PMI-8I - BD Simex
Contents
1. 24 bit long and can be read and cleared by user at any time Standard functions of MODBUS RTU protocol make internal registers like address device ID counters content etc accessible via RS 485 interface 3 TECHNICAL DATA Power supply voltage 16 24 30 Vpc External fuse required T type max 1A Current consumption 20 mA typically Number of independent inputs 8 Input levels low state OV high state 24 V min 8 V User manual for multi counter module PMI 8I Minimum duration of LOW and HIGH state Counters capacity Galvanic isolation Communication interface Baud rate Number of modules in 1 network Data memory Protection level Housing type Housing dimensions L x W x D Operating temperature Storage temperature Humidity Altitude Screws tightening max torque Max connection leads diameter EMC N Pd e NN gt P Ba A T H 4 DEVICE INSTALLATION 50 us 4 294 967 295 32 bits All inputs are galvanically isolated from module supply and RS 485 interface RS 485 8N1 Modbus RTU 1200 115200 bit sec maximum 128 non volatile memory EEPROM type IP 20 housing and connection clips DIN rail mounted 35 mm rail 101 x 22 5 x 80 mm 0 C to 50 C 10 C to 70 C 5 to 90 96 no condensation up to 2000 meters above sea level 0 5 Nm 2 5 mm according to PN EN 61326 1 This is a class A unit In housing or a similar area it can cause radio frequency inte2. 0000h to register 04h 12 User manual for multi counter module PMI 8I 7 Reading a number of registries counter s 1 2 3 content in one frame ADDR FUNC REGHL COUNTHL CRC LH 01 03 00 01 00 06 94 0B The answer during normal counting ADDR FUNC BYTE DATA H1 L1 CRC LH 01 03 0C 00 00 00 00 00 04 36 01 03 4E 17 6B 48 Interpretation of the answer Counter s 1 content 000000h 0 decimal Counter s 2 content 043601h 275969 decimal Counter s content 034E17h 216599 decimal fe 1 ha PA hv HEr counter no 2 counter no 1 counter no 3 There is no full implementation of the Modbus Protocol in the device The functions presented above are available only 13 14 User manual for multi counter module PMI 8I User manual for multi counter module PMI 8I 15 a division of BD SENSORS BD Sensors GmbH BD Sensors StraBe 1 95199 Thierstein Germany Telefon 49 0 9235 9811 2099 Telefax 49 0 9235 9811 860 e mail info bdsimex de www bdsimex de 04 2010
3. 1h can be read only as single registers Contents of particular counters can be cleared at any time It is possible to clear single counter see example 6 and all counters simultaneously see examples 4 and 5 To clear single counter user shout write value 0000h to any register corresponding to that counter This operation clears whole counter regardless of storing to higher or lower part of the counter To clear all counters simultaneously user should write value 000h to register 11h Operation of the module is signalised by flashing green LED localised on front panel and marked RUN Flasher of red LED marked Tx ERROR signalize that some data is being transmitted via RS 485 interface While power off current states of counters filter state and device address are stored into EEPROM memory After power on these values are restored and counters continue count from value stored while power off Forcing of OxFF address New devices has set to Modbus addresses OxFE To enhance system installation process special operation mode has been developed It allows to force address OxFF in single module using internal momentary switch mounted on module mainboard Figure 4 1 User manual for multi counter module PMI 8I To change address of the device to FFh wait for a moment after power up until green LED RUN starts flashes Next press and hold push button about 4 seconds until green LED will lights permanently then release push button The devic
4. BDI SIME a division of BD SENSORS USER MANUAL for multi counter module type PMI 8I firmware version 2 0 or higher Ce 01 07 2009 V 1 05 Read the user s manual carefully before starting to use the unit Producer reserves the right to implement changes without prior notice User manual for multi counter module PMI 8I CONTENTS 1 BASIC REQUIREMENTS AND USER ER egeeegeggeeeegdEeedeg e gege 3 2 GENERAL CHARACTERISTIES se 3 3 3 4 DEVICE INSTALLATION sene 4 Be MIN PIN C 5 IL OIN F zpggam E 5 LION MAIN TE NANCE HC 7 ENEE 7 6 THE MODBUS PROTOCOL HANDLING saa 9 ER EE EE 9 6 2 TRANSMISSION ERRORS RTE E RE 10 6 3 EXAMPLES OF QUERY ANSWER FRAMES Lane ntt ea to E orina aun erasa nte 11 Explanation of symbols used in the manual AN This symbol denotes especially important guidelines concerning the installation and M operation of the device Not complying with the guidelines denoted by this symbol may cause an accident damage or equipment destruction IF THE DEVICE IS NOT USED ACCORDING TO THE MANUAL THE USER IS RESPONSIBLE FOR POSSIBLE DAMAGES WR This symbol denotes especially important characteristics of the unit Read any 1 j information regarding this symbol carefully User manu
5. NC REG H L DATA H L CRC L H 01 06 00 20 00 02 09 C1 1 3 Reading of lower word of counter 4 User manual for multi counter module PMI 8I ADDR FUNC REG H L COUNT H L CRC L H 01 03 00 08 00 01 05 C8 The answer ADDR FUNC BYTE DATA HL CRC L H 01 03 02 E4 1D 33 4D DATA H L counter s no 4 content equals E41Dh 58397 4 Simultaneous zeroing of all counters in all PMI 8l modules connected to the network ADDR FUNC REG H L COUNT H L CRC L H 00 06 00 11 00 00 D8 1E The answer Device doesn t send the answer because of 00h value in the address field BROADCAST type message 5 Simultaneous zeroing of all counters in PMI 8l with address 01h ADDR FUNC REG H L COUNT H L CRC 01 06 00 11 00 00 D9 CF The answer the same as the message ADDR FUNC REG H L COUNT H L CRC 01 06 00 11 00 00 D9 CF 6 Zeroing of counter no 2 in PMI 8l module with address 01h ADDR FUNC REG H L COUNT H L CRC 01 06 00 03 00 00 79 CA The answer the same as the message ADDR FUNC REG H L COUNT H L CRC 01 06 00 03 00 00 79 CA In the result of that query counter no 2 will be zeroed The same result can be obtained by writing
6. al for multi counter module PMI 8I 1 BASIC REQUIREMENTS AND USER SAFETY The manufacturer is not responsible for any damages caused by inappropriate installation not maintaining the proper technical condition and using the unit against its destination Installation should be conducted by qualified personnel During installation all available safety requirements should be considered The fitter is responsible for executing the installation according to this manual local safety and EMC regulations The unit must be properly set up according to the application Incorrect configuration can cause defective operation which can lead to unit damage or an accident If in the case of a defect of unit operation there is a risk of a serious threat to the safety of people or property additional independent systems and solutions to prevent such a threat must be used Neighbouring and mating equipment must meet the requirements of appropriate standards and regulations concerning safety and be equipped with adequate anti overvoltage and anti interference filters Do not attempt to disassemble repair or modify the unit yourself The unit has no user serviceable parts Units in which a defect was stated must be disconnected and submitted for repairs at an authorized service centre 2 GENERAL CHARACTERISTICS Multi counters module PMI 8l allows independent counting of pulses delivered to 8 isolated binary inputs All counters are
7. dbus RTU specification Maximum group size for O3h and 10h functions cannot exceeds 16 registers for single frame fe 1 The device interprets the broadcast messages but then do not sends the answers v 6 1 LIST OF REGISTERS Register Write Range Register description 01h No 0000 00FFh Higher byte of counter corresponding to input 1 02h No 0000 FFFFh Lower word of counter corresponding to input 1 03h No 0000 00FFh Higher byte of counter corresponding to input 2 04h No 0000 FFFFh Lower word of counter corresponding to input 2 05h No 0000 00FFh Higher byte of counter corresponding to input 06h No 0000 FFFFh Lower word of counter corresponding to input 07h No 0000 00FFh Higher byte of counter corresponding to input 4 08h No 0000 FFFFh Lower word of counter corresponding to input 4 09h No 0000 00FFh Higher byte of counter corresponding to input 5 User manual for multi counter module PMI 8I Register Write Range Register description OAh No 0000 FFFFh Lower word of counter corresponding to input 5 OBH No 0000 00FFh Higher byte of counter corresponding to input 6 OCh No 0000 FFFFh Lower word of counter corresponding to input 6 ODh No 0000 00FFh Higher byte of counter corresponding to input 7 OEh No 0000 FFFFh Lower word of c
8. e changes its MODBUS address to FFh and waits for a new address readdressing Green LED RUN stay permanently on until readdressing via RS 485 or power off While module is in this state it is possible to control its inputs and communication is possible using temporal address FFh At this moment MASTER controller should find new device and readdress it to address other than OxFF and OxFE After remote readdressing green LED indicator starts to flashes again Simultaneously with change of device address baud rate is changed to 9600 bit sec Required transmission speed 1200 bit sec to 115200 bit sec can be set by write to register 22h After change of transmission speed the device sends the answer with new baud rate While installation of the new network it is recommended to readdress all devices using baud rate 9600 bit sec and next change speed of all devices simultaneously using BROADCAST query with address OOh 6 THE MODBUS PROTOCOL HANDLING Transmission parameters 1 start bit 8 data bits 1 stop bit no parity control Baud rate selectable from 1200 to 115200 bits sec Transmission protocol MODBUS RTU compatible The device parameters and display value are available via RS 485 interface as HOLDING type registers numeric values are given in U2 code of Modbus RTU protocol The registers or groups of the registers can be read by 03h function and wrote by O6h single registers or 10h group of the registers accordingly to Mo
9. er manual for multi counter module PMI 8I 4 3 MAINTENANCE The unit does not have any internal replaceable or adjustable components available to the user Pay attention to the ambient temperature in the room where the unit is operating Excessively high temperatures cause faster ageing of the internal components and shorten the fault free time of unit operation In cases where the unit gets dirty do not clean with solvents For cleaning use warm water with small amount of detergent or in the case of more significant contamination ethyl or isopropyl alcohol aN N Using any other agents can cause permanent damage to the housing FO 0X Product marked with this symbol should not be placed in municipal waste Please check local regulations for disposal and electronic products 5 PRINCIPLE OF OPERATION Multi counter module PMI 8l allows independent counting of pulses delivered to its binary inputs All inputs are opto coupled from main power supply and RS 485 interface Occurrence of HIGH state on particular input is signalised by green LEDs marked IN1 to IN8 Figure 4 1 Incrementation of counter occurs after falling edge on particular input input state changes from HIGH to LOW a to 0H b to t4 he oscillations Figure 5 1 The traces of signals a without contacts oscillations b with contacts oscillations User manual for multi counter module PMI 8I It is essential that pulses have fulfil some time restr
10. f the screened cable In the case of magnetically induced interference the use of twisted couples of signal cables so called spirals is recommended The spiral best if shielded must be used with RS 485 serial transmission connections User manual for multi counter module PMI 8I In the case of interference from the power supply side the use of appropriate anti interference filters is recommended Bear in mind that the connection between the filter and the unit should be as short as possible and the metal housing of the filter must be connected to the earthing with largest possible surface The cables connected to the filter output must not run in parallel with cables with interference e g circuits controlling relays or contactors External powers supply must be connected to the module Uz Uz typically 24 Vpc and two wires RS 485 A B communication interface Inputs are placed on bottom side of the module see Figure 4 1 power supply RS 485 power supply 24V DC SLAVE ground 3 tt d UZ A B Uz force address OxFF swich is available through this hole IN1 IN8 inputs ground voltage inputs 0 24V mm mm front view bottom view Figure 4 1 Terminals description AN e When use of SMPS it is strongly recommended to connect PE wire P e All connections must be made while power supply is disconnected max 2 mm Figure 4 2 Method of cable insulation replacing and cable terminals Us
11. ictions see Figure 5 1 These restrictions depend on settings of internal digital filter implemented in firmware Filter allows to eliminate signal oscillations corresponding to contacts bouncing of mechanical sensors Filter is factory switched off To ensure proper counting it means that counter do not omit any pulse while filter is on duration of LOW to and HIGH t states must be not shorter than Fx50 us where F means filter setting While filter is off then to and ti must be not shorter than 125 is See the table below Tab 5 1 to check proper periods for all frequencies filter setting F tot p e Geen Input type 0 electronic input 1 electronic 255 12 75 ms 40 Hz or contact input Tab 5 1 Time periods to t depend on filtered frequency Every counter can counts up to 4 294 967 295 pulses 32 bits of data After that value counters start count from 0 Current states of particular counters are available in related with them registers and can be read via RS 485 interface see LIST OF REGISTERS Every register is two bytes long so it is necessary to read two successive registers to get content of single counter It is possible to read single registers as well as multi registers in single Modbus query While multi register reading it is important to read values concatenate in proper pairs to complete counters states see example 7 Multi register readings are possible only for registers 01h to 10h Other registers 12h i 2
12. ister then the device sends an error code according to Modbus RTU specifications Error codes 01h illegal function only functions 03h and O6h are available 02h illegal register address 03h illegal data value 10 User manual for multi counter module PMI 8I 6 3 EXAMPLES OF QUERY ANSWER FRAMES Examples apply for device with address 1 All values are represent hexadecimal Field description ADDR Device address on modbus network FUNC Function code REG H L Starting address address of first register to read write Hi and Lo byte COUNT H L No of registers to read write Hi and Lo byte BYTEC Data byte count in answer frame DATA H L Data byte Hi and Lo byte CRC L H CRC error check Hi and Lo byte fe In further part of the instruction particular counters are called by numbers 1 corresponding to numbers of terminals of their inputs For example counter no 2 counts pulses from input 2 1 Read of device ID code ADDR FUNC REG H L COUNT H L CRC L H 01 03 00 21 00 01 D4 00 The answer ADDR FUNC BYTEC DATA CRC L H 01 03 02 00 94 B9 EB DATA identification code 0094h 2 Change of the device address from 1 to 2 write to reg 20h ADDR FUNC REG H L DATA H L CRC L H 01 06 00 20 00 02 09 C1 DATA H 0 DATA L new device address 2 The answer the same as the message ADDR FU
13. ons Wiring must meet appropriate standards and local regulations and laws In order to secure against accidental short circuit the connection cables must be terminated with appropriate insulated cable tips Tighten the clamping screws The recommended tightening torque is 0 5 Nm Loose screws can cause fire or defective operation Over tightening can lead to damaging the connections inside the units and breaking the thread In the case of the unit being fitted with separable clamps they should be inserted into appropriate connectors in the unit even if they are not used for any connections Unused clamps marked as n c must not be used for connecting any connecting cables e g as bridges because this can cause damage to the equipment or electric shock Due to possible significant interference in industrial installations appropriate measures assuring correct operation of the unit must be applied To avoid the unit of improper indications keep recommendations listed below Avoid common parallel leading of signal cables and transmission cables together with power supply cables and cables controlling induction loads e g contactors Such cables should cross at a right angle Contactor coils and induction loads should be equipped with anti interference protection systems e g RC type Use of screened signal cables is recommended Signal cable screens should be connected to the earthing only at one of the ends o
14. ounter corresponding to input 7 OFh No 0000 00FFh Higher byte of counter corresponding to input 8 10h No 0000 FFFFh Lower word of counter corresponding to input 8 41h Vad 0000h Simultaneous zeroing of all counters This register is write only Denouncing Filter state 0 disabled 1 filter setting F ER Yes NEED Input frequency equals 1 F x 100 us 13h Yes 0 255 Current binary state of inputs 20h Yes 1 FFh Device address New devices has default address FEh 21h No 0094h Device identification code ID Doh Yes 0 7 Baud rate bit sec 0 1200 1 2400 2 4800 3 9600 4 19200 5 38400 6 57600 7 115200 Firmware version hexadecimal rarer SEE e g value 0123h means version 1 23 higher byte of this register is always set to 00h itis possible to write value 0000h zeroing of single counter after writing to register no 20h the device responds with an old address in the message after writing to register no 22h the device responds with the new baud rate Aa UO N on If register 20h is being written it is possible to use BROADCAST frame j with address 00 This operation causes changing of addresses of all modules connected to the RS 485 network Modules receive and interprets BROADCAST frames but do not transmit answers N 6 2 TRANSMISSION ERRORS DESCRIPTION If an error occurs while write or read of single reg
15. rference In such cases the user can be requested to use appropriate preventive measures The unit has been designed and manufactured in a way assuring a high level of user safety and resistance to interference occurring in a typical industrial environment In order to take full advantage of these characteristics installation of the unit must be conducted correctly and according to the local regulations Read the basic safety requirements on page 3 prior to starting the installation Ensure that the power supply network voltage corresponds to the nominal voltage stated on the unit s identification label The load must correspond to the requirements listed in the technical data All installation works must be conducted with a disconnected power supply User manual for multi counter module PMI 8I 4 1 UNPACKING After removing the unit from the protective packaging check for transportation damage Any transportation damage must be immediately reported to the carrier Also write down the unit serial number on the housing and report the damage to the manufacturer Attached with the unit please find user s manual warranty 4 2 CONNECTION METHOD Caution AN Installation should be conducted by qualified personnel During installation all e available safety requirements should be considered The fitter is responsible for mmh executing the installation according to this manual local safety and EMC regulati
Download Pdf Manuals
Related Search