DATA CONCENTRATOR PD22 TYPE USER`S MANUAL
Contents
1. 3 A701 4 RaN2 5 RBE1 6 R801 7 R8N1 77 4519 RW 0 Connection type for the Port 2 O direct connection 78 4520 RW 0 1 Apply force the apply of settings from registers 4516 4519 4550 4569 RW Initiating a sequence of orders sent to the modem after switching the data concentrator and the modem on Each register includes two ASCII characters The sequence must be ended by the CR character ODH Standard sequence of orders ATQOVO amp C1 amp D1M1L1S0z210V 8 TECHNICAL DATA Serial port 1 baud rate information unit interface Serial port 2 baud rate information unit interfejs Transmission protocol Power consumption Rated operation conditions supply voltage supply voltage frequency ambient temperature relative air humidity external magnetic field working position p 1200 2400 4800 9600 19200 38400 57600 115200 bit s 1 start bit 7 or 8 data bits 1 bit for even odd parity 1 or 2 stop bits 2 x RS 485 1200 2400 4800 9600 19200 38400 57600 115200 bit s 1 start bit 7 or 8 data bits 1 bit for even odd parity 1 or 2 stop bits RS 485 RS 232 USB 1 1 cable no longer than 3m MODBUS lt 4VA 20 24 50 V a c d c or 85 230 253 V a c d c 40 50 60 440 Hz 0 23 55 C lt 95 condensation inadmissible 400 A m any Storage and transport conditions ambient temp2. 5 2 Record of values into the register code 06 Demand The function enables the modification of the register contents It is ac cessible in the broadcast mode Example Register address Value Address Function Checksum Hi Lo Hi Lo 11 06 00 87 03 9E C1 LRC Answer The right answer to the demand to record the value into the register is the message retransmission after the operation carrying out Example Register address Value Address Function Checksum Hi Lo Hi Lo 11 06 00 87 03 9E C1 LRC 5 3 Record into n registers code 16 Demand The function is accessible in the broadcast mode It enables the modifi cation of the register contents 15 Example Record of two registers beginning from the reg address 136 ister with the Register Number Check Address Function address registers of Data Dela sum Hi Lo Hi Lo 078 TH J Lo Hi Lo 11 10 00 87 00 02 04 00 OA 01 02 45 LRC Answer The correct answer includes the unit slave address ting address and the number of recorded registers unction code star Example Register address Number of registers Address Function Checksum Hi Lo Hi Lo 11 10 00 87 00 02 56 5 4 Report identifying the device code 17 Demand LRC This function enables the
3. credible e g because of the lack of transmission from the device Registers are for readout only 8100 8169 long 32 bity The value is placed in two successive 16 bit regi sters Registers contain the same data as 32 bit registers from the area 8000 8034 E g registers 8100 and 8101 contain value from the register 8000 registers 8102 and 8103 con tain value from the register 8001 etc Registers are for readout only The PD22 concentrator is an active device master in relation to the devices connected from the object side however it is a passive slave device in relation to the devices connected from the computer side According the entered configuration the concentrator reads out pa rameters from devices connected from the Port 1 side with a defined frequency The archiving of data read out from the devices follows with the freque ncy defined in the configuration Data are stored in the concentrator memory which is battery supported Moreover alarm events defined in the configuration are recognised and archived at the moment of their occurrence In the archive buffer one can store maximum 390000 data records and 44400 events After the buffer filling current data are stored and the oldest are lost E The PD22 concentrator additionally enables the transmission of demands to particular devices Each demand to the slave devices depends on the device type and is defined in the User s Manual
4. data exchange between devices and the master system Moreover it allows to increase the number of devices connected to the system Two serial ports are used for communication The first port Port 1 ha ving two RS 485 interface systems destined to communicate with devi ces working in the object The second port Port 2 has RS 485 RS 232 C and USB interfaces destined to communicate with the master system through wire links An asynchronous MODBUS character communication protocol has been implemented on the serial link The concentrator has a real time clock Parameter set of the concentrator serial link address 1 247 baud rate 1200 2400 4800 9600 19200 38400 57600 115200 bit s working mode ASCII RTU information unit ASCII 8N1 7E1 701 7N2 RTU 8N2 8E1 801 8N1 The data concentrator realises following functions readout of process parameters values from devices which are ac cessible as concentrator parameters archiving of process data with a defined frequency which are made available on demand for the master system 390000 records archiving of emergency events 44400 events data exchange consisting in transmission of demands from the ma ster system to the specific device eg readout or parameter record The exemplary network topology with the use of data concentrators is shown on the Fig 1 5 Fig 1 Exemplary network topology with the application of PD22 data concentrators B
5. 2 15 Line A of the RS 485 interface of Port 2 16 Line B of the RS 485 interface of Port 2 Fig 3 Electrical connections of the PD22 data concentrator The PD22 data concentrator has two serial ports the port 1 and the port 2 The Port 1 is destined to communicate with devices of Slave type Two RS 485 interfaces systems are connected to the Port 1 The operation of the two systems is identical Interface systems are electrically connected and galvanically isolated from the remaining system Interface lines are connected to terminals 1 2 3 4 for the first system and 5 6 7 8 for the second system The port 2 is connected to the RS 232C and RS 485 interface system The RS 485 interface systems are electrically connected to the port The RS 485 bus enables the direct addition up to 32 systems of the RS 485 interface The maximal length of the bus depends on the baud rate and includes itself in limits from several tens of meters for high speeds and up to ca 1200 meters for small speeds e g 9600 bps The Port 2 is destined to communicate the concentrator with an external device of Master type The port 2 is connected to RS 485 RS 232 and USB interface systems nterface systems are connected electrically to the port The RS 485 interface system enables to connect the concentrator to the RS 485 serial bus Its lines are led out to terminals 14 15 16 RS 232C and USB interfaces are destined to the connection with de vices having such
6. 2 PD22 DATA CONCENTRATOR SET The PD22 data concentrator set includes PD22 data 1 pc PD22 user s 1 pc guarantee Card css cete go antenne 1 pc CD diskette with the PD22Wiz configuration program and controllers of the USB port 1 pc When unpacking the data concentrator please check whether the type and version code on the data plate correspond to the order code 3 BASIC REQUIREMENTS SAFETY SERVICE Symbols located in this user s manual mean WARNING N Warning of potential hazardous situations Especially impor tant One must acquaint with this before connecting the con centrator The non observance of notices marked by these symbols can occasion the damage of the instrument CAUTION AN Designates a general useful note If you observe it handling of the concentrator is made easier One must take note of this when the instrument is working inconsistently to the ex pectations Possible consequences if disregarded The removal of the concentrator housing during the guaran N tee contract period may cause its cancellation In the security scope the concentrator meets the requirements N of the EN 61010 1 standard Remarks concerning the operator safety service The PD22 converter is destined to be mounted on a 35 mm rail Non authorized removal of the required housing inappr
7. CASTING DIES AND OTHER TOOLS QUALITY PROCEDURES According to ISO 9001 and ISO 14001 international requirements All our instruments have CE mark For more information please write to or phone our Export Department Lubuskie Zaktady Aparat w Elektrycznych LUMEL S A ul Sulechowska 1 65 022 Zielona G ra Poland Tel 48 68 329 51 00 exchange Fax 48 68 329 51 01 www lumel com pl e mail lumel lumel com pl Vo sprees gt gt lt Export Department Tel 48 68 329 53 02 or 53 04 Fax 48 68 325 40 91 e mail export lumel com pl PD22 07
8. DATA CONCENTRATOR PD22 TYPE USER S MANUAL Contents T SAPPEICATI N e 5 2 SET OF THE DELIVERED DATA CONCENTRATOR 7 3 BASIC REQUIREMENTS AND SAFETY SERVICE 7 4 DESCRIPTION OF THE DESIGN AND INSTALLATION 8 4 1 Description of the design sss 4 2 Terminal description reete ner nnne 4 3 Instalacja portu COM dla Windows 4 4 Instalacja sterownik w portu COM na komputerze 4 5 Concentrator configuration 5 DESCRIPTION OF THE TRANSMISSION PROTOCOL FUNCTIONS 13 5 1 Readout of n registers code 03 13 5 2 Record of values to the register code 06 14 5 3 Record to n registers code 16 14 5 4 Identifying report of the device code 17 15 6 ERROR CODES dai et 16 7 REGISTER MAP OF THE PD22 DATA CONCENTRATOR 18 8 TECHNICAL DATA 9 ORDERING CODES 10 MAINTENANCE AND GUARANTEE 32 1 APPLICATION The PD22 data concentrator is destined for telemetering computer sy stems as an intermediate element in the data exchange between the object side and the master system The data concentrator speeds up the
9. cial note to the correct connection of external signals see table There are three signalling diodes on the frontal plate SUPPLY DEPENDING on THE EXECUTION CODE 80 253 V a c d c or 20 50 V a c d c D1 two colour diode Green colour continuous lighting signals the correct work of the concentrator Di PD22 Green colour flickering signals the work D2 o in the configuration mode Red colour signals a configuration error D3 PORT O D2 Green diode PORT2 O signals the transmission of data from the side of devices of Slave type D3 Yellow diode signals the transmission of data from the side of devices of Master type Description of PD22 data concentrator Table 1 Terminal Terminal description USB 1 Output 5 V for bus polarisation 2 Line A of the first RS 485 interface of Port 1 3 Line B of the first RS 485 interface of Port 1 12345678 4 Line GND of RS 485 interface of Port 1 F1 5 Line GND of RS 485 interface of Port 1 6 Line B second RS 485 interface of Port 1 ABOOBA 7 Line A second RS 485 interface of Port 1 RS485 O RS 495 8 Output 5 V for bus polarisation 9 10 Concentrator supply lines 14 Not used 12 Output TxD of the RS 232 interface of Port 2 13 Input RxD of the RS 232 interface of Port 2 14 Line GND of the RS 232 and RS 485 interface of Port
10. continuation Table 2 43 4205 R 0 5 90 umber of registers read out from he buffer 44 4206 R 0 999 o of the archived register 45 4207 4208 R Archiving time in the format given at he description of registers 4201 4202 46 4209 R High x highest part of the archived register value x data of float type 47 4210 R Low x lowest part of the archived register value 48 4211 4215 R Analogous contents as in registers 4206 4210 for the next archived parameter 49 4216 4220 R Analogous contents as in registers 4206 4210 for the next archived parameter 50 4221 4225 R Analogous contents as in registers 4206 4210 for the next archived parameter 51 4226 4230 R Analogous contents as in registers oh 4206 4210 for the next archived 4251 4255 parameter 4300 4345 Read out of events from archiving buffer 52 4300 RW 0 5 Operation code O do nothing 1 set the time on the value from registers 4301 4302 or later 2 set the time on the buffer beginning 3 time readout of the current reado ut from the event buffer 4 readout from the event buffer f n registers n in the register No 4303 5 the read out of the register 4305 occasions the readout from the event buffer of n registers n in the register No 4303 continuation Table 2 Item Register address Opera tions Range unit De
11. e every 5 years In case of some incorrect operations 1 In the period of 12 months from the date of purchase One should take the instrument down from the installation and return itto the Manufacturer Quality Control Dept If the unit has been used in compliance with the instructions the Manufacturer guarantees to repair it free of charge 2 After the guarantee period One should turn over the instrument to repair in a certified service workshop The disassembling of the housing causes the cancellation of the granted warranty Spare parts are available for the period of five years from the date of purchase Our policy is one of continuous improvement and we reserve the right to make changes in design and specifications of any products as engineering advances or necessity requires and revise the above specifications without notice a SALES PROGRAM MEASUREMENT DIGITAL and BARGRAPH PANEL METERS CONTROL MEASURING TRANSDUCERS RECORDING ALOG PANEL METERS DIN INSTRUMENTS ALOG and DIGITAL CLAMP ON METERS DUSTRIAL and HOUSEHOLD CONTROLLERS ART AND PAPERLESS RECORDERS OWER CONTROL UNITS and INVERTERS ARGE SIZE NUMERIC and ALPHANUMERIC DISPLAYS UTOMOTIVE DASHBOARD INDICATORS CCESSORIES FOR MEASURING INSTRUMENTS EASURING SYSTEMS ENERGY HEAT CONTROL USTOM MADE PRODUCTS WE ALSO OFFER OUR SERVICES IN THE PRODUCTION OF ALUMINIUM ALLOY PRESSURE CASTINGS PRECISION ENGINEERING AND THERMOPLASTICS PARTS m PRESSURE
12. ed 4020 1029 events 21 4020 RW 0 32000 Safety code 22 4021 RW 0 3 Operation code O read out of the element from the configuration table 1 record of the configuration table element 2 erasing of the configuration table element 3 erasing of all configuration table elements Operations with codes 1 2 3 require a correct code in the register 4020 23 4022 RW 0 99 No of the event configuration table element event ID continuation Table 2 24 4023 RW 0 1 Status 0 archiving disabled 1 archiving enabled 25 4024 RW 1 999 PD21 register address 26 4025 RW 1 59 Event archiving condition 1 gt dn 2 dn change gt Idnl 27 4026 Reserved 28 4027 Reserved 29 4028 RW High dn highest part of dn data for the event archiving condition dn data of float type 30 4029 RW Low dn lowest part of the dn data for the archiving condition Configuration of a single demand 4100 4122 into the device 31 4100 RW Operation code O do nothing 1 send the frame to the device 2 read out the answer when the status 1 3 erase the demand 32 4101 RW 0 4 Status O lack of demand 1 ready answer 2 demand received for realisation 3 demand under realisation 4 demand realisation impossible 33 4102 RW 2 40 Number of frame bytes 34 4103 RW Frame beginning address FC 35 4104 RW Register address Hi Lo 36 RW Success
13. ed to the port 1 of the concentrator The signification of particular registers depends on the configura tion Registers can be read out and recorded 1000 2999 float 32 bits he value is placed in two successive 16 bit regi ers Registers contain the same data as 32 bit re isters from the area 1 999 e g registers 1000 and 001 contain the value from the register 1 registers 002 and 1003 contain the value from the register 2 c Registers can be read out and recorded 3QRH 4000 4569 integer 16 bits The value is placed in one 16 bit register The de scription of registers is included in the Table 1 Registers can be read out and recorded 8000 long 32 bits The register contains the device status Successi ve register bits of value 1 mean bO error of the RAM memory b1 transmission error from the device side b2 filled data archiving buffer b3 filled event archiving buffer The register is for readout only gt 8001 8002 long 32 bity The value is placed in the 32 bit register Suc cessive register bits contain the index of current event occurrence The bit O value means that the event does not occur Registers are for readout only 8003 8034 long 32 bity The value is placed in the 32 bit register Succes sive register bits contain the index of data credibi lity from registers 1 999 The bit O value means that the data is not
14. erature 20 70 C relative air humidity lt 95 condensation inadmissible Ensured protection class by the frontal plate from the frontal plate IP 40 from the terminal side IP 20 Dimensions 45 x 120 x 100 mm Weight 0 25 kg Housing adapted to be mounted on a 35 mm rail Elektromagnetic compatibility immunity acc to EN 61000 6 2 emission acc to EN 61000 6 4 Safety requirements acc to EN 61010 1 installation category III pollution level 2 Maximal phase to earth working voltage for the supply circuit 300 V for other circuits 50 V a 9 ORDERING CODES Data concentrator danych PD22 x xx x Supply voltage BE CIO ERN ra tinc 1 20 50 V a c d c nA e nuo de u ns Rense Version A 00 CUSTOM MAS s uar nee add XX Acceptance tests without an extra quality inspection certificate with an extra quality inspection certificate acc users agreement 3s ee nenne kenne lt The code number will be established by the manufacturer Example of order coding PD22 1 00 7 means PD22 data concentrator of PD22 type 1 adapted for supply voltage 85 253 V a c d c 00 catalogue standard version 7 with an extra quality inspection certificate pe 10 MAINTENANCE AND GUARANTEE The PD21 concentrator does not require any periodical maintenance The applied battery requires exchang
15. he controller for the given sy stem WIN XPNCDM Setup exe for Windows 2000 Windows XP Windows Vista and Windows Server 2003 WIN XP 64 CDM x64 Setup exe for Windows XP x64 Windows Vista x64 and Windows Server 2003 x64 This software will install in the system controllers for new devices and ports Next one must connect the concentrator which will be found and identified by the system as USB Serial Converter and will be assigned a port COM for it USB Serial Port 4 5 Koncentrator configuration Before starting concentrator applications one must set transmission parameters for the port that means define the network address baud rate and the transmission mode for the port 2 Manufacturer settings for these parameters arte as follows Address 254 Mode RTU 8N1 Baudrate 115200 bit s In order to perform changes of these settings one must connect the concentrator by the USB interface with the PC computer turn the concentrator supply on press the push button of the concentrator configuration fig 4 untill the green diode begins to flicker signaling the configuration mode Start the PD22Wiz program Push and by its help configure para button meters into required Exitfrom the concentrator confi guration mode by plressing the configuration push button co till the moment as the green diode transits to a continuous lighting signaling the normal working mode Fig 4 L
16. hether the device reset has occurred The record of into the register causes the index erasing 66 4500 RW 0 1 Standard settings The writing of 1 into the register and the data concentrator renewed switching on causes the era sing of the configuration tables and the erasing of the archiving and event buf fer After carrying out these operations the register value is set on O 67 4505 RW 0 32000 Safety code to create the configu ration 4510 4512 Date and internal clock time 68 4510 RW Year rrrr 2000 month 2 8 bit w 69 4511 RW Day hour 2 8 bit w 70 4512 RW Min sec 2 8 bit w 71 4513 RW Baud rate for the port 1 from device side O 1200 1 2400 2 4800 3 9600 4 19200 5 38400 6 57600 7 115200 bps 72 4514 RW Transmission mode for the port 1 O A8N1 1 ATN2 2 ATE1 3 A701 4 RaN2 5 R8E1 6 R801 7 R8N1 73 4515 RW Timeout for devices 0 1 s continuation Table 2 Register Opera Range Item address tions unit Description 74 4516 RW 1 254 Address 75 4517 RW 0 7 Baud rate for the Port 2 from the ma ster device O 1200 1 2400 2 4800 9600 4 19200 5 38400 6 57600 7 115200 bps 76 4518 RW 0 7 Transmission mode for the Port 2 O A8N1 1 ATN2 2 ATE1
17. interfaces such as e g computer Signals of the RS 232 interface are led out on terminals 12 18 14 The USB interface is accessible on the concentrator frontal plate RS 485 RS 232 and USB interfaces cannot be used simultaneously The PD22Wiz program is added to the concentrator on a CD diskette and it is destined for configuration and PD22 service 4 3 Installation of the COM port for Windows The USB port for the PD22 concentrator uses controllers FTDIBUS Dri ver and FTDIPORT Driver licensed by the Future Technology Devices International Ltd Company This software creates in the system the new USB Serial Converter de vice and assigned to it Port Com USB Serial Port 9 The installation of the controller in the Windows system causes the ad dition of a successive COM serial port to the list of ports serviced by the operating system 4 4 Installation of COM port controllers on the computer On the CD diskette added to the concentrator there are catalogues with controllers for following operating systems WIN_XP Windows 2000 Windows XP Windows Vista Windows Server 2003 WIN XP 64 Windows Vista x64 Windows XP x64 Windows Server 2003 x64 NOTICE Controllers do not co operate with 98 and ME Windows systems Installation in systems Windows 2000 Windows XP Windows Vista and Windows Server 2003 In order to install controllers for these systems one must start the pro gram workable from the catalogue with t
18. ive frame bytes 37 4122 RW Last two frame bytes continuation Table 2 Item Register address Opera tions Range unit Description 4200 4255 Data read out from the archive buffer 38 4200 RW Operation code Record of below va lues into the register occasions the realisation of following functions 0 do nothing 1 set the time on the value from registers 4201 4202 or later 2 set the time on the buffer beginning 3 time readout of the current reado ut from the archive buffer 4 readout from the archive buffer of n registers n in the register No 4203 5 the readout of the register 4205 occasions the readout of n regi sters from the archive buffer n in the register No 4203 39 4201 RW High tm highest part of the time in se conds since 1 01 1970 on which one must set the data readout from the ar chive buffer tm data of long type 40 4202 RW Low tm lowest time part as above 41 4003 RW Number of registers which is to be read out from the buffer multiplicity of 5 42 4004 RW Readout status O out of date data lack of order instruction 1 order realised with success 2 impossible realisation of task buffer empty 3 less of data have been read out than required 4 lack of data in the buffer from the defined time in registers 4201 4202 and later 25
19. m address Hi Lo Hi Lo 0 01 04 1 00 01 4F LRC Example incorrect answer Slave Function Error Checksum address 0 81 01 73 LRC n this example the master device addresses the demand to the slave unit with number OAh The function with code 01 is not implemen ted in the concentrator then the device returns the incorrect answer with the number 01 error code It means a forbidden function in the slave device Possible error codes and their meanings are shown in the table below Meaning Forbidden function Forbidden data address Forbidden data value Demand during the realization Impossible demand realization 7 REGISTER MAP OF THE PD22 DATA CONCENTRATOR In the PD22 data concentrator data are placed in 16 bit or 32 bit registers Process variables and concentrator parameters are situated in the area of registers in the way depended on the variable value type Bits in the 16 bit and 32 bit registers are numbered from the lowest to the highest bit 00 015 or 00 032 32 bit registers with addresses 1 999 include float numbers according to the IEEE 754 standard 32 bit registers with addresses 8000 8169 include long type numbers The map of registers is divided in following areas Table 1 Address iH Value type Description range UP m 1 999 float 32 bits The value is placed in the 32 bit register The regi ster includes data read out from devices connect
20. ocation of the push button to configure the PD22 data concentrator 13 5 DESCRIPTION OF THE TRANSMISSION PROTOCOL FUNCTIONS In the PD22 concentrator following protocol functions has been imple mented Signitication Readout of n register Record of a single register Record of n registers Slave device identification 5 1 Read out of n registers code 03 Demand The function enables the readout of values included in registers in be ing addressed slave device Registers are 16 or 32 bit units which can include numerical values bounded with changeable processes and the like The demand frame defines the 16 bit start address and the number of registers to readout The signification of the register contents with address data can be dif ferent for different device types The function is not accessible in the broadcast mode Example Readout of 3 registers beginning by the register with 6Bh address Register address Number of registers Address Function Checksum Hi Lo Hi Lo 11 03 00 6B 00 03 7E LRC Answer Register data are packed beginning from the smallest address first the higher byte then the lower register byte Example the answer frame Value in Valuein Value in B Number Function of ns er Checksum o bytes Hi Lo Hi Lo Hi Lo 11 03 06 02 2B 00 00 00 64 55 LRC
21. opriate use incorrect installation or operation creates the risk of injury to personnel or damage to equipment For more detailed information please study the User s Manual All operations concerning transport installation and commissioning as well as maintenance must be carried out by qualified skilled per sonnel and national regulations for the prevention of accidents must be observed According to this basic safety information qualified skilled personnel are persons who are familiar with the installation assembly commis sioning and operation of the product and who have qualifications ne cessary for their occupation Before switching the concentrator on one must check the correctness of connection to the network Do not connect the concentrator to the network through an autotrans former 4 DESCRIPTION OF THE DESIGN AND INSTALLATION 4 1 Description of the design The PD21 data concentrator is destined to be fixed on a 35 mm rail support acc to EN 60715 in the way showed on the fig 2 222222022 PD22 PORT1 PORT2 120 u C USB SSSOSSSSS 100 45 4 gt Fig 2 Fixing way ofthe PD22 data concentrator 4 2 Terminal description One must connect the supply and external signals acc to the fig 3 Particular leads are described in the table 1 Notice One must take a spe
22. s of interfaces of particular devices Concentrator tasks are defined through registers described in the table 2 Contents of 16 bit registers with addresses from 4000 to 6999 Operations mean admissible actions on registers R readout W Record Table 2 Register opera Range en Item address tions unit Description Configuration of readout opera 4000 4009 tions or parameter recording from to scanned devices 1 4000 RW 0 32000 Safety code 2 4001 RW 0 3 Operation code 0 readout of the configuration table element 1 record of the configuration table element 2 erasing of the configuration table element 3 erasing of all table elements Operations with codes 1 2 3 require a correct code in the register 4000 4002 RW 0 99 No of the configuration table element 4 4003 RW 0 1 Status 0 operation disabled 1 operation enabled 5 4004 RW 1 999 PD22 register address 6 4005 RW 1 3255 Address of the scanned device gt continuation Table 2 4006 RW Address of the basic device register 4007 RW Number of registers 4008 RW Lower byte higher byte Register type 0 char 8 bit int 1 16 bit int 2 32 bit long 3 32 bit float 4 32 bit float in the shape of 2 16 bit sequence of bytes 12 34 5 32 bit float in the shape of 2 16 bit sequence of bytes 21 43 6 32 bit float in the shape of 2 16 bit sequence of by
23. scription 53 4301 RW High tm highest time part in se conds since 1 01 1970 on which one must set the data readout from the event buffer tm data of long type 54 4302 RW Low tm lowest time part as above 55 4303 RW Number of registers which is to be read out from the buffer multiplicity of 4 56 4304 RW Readout status O out of date data 1 order realised with success 2 realisation of task impossible buffer empty 3 less of events has been read out than required 4 lack of events in the buffer from the defined time in registers 4201 4202 and later 57 4305 0 4 80 Number of registers read out from the buffer 58 4306 Event identifier ID 59 4307 4308 Archiving time in the format given when describing registers 4301 4302 60 4309 0 1 Event status 1 occurrence O withdrawal 6 2 4310 4313 Analogous contents as in registers 4306 4309 for the next archived event 62 4314 4317 Analogous contents as in registers 4306 4309 for the next archived 27 event continuation Table 2 63 4318 4321 Analogous contents as in registers 4306 4309 for the next archived event 64 4322 4325 4342 4345 Analogous contents as in registers 4306 4309 for the next archived event 65 4400 RW 0 1 Index 1 defining w
24. tes 43 21 7 32 bit float in the shape of 2 16 bit sequence of bytes 34 12 Particular bits define the readout way and the record of device registers 7654113210 bit0 3 O readout function fc 03 1 readout function fc 04 bit 4 7 0 record function fc 16 1 record function fc 06 10 4009 RW 1 64000s Scanning frequency 4010 4019 Configuration of archived parameters 11 4010 RW 0 32000 Safety code 12 4011 0 3 Operation code 0 read out of the element from the configuration table 1 record of the configuration table element 2 erasing of the configuration table element 3 erasing of all configuration table elements Operations with codes 1 2 3 require a correct code in the register 4010 continuation Table 2 Register Opera Range Item address tions unit Description 13 4012 RW 0 99 No of the configuration table element 14 4013 RW 0 1 Status 0 archiving disabled 1 archiving enabled 15 4014 RW 1 999 PD22 register address 16 4015 RW 0 3 Archiving condition O always 1 gt dn 2 dn change ldnl 17 4016 reserved 18 4017 RW 0 64000s Archiving frequency 19 4018 RW High dn highest part of dn data to the archiving condition dn data of float type 20 4019 RW Low dn lowest part of dn data to the archiving condition Configuration of archiv
25. user to obtain information about the device type status and configuration depending on this Example Address Function Checksum 11 11 DE Answer LRC The field Device identifier in the answer frame means the unique iden tifier of this class of devices however the other fields include parame ters depended on this function Example concer ning the PD21 concentrator Slave Function Number Device Device Checksum address of bytes identifier state 11 11 2 OxAB FF 16 6 ERROR CODES When the master device is transmitting a demand to the slave device then except for messages in the broadcast mode it expects a correct answer After transmitting the demand of the master unit one of the four possibilities can occur e If the slave unit receives the demand without a transmission error and can execute it correctly then it returns a correct answer e If the slave unit does not receive the demand no answer is returned Timeout conditions for the demand will be fulfilled in the master device program e If the slave unit receives the demand but with transmission errors even parity error checking sum LRC or CRC error no answer is returned Timeout condition for the demand will be fulfilled in the master device program e f the slave unit receives the demand without a transmission error but cannot execute it correctly e g if the demand is the readout of a non existent bit o
26. utput or register then it returns the answer including the error code informing the master device about the error reason A message with an incorrect answer includes two fields distinguishing it from the correct answer The function code field In the correct answer the slave unit retransmits the function code from the demand message in the field of the answer function code All fun ction codes have the most significant bit MSB equal zero code values are under 80h In the incorrect answer the slave unit sets up the MSB bit of the function code at 1 This causes that the function code value in the incorrect answer is exactly of 80h greater than it would be in a correct answer On the base of the function code with a set up MSB bit the program of the master device can recognize an incorrect answer and can check the error code on the data field 17 The data field In a correct answer the slave device can return data to the data field certain wer the nformation required by the master unit In the incorrect ans slave unit returns the error code to the data field It defines conditions of the slave device that had produced the error An exam ple considering a demand of a master device and the incor rect answer of the slave unit has been shown below Data are in the hexadec imal shape Example demand Slave Edi Variable address Number of variables unction Checksu
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