value write 1 to the pulse output writing status register D0211 D Register Reference No H No Description Effective Range 0 Active energy D0208 40208 0
103. er 01 is to be monitored This command simply specifies the registers The register numbers for active power are D0021 and D0022 Command STX O1010WRS02D0021 DOO228B ETX CR OK will be returned in response to the command above Response STX 0101OK5C ETX CR IM 77C01E01 10E lt Toc gt lt Ind gt lt 4 PC Link Communication Protocol gt 4 1 2 WRM Monitors the D registers on a word by word basis Function This function code reads the information of the registers that have been specified in ad vance by the WRS command e Before executing this command the WRS command must always be executed to specify which registers are to be monitored If no register has been specified error code 06 is returned e For the format of response in the event of failure see subsection 4 1 2 e The command shown below includes the checksum function When performing communication without the checksum do not include the 2 byte checksum element in the command Command Response for normal operation Number of Bytes d STX Station 01 number ST NO 2 3 2 1 1 QO WRM Checksum ETX CR Comman element or Bites 1 2 2 2 4 4 ez 4 2 1 4 Response STX Station 01 OK ddadt ddad2 dddan Checksum ETX CR number element ST NO The response is returned in a 4 digit character string 0000 to FFFF in hexadec
104. er 56 S57 58 59 60 61 62 63 Result D201 12C0 1380 D341 1100 D1C1 D081 1040 Number 64 65 66 67 68 69 70 71 Result F001 30C0 3180 F141 3300 F3C1 F281 3240 Number 72 73 74 75 76 Ai 78 79 Result 3600 F6C1 F781 3740 F501 35C0 3480 F441 Number 80 81 82 83 84 85 86 87 Result 3C00 FCC1 FD81 3D40 FFO1 3FCO 3E80 FE41 Number 88 89 90 91 92 93 94 95 Result FA01 3ACO 3B80 FB41 3900 F9C1 F881 3840 Number 96 97 98 99 100 101 102 103 Result 2800 E8C1 E981 2940 EBO1 2BCO 2A80 EA41 Number 104 105 106 107 108 109 110 111 Result EE01 2ECO 2F80 EF41 2D00 EDC1 EC81 2C40 Number 112 113 114 115 116 117 118 119 Result E401 24CO 2580 E541 2700 E7C1 E681 2640 Number 120 121 122 123 124 125 126 127 Result 2200 E2C1 E381 2340 E101 21C0 2080 E041 Number 128 129 130 131 132 133 134 135 Result A001 60CO 6180 A141 6300 A3C1 A281 6240 Number 136 137 138 139 140 141 142 143 Result 6600 A6C1 A781 6740 A501 65C0 6480 A441 Number 144 145 146 147 148 149 150 151 Result 6COO ACC1 AD81 6D40 AFO1 6FCO 6E80 AE41 Number 152 158 154 155 156 157 158 159 Result AAO1 6ACO 6B80 AB41 6900 A9C1 A881 6840 Number 160 161 162 163 164 165 166 167 Result 7800 B8C1 B981 7940 BB01 7BCO 7A80 BA41 Number 168 169 170 A 172 S 174 175 Result BEO1 7ECO 7F80 BF41 7D00 BDC1 BC81 7C40 Number 176 177 178 179 180 181 182 183 R
105. esult B401 74C0 7580 B541 7700 B7C1 B681 7640 Number 184 185 186 187 188 189 190 191 Result 7200 B2C1 B381 7340 B101 71C0 7080 B041 Number 192 193 194 195 196 197 198 199 Result 5000 90C1 9181 5140 9301 53C0 5280 9241 Number 200 201 202 203 204 205 206 207 Result 9601 56CO 5780 9741 5500 95C1 9481 5440 Number 208 209 210 211 212 213 214 215 Result 9CO1 5CCO 5D80 9D41 5F00 9FC1 9E81 5E40 Number 216 217 218 219 220 221 222 223 Result 5A00 9AC1 9B81 5B40 9901 59C0 5880 9841 Number 224 225 226 227 228 229 230 231 Result 8801 48C0 4980 8941 4B00 8BC1 8A81 4A40 Number 232 233 234 235 236 237 238 239 Result 4E00 8EC1 8F81 4F40 8D01 4DCO 4C80 8C41 Number 240 241 242 243 244 245 246 247 Result 4400 84C1 8581 4540 8701 47CO 4680 8641 Number 248 249 250 251 252 253 254 255 Result 8201 42C0 4380 8341 4100 81C1 8081 4040 IM 77C01E01 10E lt Toc gt lt Ind gt lt 5 Modbus RTU and ASCII Communication Protocols gt 5 7 5 1 4 Configuration of Response The PR300 receives a command message from the higher level device If the received command message is found to be normal and directed at the station number of the PR300 itself the PR300 concludes the content of the message to be normal Thus the PR300 enters the phase of executing message processing deciphers the content of the command message and processes with the message The PR300 does no
106. eved by simply connecting the PR300 to a UT link module using the PC link communication protocol Set the communication condi tions of the PR300 identical to those of the UT link module PLC FA M3 Model of UT link module F3LC51 2N RS 485 communication Maximum communication distance 1200 m Maximum number of slave stations to be connected 31 JA C JA TT ao Frame ia come HG Re ns FETHA m mee y H FEDHA if FE JUG i EEA A ame FT a ITNA eT Ge i Jexleafesies SOAS Figure 4 3 Communication with UT Link Module The UT link module function has the following two modes which allow you to communicate with FA M3 without being aware of it For more information see the optionally available user s manual of UT Link Module IM 34M6H25 01E 1 Automatic mode This mode enables the instruments fixed devices those that cannot be specified by the user to be constantly refreshed by reading from them The fixed devices are D0001 to D0022 and the read areas cannot be written to 2 Manual mode This mode enables the instrument s devices those that can be specified by the user to be constantly refreshed by reading from and or writing to them See Also The devices mentioned here are D registers For more information on D registers see Chapter 7 IM 77C01E01 10E lt 4 PC Link Communication Protocol gt FA M3 s UT Link
107. function When performing communication without the checksum do not include the 2 byte checksum element in the command Command Response for normal operation Number 1 2 2 1 of Bytes 3 2 5 1 4 1 Command STX Station 01 0 WRW Number Register Comma dddd1 Comma element number of words number or or ST NO n 1 space space Command continued 5 1 4 ne 5 1 4 2 1 1 Register Comma dddd2 a Register Comma ddddn Checksum ETX CR number or number or space 2 space n Write information is specified in a 4 digit character string 0000 to FFFF in hexadecimal ddddn repetition of register numbers and write information of the specified number of words ddddn character string in hexadecimal n 1 to 32 words Number of Bytes 2 2 2 2 1 1 Response STX Station 01 OK Checksum ETX CR element number ST NO Example Write 1 into the remote reset register symbol RMT RST and active energy reset register symbol kWh RST of the PR300 at station number 01 The register number for remote reset is D0400 The register number for active energy reset is D0353 Command STX 01010WRW02D0400 0001 D0353 000171 ETX CR OK will be returned in response to the command above Response STX O101OK5C ETX CR IM 77C01E01 10E lt Toc gt lt Ind gt lt 4 PC Link Communication Protocol gt 4 1 1 WRS S
108. h F BASIC for PC AT or compatible machines 1 PC AT is the product of IBM Ltd 2 F BASIC is the product of Fujitsu Ltd Example of the Program Created Using F BASIC Version 6 3 Communication Conditions Baud rate 9600bps Parity None Data length 8 bits Stop bit 1 bit Protocol STXS CHRS 2 ETXS CHRS 3 CRS CHRS 13 LFS chr 10 RCVCHRS STOPFLAG 0 SENDS STX 01010WRDDO001 02 ETXS BAUD 0 9600 open COMO F8N1N7 as 1 interval 5 on com 0 gosub RECEIVECHR on interval gosub TIMEOUT print 1 SENDS com 0 on interval on while STOPFLAG 0 waiti wend off close 1 com 0 print gt SENDS print lt RCVCHRS end PC link without checksum Define Define Define Define Initialize receive character string Initialize end flag Create character string for send Set a communication baud rate Open a communication port Set timeout timer Specify interruption processing during receiving Specify interruption processing at timeout Send Permit interruption during receiving Start timer Wait for receive end or timeout Permit interruption during receiving Close the port Display sent character string on screen Display received character string on screen IM 77C01E01 10E lt Toc gt lt Ind gt lt 4 PC Link Communication Protocol gt 4 1 8 Sub
109. he function code entered here is the function code in hex plus 80 in hex The following table summarizes details on the error codes Error Code Meaning Cause 01 Funcation code error Function code does not exist 02 Abnormal D register number D register number out of the range is specified 03 Abnormal number of D registers Number of D registers out of the range is specified The PR300 does not regard it as an error even if there is any unused register among those with consecutive register numbers specified by a readout function rather the PR300 returns a value of 0 in this case The PR300 returns the error code 02 or 03 if the specified consecutive registers are made to fall outside the given range by the number of registers specified even though the D register start number was initially within the range Depend on the function code E Cases when There Are No Responses to Transmitted Messages e Atransmission error overrun framing parity LRC or CRC 16 error is encountered e The station number in the command message is wrong e The interval between data composing a message is longer than 2 seconds e The station number is OO broadcast specification e The receiving buffer has overflowed Note As a measure against the abovementioned problems add a time out process to the communication function or program of the higher level device IM 77C01E01 10E lt 5 Modbus RTU and ASCII Communication Pr
110. he protocol select 1 for the stop bit Data length DLN Set the same data length as for the upper device that is to be connected When Modbus RTU is selected for the protocol select 8 for the data length When PR201 original is selected for the protocol select 8 for the data length IM 77C01E01 10E lt Toc gt lt Ind gt lt 2 Setup gt 2 8 2 2 2 Conditions for Ethernet Communication This subsection describes the setting parameters for using the Ethernet communication function and the setting ranges Table 2 2 Parameters to be Set for Communication Functions Parameter Name Menu Parameter Symbol Setting Range a I HI PC link without checksum LLL I PCLK1 Om uI i i Pikes PC link with checksum PCLK2 aes ee Modbus ASCIl Moke WL Pree MASC Protocol C79 LAAN Sa PCLK2 RS 485 COMM Modbus RTU iM a Communication ore Modbus TCP n Cor M TCP ici reo PR201 original PR201 IP address 1 a4 I 0 to 255 192 IP 1 1 D 1 IP address 2 IT 0 to 255 168 IP 2 1I L l IP address 3 a 0 to 255 1 IP 3 IP address 4 H u 0 to 255 1 IP 4 Ca 4 Subnet mask 1 att I 0 to 255 255 SM 1 ore a Subnet mask 2 IV 0 to 255 255 SM 2 rT Lo Subnet mask 3 am 0 to 255 255 cen SM 3 Ethernet ied LI Subnet mask 4 Communication r 7 7 0 to 255 0 ae SM 4 Jr Default gateway 1 Co
111. ice capable of PC link commu nication Modbus communication or Ethernet communication you can readily use these internal data items by reading from or writing to the D registers Configuration of D Registers Register No D0001 to D0100 Classification Process data measurement data Electric energy instantaneous value and status Description D0101 to D0200 Process data statistics data Maximum value and minimum value D0201 to D0300 Parameter data Setup conditions such as VT ratio and CT ratio D0301 to D0400 Control data Control of operations such as remote reset Other Prohibited area blank Cannot be used Writing to this area is not guaranteed Interpretation of D Register Map Table This section explains how to read the D Register Map tables in this chapter The numbers listed in the leftmost column are D register numbers 1 below The five digit numbers in the next column are reference numbers used for Modbus communi cation 2 below The numbers in the column third from left are register numbers in hexadecimal used in Modbus communication programs 3 below 3 Hex number for Modbus communication 2 Reference number for Modbus communication 1 D register number O Data Format Abbreviations float single precision floating decimal point uint without sign integer int with sign integer D Reg Ref Regis
112. igned in any order However the maximum number of PR300 to be connected to a single com munication port is 31 When connecting two or more PR300 to a single communication port set a different station number to each Example of connecting a higher level device with four PR300 having station numbers 01 05 10 and 20 Example Maximum communication distance 1200 m Maximum number of slave sations to be connected 31 Co AM gt A il a mew neta rl a eee ame ta a Y aa mow ane oam a ay Somme we CELT we cana cen ek 1375 mm i sa Lot a Te e A w ww hee 75 MW oR fade be beds mf 7345 rem i2345 ma gur Co a we FG te ite ic F455 PAS JI Sia LITEA He ics 45 in OF oti rpa kaeaea a e SOTADA L TS L ooma o J Station number 01 Station number 05 Station number 10 Station number 20 arbitrary arbitrary arbitrary arbitrary Baud rate B RT Set the baud rate identical to that of the higher level device to be connected Otherwise proper communication cannot be achieved Parity PRI Set the handling of parity to be carried out when data is sent or received Set the parity bit state identical to that of the higher level device to be connected When PR201 original is selected for the protocol select NONE for the parity Stop bit STP Set the stop bit identical to that of the higher level device to be connected When PR201 original is selected for t
113. imal ddddn read data of the number of words specified by the WRS command ddddn character string in hexadecimal n 1 to 32 words Example Monitor the active power register symbol W L and W H of the PR300 at station number 01 This command reads the status of the register specified by the WRS command Command STX O1010WRME8 ETX CR The data 2500 will be returned in response to the command above Response STX 01010K4000451CF9 ETX CR Note To use the response data as the reading reverse the order of the upper and lower words Active power floating point hex data 4000 451C reversed Hex 451C 4000 Decimal 2500 IM 77C01E01 10E lt Toc gt lt Ind gt lt 4 PC Link Communication Protocol gt 4 1 3 INF6 Reads the model suffix codes and version information Function This function code reads the model suffix codes and version number of the PR300 e For the format of response in the event of failure see subsection 4 1 2 Command Response for normal operation Number of Bytes 1 2 2 1 3 1 2 1 1 Command STX koi 01 0 INF 6 Checksum ETX CR element ST NO Number of Bytes 1 2 2 2 12 4 4 4 Response STX Station 01 OK Model code Versionand eier Nager lament number PR300 400000 revision Specified for specified a s ST NO Note 1 numbers refreshing refreshing Note
114. imum voltage 1 1 000E 3 V 1000 V 9 Minimum voltage 1 1 000E 2 V 100 V 10 Maximum current 1 1 000E 3 A 1000 A Parameter B Reads maximum voltage 1 Parameter C Reads minimum voltage 1 Parameter N Reads maximum voltage 2 Parameter P Reads maximum voltage 3 Parameter Q Reads minimum voltage 2 Parameter R Reads minimum voltage 3 Function Reads the maximum voltage 1 by parameter B the minimum voltage 1 by parameter C the maximum voltage 2 by parameter N the maximum voltage 3 by parameter P the minimum voltage 2 by parameter Q and the minimum voltage 3 by parameter R Command response Number ofbytes 1 2 1 2 2 1 1 Command STX DG B Station Checksum ETX CR element C number N ADR P Q R There is no command data for data reading ai i aa 2 8 2 1 1 Response STX DG B Station i E O Checksum ETX CR element C number N ADR P Q R Response data is returned as an 8 byte ASCII character string 0 000E 0 to 9 999E 6 IM 77C01E01 10E lt Toc gt lt Ind gt lt 8 PR201 Original Communication Protocol gt 8 14 e Example Reads the maximum voltage 1 of PR300 with station number 01 indicates the checksum value Command STX DGBO100 ETX CR Returns a response of the maximum voltage 1 1000 V 1 000E 3
115. ing and response receiving program created with Visual Basic for PC AT or compatible machines 1 PC AT is the product of IBM Ltd 2 Visual BASIC is a registered trademark of Microsoft Corporation in the United States Example Higher level device IP address 192 168 1 1 arbitrary Maximum distance between hub and module 100 m Maximum number of hubs connectable in cascade configuration LAN 4 levels for 1OBASE T connection 2 levels for 1OOBASE TX PR300 as yer Ethernet serial gateway function ales Ton Station number 01 fixed IP address 192 168 1 2 arbitrary RS 485 connection ILI aw fem E eRe BAS uw le see SIIL tee ITIN BLAA mey Station number 02 arbitrary IM 77C01E01 10E lt Toc gt lt Ind gt lt 6 Modbus TCP Communication Protocol gt 6 1 3 Example of the Program Created Using Visual BASIC Version 6 0 In this sample program command sending and response receiving are carried out by the method for connection and sending and SendData method of Winsock control Preparation Since this sample program uses Winsock control it is necessary to assign the Microsoft Winsock Control component Refer to the user s manual of Visual Basic for how to assign the component Sample Program Normal status check error processing and retry processing are omitted for this proce dure The program does not operate by the procedure described in this sec
116. ing is executed x Ww D0281 to D0293 are validated D0295 to D0300 D0301 40301 012C INTEG START STOP Integration start stop 0 Stop 1 Start R W D0302 40302 012D Wh START STOP Optional integration start stop 0 Stop 1 Start 0 x R W D0303 to D0310 D0311 40311 0136 DEMAND START STOP Demand measurement start stop 0 Stop 1 Start 0 x R W A 0 Normal state 1 Alarm state Confirmation and release of D0312 40312 0137 DEMAND ALM STATUS Writing 0 during alarm state clears 0 x R W demand alarm state the alarm D0313 to D0350 If other than 1 Invalid D0351 40351 015E MAX RST Maximum minimum values reset If 1 Maximum minimum values x w are reset D0101 to D0138 If other than 1 Invalid D0352 40352 015F Wh ALL RST Energy value all reset If 1 All energy values are reset x Ww D0001 to D0010 If other than 1 Invalid D0353 40353 0160 kWh RST Active energy reset If 1 Active energy is reset x w D0001 D0002 If other than 1 Invalid D0354 40354 0161 RkWh RST Regenerative energy reset If 1 Regenerative energy is reset x w D0003 D0004 If other than 1 Invalid D0355 40355 0162 kVarh RST Reactive energy reset If 1 Reactive energy is reset x Ww D0005 to D0008 If other than 1 Invalid D0356 40356 0163 kVAh RST Apparent energy reset If 1 Apparent energy is reset x Ww D0009 D0010 D0357 to D0370 D0371 40371 0172 kWh SET L Active energy setpoint uint 32 lower 2 bytes r S
117. ing ranges Table 2 1 Parameters to be Set for Communication Functions Parameter Name Menu Parameter Symbol Setting Range inita Station number HI 111 01 to 99 01 to 31 recommended 01 ST NO Dri iji PC link without checksum EEE PCLK1 orth uo i i LELEL PC link with checksum PCLK2 j Modbus ASCII n R at Protocol LOD a i 7 PCLK2 To 7 CEL COMM Modbus RTU M RTU Modbus TCP A ECP M TCP os 1 igi GL I PR201 original PR201 2400 bps UGC bent P Baud rate Cga re 9600 bps 9600 RS 485 B RT 19200 bps communication Ta None TANE NONE Parity ri Even EnEn y E EVEN NONE PRI ood Odd ODD meg E 1 Stop bit 4 cr 1 STP 2 M 7 Data length 3 Lice 8 DLN 8 l Modbus TCP can be selected for the PR300 with Ethernet communication function only t2 When Modbus RTU is selected for the protocol select 8 for the data length If 7 is selected for the data length communication is not possible 3 When PR201 original is selected for the protocol select NONE for the parity 1 for the stop bit and 8 for the data length IM 77C01E01 10E lt Toc gt lt Ind gt lt 2 Setup gt 2 7 Protocol COMM Set the communication protocol identical to that of the higher level device to be connected Station number ST NO Set the station number of the PR300 itself A station number of 01 to 99 may be ass
118. is case cannot be written into read only or user prohibited D registers IM 77C01E01 10E 5 10 lt Toc gt lt Ind gt lt 5 Modbus RTU and ASCII Communication Protocols gt 5 11 03 Reads data from multiple D registers Function This function code reads the contents of successive D registers by the specified number starting with a specified D registers number e The maximum number of D registers to be read at a time is 64 e For the format of responses in the event of failure see subsection 5 1 4 Message for normal operation Element Start of Station Function Code D Register Number of Message Number 03 Start Number D Registers Mark ST NO Number of bytes in RTU mode None l 1 2 5 Number of bytes in ASCII mode 1 4 4 Message continued Error End of Message Mark Check CR LF 2 None 2 2 Response for normal operation Element Start of Station Function Byte Contents of Message Number Code Count D Register Mark ST NO 03 Number of bytes in RTU mode None 1 1 Number of bytes in ASCII mode i a 2 Response continued Contents of Error End of Message Mark D Register Check CR LF 2 2 None 4 2 2 Example ASCII mode Read a series of four D registers starting with the D0201 VT ratio and CT ratio at station number 11 Message J0B0300C8000426 CR LF
119. ist of the following elements Element STX Station CPU Time to wait Command Data Checksum ETX CR number number for response corresponding ST NO 01 0 to command 1 2 3 4 5 6 7 8 9 1 STX Start of Text This control code indicates the start of a command The ASCII code is 02 in hexadeci mal Station Number 01 to 99 Station numbers are used by the higher level device to identify the PR300 at the communication destination These numbers are identification numbers specific to individual PR300 P1 Broadcasting mode See subsection 4 1 4 Specifying Broad cast CPU number This number is fixed to 01 The ASCII codes are 30 and 31 in hexadecimal Time to Wait for Response This is fixed to 0 The ASCII code is 30 in hexadecimal Command See section 4 2 Command and Response Specify a command to be issued from the higher level device Data Corresponding to Command Specify an internal register D register number of data pieces and others Checksum This is required if the protocol with checksum is selected for the RS 485 communica tion protocol parameter COMM It converts the ASCII codes of texts between the character next to STX and the char acter immediately before the checksum into hexadecimal values and adds them byte by byte It then fetches the single lowermost byte of the added results as the checksum This column is required only for PC link communication
120. ll duplex IM 77C01E01 10E lt Toc gt lt Ind gt lt 2 Setup gt 2 14 2 3 3 Wiring for RS 485 Communication for Ethernet Serial Gateway Function To use the Ethernet serial gateway function connect other RS 485 serial communication device to the RS 485 communication terminals A WARNING To avoid an electric shock be sure to turn off the power supply source to the equipment involved before you start wiring The figure below shows the example of wiring connection for the PR300 with Ethernet communication function If other devices are used for connection the names of communi cation terminals and others may be different from those mentioned in the figure Read the user s manual of each device carefully before wiring Ethernet PR300 PR300 with Ethernet with RS 485 communication function PR300 communication function with RS 485 inal AN an Ll i cable cable Terminator built in 120Q 1 4W Wthen terminating on wiring short circuit terminals 7 and 8 Terminator built in 120Q 1 4W Wthen terminating on wiring short circuit terminals Aand JIS Class D 3 grounding grounding resistance of 1002 or less IM 77C01E01 10E lt Toc gt lt Ind gt lt 3 Procedures for Setting PR300 Functions gt 3 1 3 Procedures for Setting PR300 Functions To set the functions of the PR300 use the protocols described in Chapter 4 PC Link Communication Protocol Chapter
121. lower 2 bytes 0 000 to 999 999 990 A x R Demand current 2 maximum value D0144 40144 008F DEMAND A2 MAX H float upper 2 bytes Demand current 3 maximum value D0145 40145 0090 DEMAND A3 MAX L float lower 2 bytes 0 000 to 999 999 990 A x R Demand current 3 maximum value D0146 40146 0091 DEMAND A3 MAX H float upper 2 bytes D0147 to D0200 D register with a blank cannot be used Writing to this area is not guaranteed IM 77C01E01 10E lt Toc gt lt Ind gt lt 7 Functions and Usage of D Registers gt Parameter Control Data D0201 to D0400 gris Ref No H No Register Symbol Register Name Effective Range Initial Value BackUp R W D0201 40201 00C8 VTL VT ratio float lower 2 bytes 1 to 6000 1 oO R W D0202 40202 00C9 VT H VT ratio float upper 2 bytes D0203 40203 OOCA CTL CT ratio float lower 2 bytes 0 05 to 32000 1 O R W D0204 40204 0OCB CT H CT ratio float upper 2 bytes D0205 40205 00CC LOWCUT L Integrated low cut power float lower 2 bytes 0 05 to 20 00 0 05 O R W D0206 40206 00CD LOWCUT H Integrated low cut power float upper 2 bytes If other than 1 Invalid D0207 40207 OOCE SET STS Setup change status If 1 Writing is executed x Ww D0201 to D0206 are validated 0 Active energy 1 Regenera
122. lues of the VT and CT ratios See the following table for display range details Secondary rated power PR201 original communication Index display x VT ratio x CT ratio Internal data display range range 100 kW or less 99999 kWh 99999 kWh 99999E 3 Wh 100 kW or more 1 MW or less 999999 kWh 999990 kWh 99999E 4 Wh 1 MW or more 10 MW or less 9999999 kWh 9999900 kWh 99999E 5 Wh 10 MW or more 99999999 kWh 99999000 kWh 99999E 6 Wh A NOTE The secondary rated power of the PR300 changes depending on its model and suffix codes IM 77C01E01 10E lt Toc gt lt Ind gt 8 17 lt 8 PR201 Original Communication Protocol gt Parameter M Reads measured values and maximum minimum values in batch Function Reads the active energy optional electric energy previous and current values active power voltage 1 voltage 2 voltage 3 current 1 current 2 current 3 power factor maxi mum voltage 1 minimum voltage 1 maximum current 1 maximum voltage 2 maximum voltage 3 minimum voltage 2 minimum voltage 3 maximum current 2 and maximum current 3 Command response Number ofbytes 1 2 1 2 2 1 1 Command STX DG M Station Checksum ETX CR element number ADR There is no command data for data reading Number ofbyes 1 2 1 2 8 5 5 9 Response STX DG M Station E O ddddd ddddd E O eleme
123. mber J ADR There is no command data for data reading Number 1 of bytes 1 2 1 2 8 2 1 Response STX DG 4 Station E O Checksum ETX CR element H number J ADR Response data is returned as an 8 byte ASCII character string 0 000E 0 to 9 999E 6 Example Reads voltage 1 of PR300 with station number 01 indicates the checksum value Command STX DG401O0 ETXI CR Returns a response of voltage 1 1000 V 1 000E 3 V for the above command Response STX DG4011 000E 3 OO ETX CR IM 77C01E01 10E lt Toc gt lt Ind gt lt 8 PR201 Original Communication Protocol gt 8 9 Parameter 5 Instantaneous current 1 parameter K Instantaneous current 2 Parameter L Instantaneous current 3 Function Reads current 1 by parameter 5 current 2 by parameter K and current 3 by parameter L Command response Number of bytes 2 1 2 2 1 1 Command STX DG 5 Station Checksum ETX CR element K number L ADR There is no command data for data reading Number of bytes 1 2 1 2 8 2 1 1 Response STX DG 5 Station i E O Checksum ETX CR element K number L ADR Response data is returned as an 8 byte ASCII character string 0 000E 0 t
124. mis 3 17 3 5 3 PAY rnau a 3 18 3 5 4 SOP Biao a n ar TE o 3 19 3 5 5 Data Longi essien a S 3 20 3 5 6 Station N MDe Paicen nianon aianei aasan inae EES 3 21 3 5 7 IP Address for Ethernet communication s s s 3 22 3 5 8 Subnet Mask for Ethernet communication n 3 23 3 5 9 Default Gateway for Ethernet communication cceeeee 3 24 3 5 10 Port Number for Ethernet communication c ceeeeeeeeeeeeees 3 25 3 6 Writing Energy Values ccccsecceceseeeeeseeneeseseeneeseseeneeseseenenseseenenseseeneneneeenenes 3 26 3 6 1 Active Energy cccccececeecceeeeeeeeeeeeeceeeeeeeeeseseeaaaeeeeeeseteceeaaaneeeeeeeess 3 26 3 6 2 Regenerative Energy issiecsccciiscccctsseteevetsssecresecticees sactiisesecieee seared 3 27 3 6 3 LEAD Reactive Energy csecccecesenceeeseeeeeseseaeeeseseeeeseesaneeeeeeaees 3 28 3 6 4 LAG Reactive ENGrgy lt sccvecccscesucsdcartasencg sensueceadhsusectenndstevnaeeravet tecanges 3 29 3 6 5 Apparent EMO QW osar 3 30 3 7 Executing Reset Operations s ccceceseceseseeeseeeeeeeeeneeeeseeeeeseaeenseeeneeeeneas 3 31 3 7 1 Remote Rosel cisco conti noite annaia KENA nariiecnauiceaneys 3 31 3 7 2 Maximum Minimum Values Reset cccececeeeeeeeeeeeeneeeeeeeeeneeeeaes 3 32 3 7 3 Energy Value All ReSet iiciin nia 3 32 3 7 4 Active Energy Reset cccccceeseneeeeeeeneeeeseneeeeeseeeeeeeseeeessneeeeenaes 3 33 3 7 5 Regenerative Energy Reset cssecceceseneeceseene
125. n start stop Specify Ref No 40301 for a request using commercially available SCADA or other software Specify H No 0120 for a request using customer created communication program IM 77C01E01 10E lt Toc gt lt Ind gt lt 6 Modbus TCP Communication Protocol gt 6 6 6 4 3 Request and Response 03 Reads data from multiple D registers Function This function code reads the contents of successive D registers by the specified number starting with a specified D registers number e The maximum number of D registers to be read at a time is 64 e For the format of responses in the event of failure see subsection 6 4 4 Request for nomal operation Reading data from n registers Element MBAP Header PDU Number of bytes 2 2 2 1 1 2 2 Command Transaction ID Protocol ID Number of Unit ID Function Register Number of element bytes code start number registers Hex value Arbitrary 0000 0006 01t0 99 03 n Response for normal operation Element MBAP Header PDU Number of bytes 2 2 2 1 1 1 2 2 Command Number of Function Byte Contents of Contents of element Tranesenenii Protocol p Unip oe a register 1 aan register n Hex value Arbitrary 0000 2n 3 011099 03 2n Example Read a series of four D registers starting with D0201 VT ratio and CT ratio at station number 01 Request 000100000006010300C80004 Toe 2 Tr a 2 B 4
126. nce No H No Description Effective Range D0374 40374 0175 Regenerative energy setpoint lower 2 bytes Refer to the NOTE below D0375 40375 0176 Regenerative energy setpoint upper 2 bytes D0376 40376 0177 Regenerative energy writig If other than 1 Invalid status If 1 Writing is executed Example To set the regenerative energy value to 10 000 000 kWh For station number 01 use PC link communication without checksum and the random write command as shown below If 10 000 000 is converted into a hexadecimal value the value is 0098 9680 Then the order of the upper two bytes and the lower two bytes is reversed 9680 0098 Command STX 01010WRW03D0374 9680 D0375 0098 D0376 0001 ETX CR Response STX 01010K ETX CR A NOTE The set regenerative energy value range of the PR300 changes depending on the values of the VT and CT ratios The table below shows the set value range Less than 100 kW 100 kW to less than 1 MW Secondary Rated Power x VT Ratio x CT Ratio 0 to 99999 kWh 0 to 999999 kWh Possible Set Value Range 1 MW to less than 10 MW 0 to 9999999 kWh 10 MW or greater 0 to 99999999 kWh A NOTE The secondary rated power of the PR300 changes depending on its model and suffix codes IM 77C01E01 10E lt Toc gt lt Ind gt lt 3 Procedures for Setting PR300 Functions gt 3 6 3 LEAD Reactive Energy Procedure 3 28 1 Write a LEAD re
127. nd 9 Power factor IM 77C01E01 10E lt Toc gt lt Ind gt lt 3 Procedures for Setting PR300 Functions gt 3 9 3 3 2 Upper Lower Limits of Scaling Procedure 1 Write upper lower limits of scaling value to the four D registers in the table below The data type is 4 byte floating point 2 After writing that value write 1 to the analog output writing status register D0217 D Register Reference No H No Description Effective Range D0213 40213 00D4 Lower limit of scaling float lower 2 bytes 0 0 to 50 0 D0214 40214 00D5 Lower limit of scaling Unit float upper 2 bytes D0215 40215 00D6 Upper limit of scaling float lower 2 bytes 50 0 to 100 0 Upper limit of scaling Unit meee 40216 gopr float upper 2 bytes D0217 40217 00D8 ooo woe i cee P validated Initial value of lower limit of scaling 50 Initial value of upper limit of scaling 100 Example To set the lower limit of scaling to 10 0 For station number 01 use PC link communication without checksum and the random write command as shown below If 10 0 is converted into a 4 byte floating point value the value is 4120 0000 Command STX 01010WRW03D0213 0000 D0214 4120 D0217 0001 ETX CR Response STX 01010K ETX CR A NOTE An upper lower limit of scaling value can be set for the PR300 with analog output e Set an upper lower limit of scaling so that upper limit of scaling
128. ne 0 to 255 0 DG 1 af oo Default gateway 2 DTT 0 to 255 0 DG 2 os eee Default gateway 3 a ee 0 to 255 0 DG 3 JT ou Default gateway 4 cee 1 0 to 255 0 DG 4 a Port number oe a ae 502 1024 to 65535 502 PORT eat CoC Ethernet setting switch a io OFF ON E SW A Modbus TCP can be selected for the PR300 with Ethernet communication function only 2 Ethernet communication menu is displayed when Modbus TCP is selected for the protocol IM 77C01E01 10E lt Toc gt lt Ind gt lt 2 Setup gt 2 9 Protocol COMM Set the protocol to Modbus TCP IP address 1 to 4 IP n n integers from 1 to 4 Set the IP address for the PR300 by the following format 0 to 255 0 to 255 0 to 255 0 to 255 IP address IP 1 IP 2 IP 3 IP 4 Subnet mask 1 to 4 SM n n integers from 1 to 4 Set the subnet mask for the PR300 by the following format 0 to 255 0 to 255 0 to 255 0 to 255 Subnet Mask SM 1 SM 2 7 SM 3 SM 4 Default gateway 1 to 4 DG n n integers from 1 to 4 Set the default gateway for the PR300 by the following format 0 to 255 0 to 255 0 to 255 0 to 255 Default Gateway DG 1 7 DG 2 A DG 3 A NOTE Before performing setup of IP address subnet mask and default gateway consult the administrator for the network to which the PR300 is to be connected DG 4 Port number PORT Set the port number for
129. normal operation Element Start of Message Mark Station Number ST NO Function Code 08 00x 0000 Transmit Data Arbitrary Number of bytes in RTU mode None 1 1 Number of bytes in ASCII mode f 2 2 4 Message continued Error End of Message Mark Check CR LF 2 None 2 2 Response for normal operation Element Start of Station Function Code 00 Same as Message Number 08 0000 Transmit Data Mark ST NO Number of bytes in RTU mode None A 7 2 2 Number of bytes in ASCII mode 1 2 2 A 4 Response continued End of Message Mark CR LF Diagnostic Codes Diagnostic Code Meaning Data 0000 Command message return Arbitrary Example ASCII mode Send data 0000 fixed and transmit data 04D2 arbitrary to the station number 11 to check the connection for communication Message 0B08000004D217 CR LF When the connection is normal the following response same as the command will be returned Response 0B08000004D217 CRI LF IM 77C01E01 10E lt Toc gt lt Ind gt lt 5 Modbus RTU and ASCII Communication Protocols gt 5 14 16 Writes data into multiple D registers Function This function code writes data into successive D registers by the number starting with a specified D registers number e The maximum number of D registers to be written into at a time is 32
130. nt number Active energy Previous value Current value Active power ADR of optional of optional electric energy electric energy Response data is returned as a 153 byte ASCII character string Continued 8 8 8 8 8 8 E O E O i E O E O f E O E O Voltage 1 Voltage 2 Voltage 3 Current 1 Current 2 Current 3 Continued f l E O Maximum voltage 1 Minimum voltage 1 Maximum current 1 Maximum voltage 2 Maximum voltage 3 E O E O E O E O Power factor Continued 8 8 8 8 2 1 1 i E O i E O E O i E O ETX CR Minimum voltage 2 Minimum voltage 3 Maximum current 2 Maximum current 3 Checksum IM 77C01E01 10E lt Toc gt lt Ind gt lt 8 PR201 Original Communication Protocol gt 8 18 Example Reads the measured value and maximum minimum values of PR300 with station number 01 in batch indicates the checksum value
131. nual Document number IM 77C01E01 01E Model PR300 Power and Energy Meter Startup Manual lt Installation gt Document number IM 77C01E01 02E Model PR300 Power and Energy Meter Startup Manual lt Initial Setup Operations gt Document number IM 77C01E01 03E These manuals provide information about the procedure of installation wiring and opera tion E Trademark 1 Allthe brands or names of Yokogawa Electric s products used in this manual are either trademarks or registerd trademarks of Yokogawa Electric Corporation 2 Ethernet is a registered trademark of XEROX Corporation in the United States 3 Company and product names that appear in this manual are trademarks or registered trademarks of their respective holders Media No IM 77C01E01 10E 3rd Edition Feb 15 2007 YK IM 77C01E01 10E All Rights Reserved Copyright 2006 Yokogawa Electric Corporation lt Toc gt lt Ind gt lt Rev gt Il Documentation Conventions E Symbols This manual uses the following symbols Symbols Used in the Main Text A NOTE Draws attention to information that is essential for understanding the operation and or features of the product TIP Gives additional information to complement the present topic See Also Gives reference locations for further information on the topic Symbols Used in Figures and Tables NOTE Draws attention to information that is essential for understanding the features of the product
132. o 9 999E 5 Example Reads current 1 of PR300 with station number 01 indicates the checksum value Command STX DG50100 ETX CR Returns a response of current 1 1000 A 1 000E 3 A for the above command Response STX DG5011 000E 3 OO ETX CR Parameter 6 Instantaneous power factor Function Reads a power factor Command response Number of bytes 1 2 1 2 2 1 1 Command STX DG 6 Station Checksum ETX CR element number ADR There is no command data for data reading Number of bytes 1 2 1 2 6 2 1 1 Response STX DG 6 Station Checksum ETX CR element number ADR Response data is returned as a 6 byte ASCII character string D0 500 to 1 000 to G0 500 IM 77C01E01 10E lt Toc gt lt Ind gt lt 8 PR201 Original Communication Protocol gt 8 10 Example Reads a power factor of PR300 with station number 01 indicates the checksum value Command STX DG601O00 ETX CR Returns a response of power factor GO 8 for the above command Response STX DG601 G0 80000 ETX CR Parameter 7 Starts optional integration Function Starts optional integration Command response Number of bytes 1 2 1 2 2 1 1 Command STX DG 7 Station Checksum ETX CR element number ADR
133. ocol value to the D register in the table below The data type is integer 2 After writing that value write 1 to the RS 485 writing status register D0277 D Register Reference No H No Description Effective Range 0 PC link without checksum 1 PC link D0271 40271 010E Protocol with checksum 2 Modbus ASCII 3 Modbus RTU 4 Modbus TCP 5 PR201 original RS 485 writing status D0277 40277 0114 D0271 to D0276 are validated If other than 1 Invalid If 1 Writing is executed Initial value of protocol 1 PC link with checksum 1 Modbus TCP can be selected for the PR300 with Ethernet communication function only A NOTE When Modbus TCP is selected for the protocol the baud rate the stop bit the data length and the station number are fixed and unchangeable e When PR201 original is selected the baud rate the parity the stop bit and the data length cannot be set via communication Example To set the protocol to 4 Modbus TCP For station number 01 use PC link communication without checksum and the random write command as shown below Command STX 01010WRW02D0271 0004 D0277 0001 ETX CR Response STX 0101OK ETX CR IM 77C01E01 10E lt Toc gt lt Ind gt lt 3 Procedures for Setting PR300 Functions gt 3 5 2 Baud Rate Procedure 3 17 1 Write a baud rate value to the D register in the table below The data type is integer 2 After writing that valu
134. of the PR300 changes depending on its model and suffix codes IM 77C01E01 10E lt Toc gt lt Ind gt lt 3 Procedures for Setting PR300 Functions gt 3 29 3 6 4 LAG Reactive Energy Procedure 1 Write a LAG reactive energy value to the two D registers in the table below The data type is integer 2 After writing that value write 1 to the writing status register D0381 D Register Reference No H No Description Effective Range LAG reactive energy setpoint D0379 40379 017A lonar 2 ewes moa Refer to the NOTE below reactive energy setpoin D0380 40380 017B upper 2 bytes Reactive energy writing status If other than 1 Invalid D0381 40381 017C D0377 to D0380 are validated If 1 Writing is executed Example To set the LAG reactive energy value to 10 000 000 kVarh For station number 01 use PC link communication without checksum and the random write command as shown below If 10 000 000 is converted into a hexadecimal value the value is 0098 9680 Then the order of the upper two bytes and the lower two bytes is reversed 9680 0098 Command STX 01010WRW03D0379 9680 D0380 0098 D0381 0001 ETX CR Response STX 01010K ETX CR A NOTE The set LAG reactive energy value range of the PR300 changes depending on the values of the VT and CT ratios The table below shows the set value range Secondary Rated Power x VT Ratio x CT Ratio Possible Set
135. ol gt 6 8 08 Performs loop back test Function This function code is used to check connection for communication e For the format of response in the event of failure see subsection 6 4 4 e The 0000 shown below marked with an asterisk are fixed e Any value can be selected for transmit data Request for nomal operation Element MBAP Header PDU Number of bytes 2 2 2 1 1 2 2 Command Transaction ID Protocol ID moer oi Unit ID Function 0000 Transmit data element bytes code Hex value Arbitrary 0000 0006 01 to 99 08 0000 Arbitrary Response for normal operation Element MBAP Header PDU Number of bytes 2 1 1 2 2 Command Transaction ID Protocol ID Number or Unit ID Function 0000 Transmit data element bytes code Hex value Arbitrary 0000 0006 01 to 99 08 0000 Arbitrary Example Send 1234 in hex to the PR300 to check the communication connection Request 000100000006010800001234 Te iT T M 2 46 6 1 0001 Arbitrary 2 byte data 2 0000 Protocol ID 0000 fixed 3 0006 Number of bytes 4 01 Unit ID 01 indicating PR300 5 08 Function code 08 6 1234 Transmit data The following response will be returned to the request above Response 00010000000601 0800001234 t ft ttf f O B 8 465 6 1 0001 Arbitrary 2 byte data in the request 2 0000 Protocol ID 0000 fixed
136. or 100BASE TX Ethernet mS LAN connection gt IP address 192 168 1 1 Maximum distance between hub and module 100 m arbitrary Maximum number of hubs connectable in cascade configuration RSIS I RA Onn OH OE cocina ey un Scene aame Lee i me 15 J E tem IT ane IT he Ham IT To ne ia aes ai sg TITE RAs ee 4G ae f EEM pe 1 114 r O97 ARS te hg on a VAh sue Fu ida5 sa ae FER Matri TIES B EEA oog a SE VI Se SoMa S055 a n woma gt wowma gt Station number 01 fixed Station number 01 fixed Station number 01 fixed Station number 01 fixed IP address 192 168 1 2 IP address 192 168 1 3 IP address 192 168 1 4 IP address 192 168 1 5 arbitrary arbitrary arbitrary 7 Communication parameters setting for PR300 Set up the communication function using the front panel keys Subsection 2 2 2 Conditions for Ethernet Communication Connect a higher level device with PR300 Subsection 2 3 2 Wiring for Ethernet Communication Create communication programs for the higher level device to perform communication Chapter 3 Procedures for Setting PR300 Functions For communication protocol see Chapter 6 Modbus TCP Communication Protocol For data storage location see Chapter 7 Function
137. otocols gt 5 9 5 1 5 Specifying Broadcast The corresponding multiple PR300s perform the function to receive and process a com mand in which this station number is specified 1 Specify 00 for the station number in the command to execute it 2 3 This command is applicable for writing only 4 This command works independently of station numbers of slave stations No response is returned from the PR300 when communication is performed using this command r ett f Higher level device Broadcast data No response from slave stations RS 485 communication Maximum communication distance 1200 m Maximum number of slave stations t be connected 31 L E JA C RPRs00 mem wo an an PAOD meN a 200 OB Se Sea tee monem he O mopem eu i ee eee I SLI a I sa ILE pee Se C ee CERERE eae he be oe ee ds SUce fae ier bed BAR ie er ue to A Hig HEEE EE pr FETE me LC ay ves ht 1 LJ fem 0 ese ASMA v woma gt Figure 5 2 Broadcasting Example Write 0001 into the D0400 remote reset using broadcast command Message 0006018F000168 CRI LF 00 broadcast addressing 06 function code 06 018F D register number 400 0001 data 0001 68 error check Numbers in quotation marks are hexadecimal No response is returned to the above message D Reg No
138. out processing The time out time must be set to 1 second or more In addition when a parameter or data causes an error an error response must be returned Command response timing Command O Response re 0 ee 10 ms min IM 77C01E01 10E lt Toc gt lt Ind gt lt 8 PR201 Original Communication Protocol gt 8 2 8 3 Command Response Format Command components Variable 1 byte 2 bytes 1 byte 2 bytes 2 bytes 1 byte 1 byte ength Station STX Command Parameter n miber Data Checksum ETX CR STX Command Parameter Station number Checksum range Start of Text hexadecimal 02 2 byte ASCII code DG or DP 1 byte ASCII code 0 to Z 2 byte ASCII code 01 to 63 Data No data is found at data read out time When a setting value is changed a variable length ASCII code is set size in byte varies depending on the parameter Checksum 2 byte ASCII code 00 to FF This value is obtained by adding the data hex in a checksum range and converting the lower 2 digits of the resulting value ETX End of Text hexadecimal 03 CR Carriage Return hexadecimal 0D Response components Variable 1 byte 2 bytes 1 byte 2 bytes length 2 bytes 1 byte 1 byte STX Response Parameter Sr Data Checksum ETX CR STX Response Parameter Station number Data Checksum ETX CR A NOTE Checksum range Start of Text hexadecimal 02 2 by
139. pecifies the D registers to be monitored on a word by word basis Function This function code specifies the register numbers to be monitored on a word by word basis Note that this command simply specifies the registers Actual monitoring is per formed by the WRM command after the register numbers are specified by this command If the volume of data is large and you wish to increase the communication rate it is effective to use a combination of the WRS and WRM commands rather than the WRR command If the power supply is turned off the register numbers specified will be erased The number of words to be specified at a time is 1 to 32 For the format of response in the event of failure see subsection 4 1 2 The command shown below includes the checksum function When performing communication without the checksum do not include the 2 byte checksum element in the command Command Response for normal operation Number 4 2 2 1l 3 2 of Bytes a j 2 i Command STX Station 01 0 WRS Number Register Comma Register Comma element number of words number or space number or space ST NO n 1 2 Command continued Register Checksum ETX CR number n Number of Bytes 2 2 2 2 1 4 Response STX ae 01 OK Checksum ETX CR element ST NO Example Specify that the active power register symbol W L and W H of the PR300 at station numb
140. rite command as shown below Command STX 01010WRW02D0273 0001 D0277 0001 ETX CR Response STX 0101OK ETX CR IM 77C01E01 10E lt Toc gt lt Ind gt lt 3 Procedures for Setting PR300 Functions gt 3 5 4 Stop Bit Procedure 3 19 1 To set the stop bit write data to the D register in the table below The data type is integer 2 After writing that value write 1 to the RS 485 writing status register D0277 D Register Reference No H No Description Effective Range f 1 1 bit D0274 40274 0111 Stop bit 2 2 bits RS 485 writing status i D0277 40277 0114 D0271 to D0276 are i E ie validated Initial value of stop bit 1 1 bit A NOTE When Modbus TCP is selected for the protocol the stop bit is fixed and unchangeable at 1 bit Example To set the stop bit to 2 2 bits For station number 01 use PC link communication without checksum and the random write command as shown below Command STX 01010WRW02D0274 0002 D0277 0001 ETX CR Response STX O101OK ETX CR IM 77C01E01 10E lt Toc gt lt Ind gt 3 5 5 Data Length Procedure lt 3 Procedures for Setting PR300 Functions gt 3 20 1 To set the data length write data to the D register in the table below The data type is integer 2 After writing that value write 1 to the RS 485 writing status register D0277 D Register Reference No H No Description
141. roadcast The corresponding multiple PR300 perform the function to receive and process a com mand in which this station number is specified 1 Specify P1 for the station number in the command to execute it 2 This command works independently of station numbers of slave stations 01 to 99 3 This command is applicable for writing only 4 No response is returned from the PR300 when communication is performed using this command Broadcast data No response from slave stations RS 485 communication Maximum communication distance 1200 m Maximum number of slave stations t be connected 31 L C JA C RPRs00 mem wo an an PAOD meN ARE HOY SO ae PRSsoO mem SSE ES an Se SS ae ee San Te renee ea eomme iien iE moane Beu ie ITT AIIE am IILI HE IITA sa aHa sa Pate ek mae 15 J Taa t H 1 3 Tm r IIT 7458 RA Lr 7 o te HE 11 Hia SL aw Te res 0 4 15 ut tom IZ a A oD Brova v VOMA Figure 4 2 Broadcasting Example of Starting Optional Integrations Use PC link communication without checksum and the random write command as shown below STX P1010WRW01D0302 0000 ETX CR D Register Reference No H No Description Effective Range Optional integration start stop 0 Stop D0302 40302 012p D0011 to D0014 1 Start IM 77C01E01 10E lt Toc gt
142. routine RECEIVECHR return interval off Interruption processing during receiving Start timer RCVCHRS RCVCHRS inputs lof 1 1 Fetch character string from receive buffer ENDS mid RCVCHR len RCVCHRS 1 select case ENDS case LFS Echo back capable RCVCHRS Initialize receive character string case CRS Receiving end flag STOPFLAG 1 Set receiving end flag case else end select interval on TIMEOUT return STOPFLAG 1 RCVCHRS Time Start timer Timeout processing Set timeout flag out 5 sec CRS Character string for display on screen Time out 5 sec IM 77C01E01 10E lt Toc gt lt Ind gt lt 5 Modbus RTU and ASCII Communication Protocols gt 5 1 5 Modbus RTU and ASCII Communication Protocols 5 1 Overview The use of Modbus communication enables the PR300 to communicate with a device such as a PC or PLC Sequencer Such a device can be used in communica tion to read write data from to D registers which are internal registers of the PR300 Hereafter PCs are generically called higher level devices Higher level device RS 485 communication Maximum communication distance 1200 m Maximum number of slave stations to be connected 31 C JA C JA PRSOD mwm wm aan PASOO mym mamana enom yama an Om NANE ue Ra Cue Ga LIne eee FY G EE i ihe yee oS Te tee at m 1I T w f ALIF ey othe er 1 S
143. rranged command data NN OQ or AION o Checksum error IM 77C01E01 10E lt Toc gt lt Ind gt lt 8 PR201 Original Communication Protocol gt 8 21 E Command DP Parameter 0 Reads setting value Function Reads the VT ratio CT ratio and integrated low cut power The read low cut power is always 0 Command response Number of bytes 1 2 1 2 2 1 1 Command STX DP 0 Station Checksum ETX CR element number ADR Number ofbytes 1 2 1 2 6 6 Response STX DP 0 Station element number VT ratio CT ratio ADR Response data is returned in a 16 byte ASCII character string Continued 4 2 1 1 Checksum ETX CR Integrated low cut power Response data to be returned for integrated low cut power is always 0 Example indicates the checksum Reads the setting value of PR300 with station number 01 value Command STX DP00100 ETXI CR Returns a VT ratio of 10 a CT ratio of 100 and an integrated low cut power of 0 for the above command Response STX DP00100001000010000 0010 ETX CR IM 77C01E01 10E lt Toc gt lt Ind gt lt 8 PR201 Original Communication Protocol gt 8 22 Parameter A Remote reset e Function Performs remote reset If remote
144. s Item Communication Hardware Details 2 wire system RS 485 Connected Device Compliant Standard EIA RS 485 Protocol Specification PC Link Communication with and without checksum A PC installed with a driver for PC link communication and SCADA software PLC FA M3 UT link module etc Modbus Communication ASCII and RTU modes A PC installed with a Modbus driver and SCADA software a Modbus compatible PLC etc PR201 original communication Personal computer etc with SCADA software installed to support PR201 original communication protocol Baud Rate 2400 bps 9600 bps 19200 bps Maximum Communication Distance 1200 m Maximum Number of Connectable Devices 31 Transmission Method 2 wire half duplex Synchronization Start stop synchronization Communication Method Non procedural Communication Cable Shielded twisted pair cable AWG24 equivalent size Ethernet Communication Specifications Protocols available for Ethernet communication interfaces include the Modbus TCP communication protocol Table 1 2 Ethernet Communication Specifications Item Communication Hardware Details 10BASE T 100BASE TX Compliant Standard Ethernet IEEE802 3 Access Control CSMA CD Connected Device Protocol Specification Modbus communication Port No 502 Ethernet equipped PC etc Baud Rate 10 Mbps 100 Mbps
145. s parameter values or others in accordance with the function code expressed in hexadecimal in the request IM 77C01E01 10E lt Toc gt lt Ind gt lt 6 Modbus TCP Communication Protocol gt 6 5 6 4 Communication with Higher level Devices 6 4 1 List of Function Codes The codes in the following list are command words higher level devices use to acquire information from the internal registers D registers of the PR300 Code Function Description 03 Reads data from multiple D registers Capable of reading data from a maximum of 64 successive D registers between D0001 and D0400 06 Writes data into D register Capable of writing data to one D register between D0001 and D0400 08 Performs loop back test Used when checking communication wiring 16 Writes data into multiple D registers Capable of writing data into a maximum of 32 successive register between D0001 and D0400 The write function codes cannot be written into read only or use prohibited D registers 6 4 2 Specifying D Registers Follow the procedures below to specify a D register from a higher level device 1 If using commercially available SCADA or other software specify the Ref No indicated in Chapter 7 Functions and Usage of D Registers 2 For customer created communication programs specify the H No indicated in Chap ter 7 Functions and Usage of D Registers Example To specify D0301 as the integratio
146. s and Usage of D Registers Note It is recommended to use the Ethernet network as a dedicated one for the PR300 IM 77C01E01 10E arbitrary lt Toc gt lt Ind gt lt 2 Setup gt 2 1 3 Procedure for Ethernet Serial Gateway Function Example Higher level device IP address 192 168 1 1 arbitrary Ethernet an mL i PR300 Te t 1 Station number 01 fixed with Ethernet 5 IP address 192 168 1 2 arbitrary communication function SRSSS myn wen aan PEE Ee sesieaies SREE Station number 02 Station number 03 Station number 20 arbitrary arbitrary arbitrary Communication parameters setting for PR300 Set up the communication function using the front panel keys Subsection 2 2 2 Conditions for Ethernet Communication Subsection 2 2 3 Conditions for Ethernet Serial Gateway Function Connect a higher level device with PR300 Subsection 2 3 2 Wiring for Ethernet Communication Connect a lower level device with PR300 Subsection 2 3 3 Wiring for RS 485 Communication for Ethernet Serial Gateway Function Create communication programs for the higher level device to perform communication Chapter 3 Procedures for Setting PR300 Functions For communication protocol see Chapter 6 Modbus TCP Communication Protocol For data storage lo
147. sage continued Write Data Write Data Error End of Message Mark Upper Digit Lower Digit Check CR LF 1 1 2 None 2 2 2 2 Response for normal operation Element Start of Station Function Code D Register D Register Message Number 06 Number Number Mark ST NO Upper Digit Lower Digit Number of bytes in RTU mode None i 1 1 1 Number of bytes in ASCII mode l 2 2 2 Response continued Write Data Write Data Error End of Message Mark Upper Digit Lower Digit Check CR LF 1 1 2 None 2 2 2 2 Example ASCII mode Write 0001 into the D0302 optional integration start stop at station number 11 0B06012D0001CO CR LF OB station number 11 06 function code 06 012D D register number 302 0001 data 0001 and CO error check Numbers in quotation marks are hexadecimal The following response will be returned to the message above 0B06012D0001 CO CR LF The frame same as the message is returned Message Response IM 77C01E01 10E lt Toc gt lt Ind gt 08 Performs loop back test Function lt 5 Modbus RTU and ASCII Communication Protocols gt This function code is used to check connection for communication 5 13 e For the format of response in the event of failure see subsection 5 1 4 e The 00 shown below marked with an asterisk are fixed e Any value can be selected for transmit data Message for
148. se STX DGX01PR201 24011 2000 ETX CR Ay NOTE When reading the model and suffix codes of PR300 PR201 is returned as model name because of the compatibility with existing application for PR201 IM 77C01E01 10E lt Toc gt lt Ind gt lt 8 PR201 Original Communication Protocol gt 8 20 Parameter Z Error response Function Returns an error response Command response Number ofbytes 1 2 1 2 2 1 1 Command STX DG Z Station Checksum ETX CR element number ADR There is no command data for data reading Number of bytes 1 2 1 2 2 2 1 1 Response STX DG Z Station Checksum ETX CR element number ADR Response data is returned in a 2 byte ASCII character string Example Reads an error response of PR300 with station number 01 indicates the checksum value Command STX DGZ0100 ETX CR Returns a checksum error response for the above comm Response STX DGZ018000 ETX CR Reads an error response by converting hexadec and imal data 80 into binary data 10000000 and then reading the 7th bit checksum error Bit information for error response wW Failure Status Overranged power Undefined Undefined Undefined Undefined Command data format error Ove
149. seeeaneeseseeeeneseenes 3 33 3 7 6 Reactive Energy ReSet ccsecccceseeceteseeneesesseneeeeseneeneneaneesenseees 3 34 3 7 7 Apparent Energy Reset seresiiooianis nn cate 3 34 3 8 Setting Control States ccceeccescesseeeeseeeeeeeeeeseeeeseeeenseeeesseesscaesaseeeenseeeeeneess 3 35 3 8 1 Integration Start Stop c ceccceceeceeeeeeeeeeeeeeeeeeeeeeeseneeeseeeeseneeseeeees 3 35 3 8 2 Optional Integration Start Stop sisisi acainnean 3 36 3 8 3 Demand Measurement Start Stop eccececceeeeeeeeeeeseeeeeeseeeeseeess 3 37 3 8 4 Confirmation and Release of Demand Alarm State cee 3 38 4 PC Link Communication Protocol 4 1 OVONVIOW E secede E setae dee ee ied acer E T 4 1 4 1 1 Configuration Of COMMANA cccceeceeeeeeeteeeeeeeeeeeeeseaeeseaeeeeieeeteeees 4 2 4 1 2 Configuration Of RESPONSE ceeeeeeeeeeteeeeeeeeteeeeseeeseaeeteneeessaeeseaees 4 3 4 1 3 Response Error Gods sarindotas iiaeaa ENERE 4 4 4 1 4 Specifying Broad aSt riisiin ninietan R 4 5 4 2 Command and Response ccccececeseeeseeeeesneeeeeneeseeesesaeenseeeeeeneeseeseaseeeeeeeaeas 4 6 WRD Reads D registers on a word by word basis 4 7 WWR Writes data into D registers on a word by word basSiS 4 8 WRR Reads D registers on a word by word basis in random ordev 4 9 WRW Writes data into D registers on a word by word basis in random order 4 10 WRS Specifies the D registers to be monitored on a word by word
150. t execute message processing however if the received command message is found to be abnormal In that case the PR300 either ignores the received message or creates a response message telling the received message is erroneous After receiving a normal command message and executing a given process the PR300 creates and sends a response message to which error check data appropriate for the command function code of the higher level device is added E Responses to Normal Messages For a loop back function or a function for writing to a single register the PR300 returns the received command message as a response message For a function for writing to multiple D registers the PR300 returns part of the received command message as the response message For a readout function the PR300 adds the read data to the ends of the station number and function code of the received command message and returns the message as the response message IM 77C01E01 10E lt Toc gt lt Ind gt lt 5 Modbus RTU and ASCII Communication Protocols gt 5 8 E Responses to Abnormal Messages If there is any failure other than transmission errors the PR300 returns the following re sponse message without executing any process Element Start of Station Function Error Error CR LF Message Number Code Code Check Mark ST NO 1 Number of bytes in RTU mode None 1 1 1 2 None Number of bytes in ASCII mode 1 2 2 2 2 2 1 T
151. ta byte by byte from the station number to the last data item excluding CR and LF Ignore the carry that may occur at the upper digit when adding up the data Example The method of calculating the LRC for the 110300C80004 LRC CR LF command for reading a series of four D registers of the device at station number 17 starting with the D00201 VT ratio register is as follows 1 Station number 17 is 11 in hexadecimal Change the data to byte by byte hex data 11 03 00 C8 00 04 In the Modbus ASCII message this data is represented by the ASCII code as two bytes i e 31 and 31 in hexadecimal 2 Add up the byte by byte hex data on a byte by byte basis gt 11 03 00 C8 00 04 EO 3 Find the two s complement of the lower one byte of the data thus added up gt 20 11100000 OxEO 00011111 complement 1 00100000 20 IM 77C01E01 10E lt Toc gt lt Ind gt lt 5 Modbus RTU and ASCII Communication Protocols gt 5 5 E RTU Mode In the RTU mode errors are checked by means of a CRC 16 cyclic redundancy check The CRC 16 value is the 16 bit remainder when the value obtained by concatenating the 8 bits of all blocks from the station number to the last data item of a message excluding the start bit stop bit and parity bit is divided by a predetermined 17 bit binary number Example of CRC 16 Calculation When executing function code 03 reads data from multiple D registers to
152. te ASCII code DG or DP 1 byte ASCII code 0 to Z 2 byte ASCII code 01 to 63 Variable length ASCII code byte size depends on the type of param eter 2 byte ASCII code 00 to FF End of Text hexadecimal 03 Carriage Return hexadecimal 0D When a communication error occurs the parameter Z of the DG command must be trans mitted to read out an error response The details of the communication error can be deter mined by the contents of the error response IM 77C01E01 10E lt Toc gt lt Ind gt lt 8 PR201 Original Communication Protocol gt 8 3 8 4 List of Commands Parameters common for preceding styles PR201S1 0 UZ005S2 0 Parameter Meaning Response data Format Range Resolution Size 0 Read measured values in batch Data of parameters 1 to 5 and 6 power factor measurement 46 bytes 1 Read electric energy Ol o 00000 to 9
153. ter z Initial Back No No H No Symbol Register Name Effective Range Value up R W D0001 40001 0000 kWh L Active ener int32 lower 2 bytes pee sak a 0 to 99 999 999 kWh 2 e R D0002 40002 0001 kWh H Active energy uint32 upper 2 bytes Register symbol Register name Effective setting range and unit Initial value Backup of data Backed up at instantaneous power failure O Backed up at setting X With no backup Permission of read write by communcation R Read W Write An asterisk in this column indicates that the number of writing action is limited to 100 000 times IM 77C01E01 10E lt Toc gt lt Ind gt lt 7 Functions and Usage of D Registers gt 7 4 D Register Map Process Data D0001 to D0146 D0013 D0014 40014 000C 000D Wh2 L Wh2 H uint 32 upper 2 bytes Optional active energy previous value uint 32 lower 2 bytes Optional active energy previous value uint 32 upper 2 bytes Register Symbol Register Name Effective Range R W D0001 40001 0000 kWh L Active energy uint 32 lower 2 bytes z 5 0 to 99 999 999 kWh D0002 40002 0001 kWhH Active energy uint 32 upper 2 bytes D0003 40003 0002 RkWhL Regenerative energy uint 32 lower 2 bytes 0 to 99 999 999 kWh R D0004 40004 0003 RkWh H Regenerative energy uint 32 upper 2 bytes D0005 40005 0004 Lead kVarh L LEAD reactive energy uint
154. ters starting with the D0201 VT ratio and CT ratio at station number 11 Message 0B1000C800004120000041204F CR LF OB station number 11 10 function code 16 OOC8 D register start number 201 0004 number of D registers 4 08 byte count number of D registers x 2 0000 VT ratio lower two bytes 4120 VT ratio upper two bytes 0000 CT ratio lower two bytes 4120 CT ratio upper two bytes and 4F error check Numbers in quotation marks are hexadecimal The following response will be returned to the message above Response 0B1000C800041 9 CR LF Write 1 into the D0207 setup change status to activate the writing into the VT ratio and CT ratio OBO600C E0001 20 CR LF OB station number 11 06 function code 06 OOCE D register start number 207 0001 writing data 0001 and 20 error check Numbers in quotation marks are hexadecimal IM 77C01E01 10E lt Toc gt lt Ind gt lt 6 Modbus TCP Communication Protocol gt 6 1 6 Modbus TCP Communication Protocol 6 1 Overview Modbus TCP is one of the protocol used to communicate with devices such as PCs or PLCs sequencers using the TCP IP protocol via Ethernet and other networks This communication protocol is used to perform read write operations with the D registers in the PR300 and exchange data with connected devices The PR300 can be connected to IEEE802 3 compli
155. the values of the VT and CT ratios The table below shows the set value range Secondary Rated Power x VT Ratio x CT Ratio Possible Set Value Range Less than 100 kW 0 to 99999 kVAh 100 kW to less than 1 MW 0 to 999999 kVAh 1 MW to less than 10 MW 0 to 9999999 kVAh 10 MW or greater 0 to 99999999 kVAh A NOTE The secondary rated power of the PR300 changes depending on its model and suffix codes IM 77C01E01 10E lt Toc gt lt Ind gt lt 3 Procedures for Setting PR300 Functions gt 3 31 3 7 Executing Reset Operations 3 7 1 Remote Reset Procedure 1 To execute remote reset write data to the D register in the table below The data type is integer D Register Reference No Description Effective Range g If other than 1 Invalid D0400 40400 018F Remote reset If 1 PR300 reset Initial value of remote reset 0 A NOTE e When remote reset is executed maximum minimum and instantaneous voltage values and maximum and instantaneous current values will be reset Optional integra tion is terminated if it is being performed e Even when remote reset is executed active energy reactive energy and apparent energy data as well as set parameter values are retained Example To execute remote reset For station number 01 use PC link communication without checksum and the random write command as shown below Command STX 01010WRW01D0400 0001 ETX CR Response STX 0101
156. tializes the maximum and minimum values maximum and minimum values of voltage 1 to voltage 3 and maximum value of current 1 to current 3 Command response Number of bytes 1 2 1 2 2 1 1 Command STX DG 9 Station Checksum ETX CR element number ADR There is no command data for data reading Number of bytes 1 2 1 2 0 2 1 1 Response STX DG 9 Station No data Checksum ETX CR element number ADR There is no response data IM 77C01E01 10E lt Toc gt lt Ind gt lt 8 PR201 Original Communication Protocol gt 8 12 Example Initializes the maximum and minimum values of PR300 with station number 01 indi cates the checksum value Command STX DG90100 ETXI CR Returns the following response for the above command Response STX DG90100 ETXI CR Parameter A Reads measured value and maximum minimum values in batch Function Reads the active energy optional electric energy previous and current values active power voltage 1 current 1 power factor maximum voltage 1 minimum voltage 1 and maximum current 1 Command response Number oF byes 1 2 1 2 2 1 1 Command STX DG A Station Checksum ETX CR element number ADR There is no command data for data reading Number amellet 2 s s s gt
157. tion number 01 are read out in a batch OO indicates the checksum value Command STX DGO010C ETXI CR The following response is returned for the above command Response STX DG001 100001000010000 1 000E 31 000E 31 000E 3G0 800LIK ETXI CR 1 2 8 4 5 6 7 1 Active energy 10000 kWh 2 Optional electric energy previous value 10000 Wh 3 Optional electric energy current value 10000 Wh 4 Active power 1 000E 3 W 10000 W 5 Voltage 1 1 000E 3 V 1000 V 6 Current 1 1 000E 3 A 1000 A and 7 Power factor GO 800 IM 77C01E01 10E lt Toc gt lt Ind gt lt 8 PR201 Original Communication Protocol gt 8 6 Parameter 1 Reads electric energy e Function Reads the active energy e Command response Number of bytes 1 2 1 2 2 1 1 Command STX DG 1 Station Checksum ETX CR element number ADR There is no command data for data reading Number 4 2 14 2 5 2 1 1 of bytes Response STX DG 1 Station Checksum ETX CR element number ADR Response data is returned as a 5 byte ASCII character string 00000 to 99999 e Example Reads the active energy of PR300 with station number 01 indicates the checksum value Command STX DG10100 ETX CR Returns a response with the active energy of 10000 kWh for th
158. tion only Please make it reference at the time of actual application creation Variable declaration Option Explicit Dim strSendData As String Sending data Dim strReceive As String Received data Dim binChrs 11 As Byte Binary data Dim iFlag As Integer Flag of wait for completion Private Sub cmdSendl Procedure to connect with PR300 by TCP IP and to create send data Variable declaration Dim iCount As Integer Dim strCher As String Set properties of Winsock control Winsock1 Protocol sckTCPProtocol TCP protocol Winsock1 RemoteHost 192 168 1 1 IP address of PR300 to be connected Winsock1 RemotePort 502 Port of Modbus TCP to be used Request TCP connection of PR300 Winsock1 Connect Request TCP connection Do Until Winsock1 State sckConnected Wait for the completion of connection iFlag DoEvents Loop IM 77C01E01 10E lt Toc gt lt Ind gt lt 6 Modbus TCP Communication Protocol gt 6 1 4 Create sending data strSendData 123400000006010300000002 Sending command character string L y Number of D registers 0002 2 7 ________D register start number 0000 D0001 3 ___________ Function code 03 Reads data from multiple D registers Station number of PR300 01 Station 01 Number of sending data bytes after station number 0006 6 bytes Protocol ID 0000 Fixed Transaction ID 1234 Arbitrary 2
159. tive energy D0208 40208 OOCF PULSE SLCT Measurement item for pulse output 2 LEAD reactive energy 0 Oo R W 3 LAG reactive energy 4 Apparent energy D0209 40209 00D0 PULSE Pulse unit uint 16 1 to 50000 100wh pls 10 Oo R W D0210 40210 00D1 PULSE WIDTH ON pulse width uint 8 1 to 127 10ms R W If other than 1 Invalid D0211 40211 00D2 PULSE STS Pulse output writing status If 1 Writing is executed x WwW D0208 to D0210 are validated 0 Active power 1 Reactive power 2 Apparent power 3 Voltage 1 4 Voltage 2 5 Voltage 3 D0212 40212 00D3 AOUT SLCT Measurement item for analog output 0 O R W 6 Current 1 7 Current 2 8 Current 3 9 Power factor 10 Frequency D0213 40213 00D4 LOWER SCAL L Lower limit of scaling float lower 2 bytes 0 0 to 50 0 50 O R W D0214 40214 00D5 LOWER SCAL H Lower limit of scaling float upper 2 bytes D0215 40215 00D6 UPPER SCAL L Upper imit of scaling float lower 2 bytes 50 0 to 100 0 4 oo o A D0216 40216 00D7 UPPER SCAL H Upper limit of scaling float upper 2 bytes If other than 1 Invalid D0217 40217 oops ANALOG AOUT Analog output writing status If 1 Writing is executed x w D0212 to D0216 are validated D0218 40218 00D9 DEMAND SLCT Demand power current 0 Active power 1 Current 0 G R W D0219 40219 oopa DEMAND INTERVAL Demand period AO Sojiminute 30 O Rw TIME Demand alarm mask time to 60 minute D0220 40220 00DB DEMAND
160. upper 2 bytes D0111 40111 006E VAMINL Minimum apparent power float lower 2 bytes 0 0 to 9 999 999 9 VA x R D0112 40112 006F VA MIN H Minimum apparent power float upper 2 bytes D0113 40113 0070 V1 MAXL Voltage 1 maximum value float lower 2 bytes 0 0 to 9 999 999 9 V x R D0114 40114 0071 V1 MAX H Voltage 1 maximum value float upper 2 bytes D0115 40115 0072 V1 MINL Voltage 1 minimum value float lower 2 bytes 0 0 to 9 999 999 9 V x R D0116 40116 0073 V1 MINH Voltage 1 minimum value float upper 2 bytes D0117 40117 0074 V2 MAXL Voltage 2 maximum value float lower 2 bytes x 0 0 to 9 999 999 9 V x R D0118 40118 0075 V2 MAX H Voltage 2 maximum value float upper 2 bytes D0119 40119 0076 V2 MINL Voltage 2 minimum value float lower 2 bytes 0 0 to 9 999 999 9 V x R D0120 40120 0077 V2 MINH Voltage 2 minimum value float upper 2 bytes D0121 40121 0078 V3 MAXL Voltage 3 maximum value float lower 2 bytes 0 0 to 9 999 999 9 V x R D0122 40122 0079 V3 MAX H Voltage 3 maximum value float upper 2 bytes D0123 40123 007A V3MINL Voltage 3 minimum value float lower 2 bytes 0 0 to 9 999 999 9 V x R D0124 40124 007B V3 MIN H Voltage 3 minimum value float upper 2 bytes D0125 40125 007C A1 MAXL Current 1 maximum value float lower 2 bytes 0 000 to 999 999 990 A x R D0126 40126 007D A1 MAX H Current 1 maximum value float upper 2 bytes D0127 40127 007E A2 MAXL Current 2 maximum valu
161. with checksum PC link communication without checksum does not require this 2 byte space of ASCII code Example STX 01010WRDDOO01 0200 ETX CR Add up the hexadecimal values of the ASCII codes of each text 0 30 T 31 W 57 R 52 D 44 2C 2 32 30 31 30 31 30 57 52 44 44 30 30 30 31 2C 30 32 372 Lowermost two digits of the added results as the checksum STX 01010WRDD0001 0272 ETX CR IM 77C01E01 10E lt Toc gt lt Ind gt 8 ETX End of Text This control code indicates the end of acommand string The ASCII code is 03 in hexadecimal 9 CR Carriage Return This control code indicates the end of acommand The ASCII code is OD in hexadeci mal A NOTE The control codes STX ETX and CR are essential for commands when you create a communication program for PC link communication Omission of any of them or incorrect lt 4 PC Link Communication Protocol gt order of them results in communication failure 4 1 2 Configuration of Response Responses from the PR300 with respect to a command sent from the higher level device consist of the elements shown below which differ depending on the condition of communi cation normal or failure 1 Normal Communication When communication completes normally the PR300 returns a character string OK and data corresponding to a command No parameter data area for write command

PR300 Power and Energy Meter Communication Interface

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