Comet 5-30 kva J-BUS. Installation and user manual. MGE UPS SYSTEMS D E V I P R O W E R P O L E I B U P T E R R N T N I E U T H

Transcription

1 fault Comet 5-30 kva J-BUS XM1 XM2 Installation and user manual!! C o m e t P O W E R P R O V I D E R L E I B E R R U P T N T N I E U T H

2 Dear User, This manual has been designed to provide you with all the information you need to install and use your J-BUS communications system. Feel free to contact us for any further information you may require concerning special applications beyond the scope of this manual. 0 Installing and using the Comet J-BUS option: E XT/EC

3 Contents Delivery Checks Storage Safety recommendations Description of the RS485 board General overview Function Position of jumpers Description of the RS232 board General overview Function Position of jumpers Configuring the RS485 and RS232 boards Configuring the transmission speed (jumpers D4 and D5) Configuring the transmission format (jumpers D6 and D7) Installation/removal RS485 interface diagram Connection Important warning Powering down Comet Installing the board Powering up Comet Polarity Termination RS485 board interface RS232 board interface J-BUS protocol Introduction Principle Synchronizing data exchanges Description of request and response frames Checking received messages on the slave side Functions CRC 16 algorithm Installing and using the Comet J-BUS option: E XT/EC 1

4 Contents (cont.) Comet System information Block diagram Measured quantities Main status bits (UPS operating information) Operating modes Message format Example of read data array commands sent by the terminal List of variable fields General definitions Tables of measured data Tables of binary data Glossary of information descriptors All Comet products are protected by patents. They implement original MGE UPS SYSTEMS technology not available to other manufacturers. Due to evolving standards and technology, products may be modified without notice. Indications concerning technical characteristics and dimensions are not binding unless confirmed by. This document may be copied only with the prior written consent of. Authorized copies must be marked: "Comet J-BUS Installation and User Manual n XT". 2 Installing and using the Comet J-BUS option: E XT/EC

5 Delivery Checks Storage This optional system comprises the following elements: an installation and user manual for the J-BUS communications system; an RS485 n or RS232 n interface board. If the option must be stored prior to installation, leave your RS485 or RS232 interface board in its original packaging in a dry location: storage temperature: -40 to +70 C. Safety recommendations If you encounter a problem while following the instructions in this manual, we recommend that you contact our after-sales support service. On request, our after-sales support personnel can carry out the complete installation of your equipment. It is imperative that the instructions in this manual be followed strictly. Not adhering to these instructions may endanger personnel, result in damage to the Comet and render the manufacturer s warranty void. All repair or maintanance operations must be carried out by our after-sales support personnel. For more information on the Comet UPS, please refer to its "Installation and user manual". The J-BUS option may be installed and operated by any person as long as the indications presented in this manual are complied with. Installing and using the Comet J-BUS option: E XT/EC 1.1

6 1.2 Installing and using the Comet J-BUS option: E XT/EC

7 Description of the RS485 board General overview XM1 XM2 A Fig.1 Function The RS485 communications board enables data concerning Comet s operating status to be sent to a computer. The J-BUS hexadecimal communications protocol is used in slave mode. The system provides a communications channel with an RS485 interface. Position of jumpers The D2 and D3 jumpers on the board must be positioned as in figure 2. Blow-up A of figure 1 Note: the other customization elements (J-BUS address) are set. Refer to the after-sales support department for more information. OFF ON XM5 XM3 XM4 D2 D3 Fig.2 Installing and using the Comet J-BUS option: E XT/EC 2.1

8 2.2 Installing and using the Comet J-BUS option: E XT/EC

9 Description of the RS232 board General overview B XM1 XM2 RS 232C A Fig.3 Function The RS232 communications board enables data concerning the Comet s operating status to be sent to a computer. The communications protocol used is hexadecimal J-BUS in slave mode. The system provides a communications channel equipped with a V24 interface (RS232). Position of jumpers Before to install the RS232 board, check that the position of jumpers D2, D3 (see detailed view A of figure 3), and D1, D8 (see detailed view B of figure 3) on the RS232 board conforms to figure 4 below: detailed view A of figure 3 detailed view B of figure 3 OFF XM5 XM7 XM6 ON XM3 XM4 D2 D3 D4 D5 D6 D7 D8 D1 Fig.4 Note: the other customization elements (J-BUS address) are set. Refer to the after-sales support department for more information. Installing and using the Comet J-BUS option: E XT/EC 3.1

10 3.2 Installing and using the Comet J-BUS option: E XT/EC

11 Configuring the RS485 and RS232 boards Configuring the transmission speed (jumpers D4 and D5) Blow-up A of figures 1 or 3 OFF ON XM5 XM3 XM4 OFF ON XM5 XM3 XM baud 2400 baud OFF ON XM5 XM3 XM4 OFF ON XM5 XM3 XM4 D6 D7 D6 D7 D4 D5 D4 D5 OFF ON XM5 XM3 XM4 OFF ON XM5 XM3 XM4 D4 D5 D4 D baud 9600 baud Fig.5 Configuring the transmission format (jumpers D6 and D7) Blow-up A of figures 1 or 3 8 bits, no parity and 1 stop bit 8 bits, even parity and 1 stop bit Fig.6 Installing and using the Comet J-BUS option: E XT/EC 4.1

12 4.2 Installing and using the Comet J-BUS option: E XT/EC

13 Installation/removal Important warning Powering down Comet Inverter shutdown Manual by-pass Board and/or communication cables installation/removal must be carried out precisely as described below to ensure protection of life and property and the continuous supply of power to the load connected to the Comet. During the installation/removal, the load is supplied by the mains via the static bypass and the inverter 7 is shut down (i.e. the load is not protected). Ensure that the communications cables are not installed near the power cables. Note: the point numbers refer to information contained in the Comet "Installation and user manual". Powering down is obligatory to avoid any danger during operations in the boards and/or communication cables area (installation and configuration). press the "inverter off" button 23 for three seconds (see figure 7): the inverter 7 shuts down if the transfer conditions are correct, the "load protected" light 21 goes off, the "load not protected" light 18 goes on, the load is supplied by the mains via the "static bypass" 3. open the input power switch 1 ; open the battery circuit breaker 4 : all indicating lights go off; Caution: load circuits remain live during the entire installation procedure; turn the manual by-pass switch as indicated in figure 8 from the "NORMAL" position to the "BY-PASS" position. Note: the TEST 1 and TEST 2 positions are reserved for the after-sales support personnel; leave the switch set to the "BY-PASS" position during installation/removal of the option. Fig.7!! + - I Note: if the transfer conditions are not correct, it is nonetheless possible to force inverter shutdown, however the supply of power to the load will be interrupted for 0.5 seconds. Consult the "Alarms" section in the Comet "Installation and user manual". 8 Manual by-pass switch NORMAL Fig.8 BY-PASS TEST 2 TEST 1 Installing and using the Comet J-BUS option: E XT/EC 5.1

14 Installation/removal (cont.) Installing the board Before proceeding further, ensure that the recommendations in the preceding sections have been followed (the Comet has been powered down). To locate the Comet s communications ports 11, for board installation, refer to the table in figure 9, or consult the Comet Installation and user manual under the section "Introduction to Comet". The Comet can be equipped with up to three optional boards and it is immaterial which slot is used by a board. Comet model Series 11 Series 31 Series 33 Fig.9 Access to the board Comet rear panel Comet front panel Installing the board insert horizontally into grooves inserted vertically into grooves Note: the model and output level are marked on the Comet identification plate and on the configuration sheet enclosed with the Comet Installation and user manual. Installing the board on the Comet series 11 and series 31 (see figure 10) remove the rear blanking cover 42 (communications ports 11 section) by unscrewing the two screws; slide the board (affixed to the new cover) into the grooves; secure the new cover using the two screws; proceed with connections. 42 Fig Installing and using the Comet J-BUS option: E XT/EC

15 Installing the board on the Comet series 33 Comet series 33 10/15 kva (see figure 11) open the front door; remove lower panel 43 by unscrewing the six screws; remove screw 44 securing the communications board support plate; lift the communications board support plate to access the optional communications port positions 11, remove cover 42 by unscrewing the two screws, slide the board RS232 or RS485 into the grooves, tighten the board in position using the two fixing screws, make connections; refit the communications board support plate and tighten screw 44 ; run the connection cables through the duct 45 ; put the lower panel 43 back in place and tighten the screws; close and lock the door Fig.11 Installing and using the Comet J-BUS option: E XT/EC 5.3

16 Installation/removal (cont.) Installing the board on the Comet series 33 (cont.) Comet series 33 20/30 kva (see figure 12) open the front door; remove lower panel 43 by unscrewing the five screws; remove screw 44 securing the communications board support plate; open the communications board support plate to the left to access the optional communications port positions 11, remove cover 42 by unscrewing the two screws, slide the board J-BUS into the grooves, tighten the board in position using the two screws, make connections; reposition the communications board support plate and tighten screw 44 ; run the connection cables through the duct 48 ; put the lower panel 43 back in place and tighten the fixing screws; close and lock the door Fig Installing and using the Comet J-BUS option: E XT/EC

17 Powering up Comet The system must be powered up following installation and connection of the option board and prior to any tests: turn the manual by-pass switch as indicated in figure 13 from the "BY-PASS" position to the "NORMAL" position; Note: the TEST 1 and TEST 2 positions are reserved for after-sales support personnel. 8 Manual by-pass switch NORMAL BY-PASS TEST 1 TEST 2 Fig.13 close the input power switch 1 ; close the battery circuit breaker 4 ; after a few seconds, the green "load protected" light 21 goes on (see figure 14), indicating that the Comet system is operating normally. Note: press the green "inverter on" button 22 if the system is set to "manual restart" mode.!! + - I Fig.14 Installing and using the Comet J-BUS option: E XT/EC 5.5

18 5.6 Installing and using the Comet J-BUS option: E XT/EC

19 RS485 interface diagram For proper operation, the polarity of EIA RS485 2-wire and 4-wire lines must be set at only one point and the lines terminated at the end. This principle is illustrated by figure 15 (2-wire topology) and by figure 16 (4-wire topology). Diagram of a 2-wire inter-cubicle interface Rp 5V Rp 5V Rp 5V polarity 2 2 Ra connection if end of the line L- L- 3 Ra 4 5 L- L- 3 Ra termination 4 5 connection if end of the line L+ L+ 7 L+ L+ 7 termination polarity Rp Rp Rp 0V 0V 0V transmit / receive data Master unit Fig.15 transmit / receive data Board of an intermediate cubicle (see fig.18-d) transmit / receive data Board of an end-of-line cubicle (see fig.18-c) Installing and using the Comet J-BUS option: E XT/EC 6.1

20 RS485 interface diagram (cont.) Diagram of a 4-wire inter-cubicle connection Rp 5V master transmitter Rp 5V slave receiver Rp 5V slave receiver polarity 2 2 T- R- R- R termination 4 Ra Ra 7 7 termination polarity T+ R+ 6 8 R+ R+ 6 8 Rp Rp Rp 0V transmit data 0V receive data 0V receive data 5V Rp master receiver slave transmitter slave transmitter connection if end of the line R- T- 5 T- T- 5 Ra connection if end of the line R+ T+ 9 T+ T+ 9 Rp 0V receive data transmit data transmit data Master unit Board of an intermediate cubicle (see fig.19-d) Board of an end-of-line cubicle (see fig.19-c) Fig Installing and using the Comet J-BUS option: E XT/EC

21 Connection Polarity Normally, the master of the network sets the polarity of the line (Rp resistors). Termination The two ends of the line must be terminated (Ra resistors). Allow for 1 or 2 terminators to avoid mismatching the line when any equipment at the end of the line is disconnected. RS485 board interface (figure 17) 0 V 0 V 5 V Rp Rp Ra RD = (A') RD = (B') TD = (A) Female 9 pin SUB-D connector TD = (B) 5 RS485 board Fig.17 Installing and using the Comet J-BUS option: E XT/EC 7.1

22 Connection (cont.) The polarity and / or termination must be handled via jumpers in the connection cable s male connector (see figures 18 and 19 for examples). 2-wire RS485 interface: figure 18A: interface with polarity and with termination, figure 18B: interface with polarity and without termination, figure 18C: interface without polarity and with termination, figure 18D: interface without polarity and without termination L+ L- 5 9 L+ L- 5 9 L+ L- 5 9 L+ L- - A - - B - - C - - D - Fig.18 4-wire RS485 interface: figure 19A: interface with polarity and with termination, figure 19B: interface with polarity and without termination, figure 19C: interface without polarity and with termination, figure 19D: interface without polarity and without termination R+ R- T+ T R+ R- T+ T R+ R- T+ T R+ R- T+ T- - A - - B - - C - - D - Fig Installing and using the Comet J-BUS option: E XT/EC

23 RS232 board interface (figure 20) RS232 board Female 9 pin SUB-D connector RXD receive data TXD SG transmit data signal ground Fig.20 Shielded, twisted cable is recommended. Installing and using the Comet J-BUS option: E XT/EC 7.3

24 7.4 Installing and using the Comet J-BUS option: E XT/EC

25 J-BUS protocol Introduction The J-BUS protocol can be used to read or write one or more bits or words. In the interest of simplicity, this document describes only the procedures necessary for operation and monitoring of the Comet UPS. Communications are initiated by the master and include a request from the master and a response from the slave. request Master response Slave Slave Slave Master requests must be addressed to one specific slave (identified by its number in the first byte of the request frame) as is shown in the diagram below: MASTER request Wait Response analysis and preparation of next exchange request Wait SLAVE 1 to slave 1 response to slave N request processing SLAVE N response PHYSICAL MEDIA Exchange i Exchange i+1 Installing and using the Comet J-BUS option: E XT/EC 8.1

26 J-BUS protocol (cont.) Principle A full understanding of the protocol is only required if the master is a computer that must be programmed. All communications include 2 messages: a request from the master and a response from the slave. Each message or frame contains 4 types of information: slave address (1 byte). The slave address specifies the destination station. If zero, the request addresses all slaves and there is no response message (in which case it is a broadcast message, a function not used in this application). The slave number following the number assigned to the Comet is reserved for maintenance purposes. For example, if the Comet has been designated slave "1", then the number "2" cannot be used ; function code (1 byte). Selects a command (e.g. read or write a bit or a word) and checks that the response is correct. The J-BUS protocol comprisses 10 functions of which 3 may be used in this application: function 3 (read n output or internal words), or function 4 (read n input words), or function 16 (write n words); information field (n bytes). The information field contains the parameters related to the functions: bit addresses, word address, bit value, word value, number of bits, number of words; check word (2 bytes). A word used to detect transmission errors. Synchronizing data exchanges Any character received after 3 or more character lengths of silence is interpreted as the start of a frame. Therefore, a minimum silence of 3 character lengths between frames must be respected. 8.2 Installing and using the Comet J-BUS option: E XT/EC

27 Description of request and response frames request information requested: bit/word address, bit/word value, bit/word number. 1 byte 1 byte 2 bytes slave adress (1 à FF) function code information check word This function code selects one of 10 possible commands: - Function 1 : read n output or internal bits - Function 2 : read n input bits - Function 3 : read n output or internal words - Function 4 : read n input words - Function 5 : write one bit - Function 6 : write one word - Function 8 : data exchange diagnostics - Function 11 : read event counter - Function 15 : write n bits - Function 16 : write n words N bytes When the message is received, the slave reads the check word and accepts or refuses the message response values of bits or words read values of bits or words written number of bits or words slave adress (1 à FF) function code data CRC check word 1 byte 1 byte n bytes 2 bytes Installing and using the Comet J-BUS option: E XT/EC 8.3

28 J-BUS protocol (cont.) Checking received messages on the slave side After the master sends a request containing the slave address, the function code and data, it computes the CRC and sends it as the check word (CRC 16). When the slave receives the request, it stores the message in memory and calculates the CRC 16 to compare it to the received CRC 16. slave master slave address function data CRC 16 CRC 16 computation CRC 16 comparison If the message is incorrect (unequal CRC 16 values), the slave does not respond. If the message received is correct but the slave is unable to process it (incorrect address, incorrect data, etc.), the slave returns an error message with the following contents: response function code received and MS bit = 1 Error codes: 1. Unknown function code 2. Incorrect address 3. Incorrect data 4. Station not ready 8. Write error 9. Field overlap errors handled by the communication port slave address (1 à FF) 1 CRC 16 1 byte 1 byte 1 byte 2 bytes example H DD CB request H response 8.4 Installing and using the Comet J-BUS option: E XT/EC

29 Functions Functions 1 and 2: read n bits function 1: read output or internal bits; function 2: read input bits. The number of bits must be less than or equal to the bit field size (see memory board). request address of slave address 1 or 2 number of bits first bit CRC 16 to read MSB LSB 1 byte 1 byte 2 bytes 2 bytes 2 bytes response number of first last slave address 1 or 2 bytes byte byte CRC 16 read read read 1 byte 1 byte 1 byte N bytes 2 bytes byte detail: last bit transmitted first bit transmitted Unused bits are set to zero request: example Reading bits at location 410 to 417 of slave at address 20H (charger signals) E9 FC response: B CA (binary values) Installing and using the Comet J-BUS option: E XT/EC 8.5

30 J-BUS protocol (cont.) Functions 3 and 4: read n words The number of words must be less than or equal to the word field size (see memory board). function 3: read output or internal words; function 4: read input words. request slave address 3 or 4 adress of first bit MSB LSB number of words MSB LSB CRC 16 1 byte 1 byte 2 bytes 2 bytes 2 bytes response number of slave address 3 or 4 first word last word bytes read CRC 16 PF pf PF pf 1 byte 1 byte 1 byte 2 bytes 2 bytes 2 bytes example Reading words at location 90 to 99 of slave at address 28H (voltage fields) request: A A8 45 response: XXXX YYYY CRC 16 word 0090 word 009A 8.6 Installing and using the Comet J-BUS option: E XT/EC

31 Function 5: writing a bit request slave address 5 bit address bit value 0 CRC 16 1 byte 1 byte 2 bytes 1 byte 1 byte 2 bytes response bit set to 0 bit set to 1 write 0 write FF slave address 5 bit address bit value 0 CRC 16 In function 5 the response and request frames are identical. Function 6: writing a word request slave address 6 word address word CRC 16 1 byte 1 byte 2 bytes 2 bytes 2 bytes response slave address 6 word address word CRC 16 The response is echoed acknowledging that the word sent has been received. Installing and using the Comet J-BUS option: E XT/EC 8.7

32 J-BUS protocol (cont.) Function 8: reading error diagnosis counters Each slave manages a set of nine 16 bit counters for error diagnosis: - request / response: slave address 8 sub-function code data CRC 16 1 byte 1 byte 2 bytes 2 bytes 2 bytes - the slave must echo 00 XYZT the request - reset error 0A 0000 diagnosis counter - read the total number of: received frames with CRC error (CNT 1) 0B XXXX received frames with CRC error (CNT 2) 0C XXXX number of exception responses (CNT 3) 0D XXXX frames addressed to the station (CNT 4) 0E XXXX (not including broadcast) broadcast requests received (CNT 5) 0F XXXX number of NACK responses (CNT 6) 10 XXXX unit not ready responses (CNT 7) 11 XXXX illegal characters (CNT 8) 12 XXXX X, Y, Z, T are user defined (transmission parameters) requests: XXXX equals 0000 response: XXXX is the counter value 8.8 Installing and using the Comet J-BUS option: E XT/EC

33 Function 11: reading event counters The master and each slave have one event counter. This counter is incremented each time a frame is received and interpreted correctly by the slave (except for function 11 itself). A correctly transmitted message increments the counter. If the slave sends an exception response, the counter is not incremented. The master can read the counter to determine whether or not the slave correctly interpreted the command (incremented the counter or not). These functions can be used to diagnose the data exchange taking place between master and slaves. If the master counter equals the slave counter, the slave executed the command sent by the master. If the master counter is one higher than the slave counter, the slave did not execute the command sent by the master. request slave address 0B CRC 16 response slave address 0B 0 slave counter word CRC 16 1 byte 1 byte 2 bytes 2 bytes 2 bytes Installing and using the Comet J-BUS option: E XT/EC 8.9

34 J-BUS protocol (cont.) Function 15: writing n consecutive bits request address of number number slave adress 0F bit data CRC 16 the first bit of bits of bytes 1 byte 1 byte 2 bytes 2 bytes 1 byte N bytes 2 bytes réponse 2 X N 246 last bit of first byte first bit of first byte last bit of byte N first bit of byte N first byte N bytes response slave address 0F address of number of bits CRC 16 the first bit 1 byte 1 byte 2 bytes 2 bytes 2 bytes 1 X 1968 Note: if the slave address is 0, all units execute the write command without sending a response Installing and using the Comet J-BUS option: E XT/EC

35 Function 16: writing n consecutive words request slave address 10 (*) address of first word number of words number of bytes N data bytes CRC 16 1 byte 1 byte 2 bytes 2 bytes 1 byte N bytes 2 bytes 2 X N 246 MSB LSB MSB LSB MSB MSB LSB first word last word response slave address 10 (*) address of first word number of words written CRC 16 1 byte 1 byte 2 bytes 2 bytes 2 bytes Note: if the slave address is 0, all units execute the write command without sending a response example Writing words 00 and 01 of slave at address 20 (synchronization counter) (00) = 0000 (01) = 0000 request (*) C 93 response (*) (*) 10 H = 16 D Installing and using the Comet J-BUS option: E XT/EC 8.11

36 J-BUS protocol (cont.) CRC 16 algorithm Hex FFFF --> CRC 16 CRC 16 BYTE --> CRC 16 n = 0 CRC 16 shift to the right no remainder yes CRC 16 poly --> CRC 16 n = n+1 no n > 7 yes no following byte end of message yes = exclusive or n = number of data bits poly = CRC 16 polynomial = = $ A001 END If the CRC 16 is calculated using the above algorithm, the least significant byte is transmitted first Installing and using the Comet J-BUS option: E XT/EC

37 Example of a CRC computation CRC register initialization Shift of 1st character Shift Set flag to 1, polynomial Shift Set flag to 1, polynomial Shift Set flag to 0 Shift Shift Shift Shift Shift nd character Shift Shift Shift Shift Shift Shift Shift Shift byte byte Installing and using the Comet J-BUS option: E XT/EC 8.13

38 J-BUS protocol (cont.) Example of CRC 16 computation in "C" using table lookup #define CPH 0 /* most significant bytes */ #define CPL 1 /* least significant bytes */ /* TABLE OF MOST SIGNIFICANT BYTES FOR CRC 16 COMPUTATION */ char tbcrch [ ] = { 0,193,129,64,1,192,128,65,1,192,128,65,0,193,129,64, 1,192,128,65,0,193,129,64,0,193,129,64,1,192,128,65, 1,192,128,65,0,193,129,64,0,193,129,64,1,192,128,65, 0,193,129,64,1,192,128,65,1,192,128,65,0,193,129,64, 1,192,128,65,0,193,129,64,0,193,129,64,1,192,128,65, 0,193,129,64,1,192,128,65,1,192,128,65,0,193,129,64, 0,193,129,64,1,192,128,65,1,192,128,65,0,193,129,64, 1,192,128,65,0,193,129,64,0,193,129,64,1,192,128,65, 1,192,128,65,0,193,129,64,0,193,129,64,1,192,128,65, 0,193,129,64,1,192,128,65,1,192,128,65,0,193,129,64, 0,193,129,64,1,192,128,65,1,192,128,65,0,193,129,64, 1,192,128,65,0,193,129,64,0,193,129,64,1,192,128,65, 0,193,129,64,1,192,128,65,1,192,128,65,0,193,129,64, 1,192,128,65,0,193,129,64,0,193,129,64,1,192,128,65, 1,192,128,65,0,193,129,64,0,193,129,64,1,192,128,65, 0,193,129,64,1,192,128,65,1,192,128,65,0,193,129,64, }; /* TABLE OF LEAST SIGNIFICANT BYTES FOR CRC 16 COMPUTATION */ char tbcrcl [ ] = { 0,192,193,1,195,3,2,194,198,6,7,199,5,197,196,4, 204,12,13,205,15,207,206,14,10,202,203,11,201,9,8,200, 216,24,25,217,27,219,218,26,30,222,223,31,221,29,28,220, 20,212,213,21,215,23,22,214,210,18,19,211,17,209,208,16, 240,48,49,241,51,243,242,50,54,246,247,55,245,53,52,244, 60,252,253,61,255,63,62,254,250,58,59,251,57,249,248,56, 40,232,233,41,235,43,42,234,238,46,47,239,45,237,236,44, 228,36,37,229,39,231,230,38,34,226,227,35,225,33,32,224, 160,96,97,161,99,163,162,98,102,166,167,103,165,101,100,164, 108,172,173,109,175,111,110,174,170,106,107,171,105,169,168,104, 120,184,185,121,187,123,122,186,190,126,127,191,125,189,188,124, 180,116,117,181,119,183,182,118,114,178,179,115,177,113,112,176, 80,144,145,81,147,83,82,146,150,86,87,151,85,149,148,84, 156,92,93,157,95,159,158,94,90,154,155,91,153,89,88,152, 136,72,73,137,75,139,138,74,78,142,143,79,141,77,76,140, 68,132,133,69,135,71,70,134,130,66,67,131,65,129,128,64, }; 8.14 Installing and using the Comet J-BUS option: E XT/EC

39 /**************************************************************************************************/ /* FUNCTION CALL: crc = crc16 (message, length); */ /* with char *message; message = address of message */ /* */ /* int length; length of received message (including CRC) */ /* expressed in number of bytes */ /* int crc ; = CRC16 calculated from the "address", "code" and */ /* "information" fields. */ /* */ /* RETURN VALUE: calculated crc 16 (int crc) */ /**************************************************************************************************/ int crc16 (message, length) unsigned char message [ ]; /* buffer containing message */ /* for which the crc16 is to be calculated */ int length; /* length of message to be checked */ /* (including crc16) */ { /* beginning of the function */ int i ; /* loop variable */ int j ; /* calculation and displacement variable */ union { /* calculated crc16: */ int ival ; /* - whole */ unsigned char cval [ 2 ]; /* - table of 2 characters */ /* unsigned is important since otherwise the sign */ /* extension causes negative displacements with */ /* respect to the beginning of the table */ } crcal /*$ initialization of calculated crc */ crcal.ival = 0XFFFF; i = 0; /*$ correction of the length to be checked : remove the */ /*$ received crc16 from the length to be checked */ length = length - 2; /*$ WHILE there are bytes to be checked DO */ while ( i < length ) { /*$ calculate the table index */ j = (int) ( message [ i ] ^ crcal.cval [ CPH ] ); /*$ most significant byte */ crcal.cval [ CPH ] = tbcrch [ j ] ^ crcal.cval [ CPL ]; /*$ least significant byte */ crcal.cval [ CPL ] = tbcrcl [ j ]; /*$ next byte */ i++; }; /*$ END WHILE there are bytes to be checked */ /*$ return the calculated crc */ return ( crcal.ival ); } /* end of function */ Note: if the CRC is computed using table lookup, the most significant byte is transmitted first. Installing and using the Comet J-BUS option: E XT/EC 8.15

40 8.16 Installing and using the Comet J-BUS option: E XT/EC

41 Comet This chapter presents the specific operating aspects and system data provided by the communications board. For more detailed information, please refer to the "System information" section. The J-BUS hexadecimal communications protocol is used in slave mode. Block diagram manual by-pass static bypass mains 2 mains power supply mains 1 a b rectifier inverter c d load e charger battery Measured quantities a b c d e F mains 2 <C2> U mains 2 <96> I mains 2 <85 to 87> F mains 1 <C0> U mains 1 <90> F inverter <C1> U inverter <93 to 95> I inverter <82 to 84> F load <C3> U load <97 to 99> I load <88 to 8A> Apparent power <B0> I battery or I dc <D1> U battery or U dc <D0> battery backup time <D2> The numbers enclosed by <> (example <85 to 87>) are the addresses in the data array. Installing and using the Comet J-BUS option: E XT/EC 9.1

42 Comet (cont.) Main status bits (UPS operating information) Normal : inverter powers load and bit 460 = 1 full backup time available Danger : inverter does not power load bit 461 = 1 Downgraded : malfunction or bit 462 = 1 auxiliary fault Load on battery : load on battery power bit 468 = 1 Operating modes The following section describes the different states of a Comet UPS and the addresses of the bits in the system data array. Normal operation Normal: bit 460 = 1 Danger: bit 461 = 0 Downgraded: bit 462 = malfunction dependent Load on battery: bit 468 = 0 Static bypass module: bit 442 = 0 Rectifier module: bit 426 = 1 Inverter module: bit 435 = 1 Battery circuit breaker: bit 420 = 0 Load on battery Normal: bit 460 = 1 Danger: bit 461 = 0 Downgraded: bit 462 = malfunction dependent Load on battery: bit 468 = 1 Static bypass module: bit 442 = 0 Rectifier module: bit 426 = 0 Inverter module: bit 435 = 1 Battery circuit breaker: bit 420 = Installing and using the Comet J-BUS option: E XT/EC

43 Load on Mains 2 Normal: bit 460 = 0 Danger: bit 461 = 1 Downgraded: bit 462 = malfunction dependent Load on battery: bit 468 = malfunction dependent Static bypass module: bit 442 = 1 Rectifier module: bit 426 = malfunction dependent Inverter module: bit 435 = 0 Battery circuit breaker: bit 420 = malfunction dependent Installing and using the Comet J-BUS option: E XT/EC 9.3

44 9.4 Installing and using the Comet J-BUS option: E XT/EC

45 System information Message formats This section describes the messages exchanged between the communications interface and the external computer based on the J-BUS protocol. The length of time after which a message must be interpreted as "not understood" depends on the type of command sent. The table below lists maximum response times: Data rate 1200 Baud 2400 Baud 4800 Baud 9600 Baud Status information only 0.5 s 0.25 s 0.12 s 0.06 s All measurements 2 s 1 s 0.5 s 0.25 s Response time of event (independent of data rate) - Inverter start-up and connect : 30 s - Rectifier-charger startup : 30 s - Rectifier-charger or inverter stop : 30 s Example of read data array commands sent by the terminal (address: 20H) Request Station Function Data Length CRC 16 code address Read voltage A C3 52 array (10 values) Read current B array (11 values) Read global A 57 state bits (7 bits) For the "responses", refer to the "JBUS protocol" section functions 1 and 3. Installing and using the Comet J-BUS option: E XT/EC 10.1

46 System information (cont.) List of variable fields General definitions J-BUS fields Address in hex Access start end Binary data 40 4F read Counters read Currents 80 8B read Voltages read Powers B0 B2 read Frequencies C0 C3 read Battery D0 D3 read The binary data and binary commands can be accessed bit or word-wise. The word address and position of the bit in the word can be determined from the bit address: hundreds and tens digit of bit address = word address; least significant digit of bit address = bit position. Object 0 1 Switch open closed Unit off on Fault no fault fault Control device not activated activated 10.2 Installing and using the Comet J-BUS option: E XT/EC

47 Tables of measured data Current fields Measured current Units J-BUS address Type hex word S11 S31 S33 I1 (I phase 1) Inverter A 82 yes yes yes I2 (I phase 2) Inverter A 83 yes I3 (I phase 3) Inverter A 84 yes I1 (I phase 1) Mains 2 A 85 yes yes yes I2 (I phase 2) Mains 2 A 86 yes I3 (I phase 3) Mains 2 A 87 yes I1 (I phase 1) Load A 88 yes (*) yes (*) yes I2 (I phase 2) Load A 89 yes I3 (I phase 3) Load A 8A yes Voltage fields Measured voltage Units J-BUS address Type hex word S11 S31 S33 U Mains 1 V 90 yes yes yes V1 Inverter V 93 yes yes yes V2 Inverter V 94 yes V3 Inverter V 95 yes U Mains 2 V 96 yes yes yes V1 Load V 97 yes yes yes V2 Load V 98 yes V3 Load V 99 yes (*) : for Comet S11 or S31 5kVA models, this value is forced to zero when the load is powered by the emergency Mains. Installing and using the Comet J-BUS option: E XT/EC 10.3

48 System information (cont.) Power fields Frequency and counter fields Power measurements Units J-BUS address Type hex word S11 S31 S33 S Apparent Power kva B0 yes (*) yes (*) yes % load - B1 yes (*) yes (*) yes % rated load - B2 yes (*) yes (*) yes Measured quantity Units J-BUS address Type hex word S11 S31 S33 Frequencies F Inverter Hz C1 yes yes yes F Mains 2 Hz C2 yes yes yes F Load Hz C3 yes yes yes Counters Measurement counter 60 yes yes yes Status counter 61 yes yes yes Number of times 62 yes yes yes On battery power Battery fields Measured quantity Units J-BUS address Type hex word S11 S31 S33 U battery V D0 yes yes yes Battery backup time mn D2 yes (1) yes (1) yes (1) Battery power operation D4 yes (1) yes (1) yes (1) Valid indicator (1) : UPSs equipped with standard batteries. (*) : for Comet S11 or S31 5kVA models, this value is forced to zero when the load is powered by the emergency Mains Installing and using the Comet J-BUS option: E XT/EC

49 Tables of binary data Bit meaning Meaning hex word JBUS address bit = 0 bit = 1 bit word Mains 1 voltage normal outside tolerances Chopper operation off on Battery circuit ok fault End of battery no yes 421 backup time Charger status ok fault 422 Check battery no yes 424 Low battery no yes 425 shutdown warning Charger off on 426 operating status Peak overload no yes Inverter overload no yes 434 Inverter operating status off on 435 Inverter thermal no yes 437 overload K3N contactor status open closed Inverter connection not connected 443 status connected Mains 2 voltage normal outside tolerances Mains 2 frequency normal outside 451 tolerances Mains 2 / inverter normal outside 452 phase shift tolerances Phase rotation ok fault 453 Mains 2 overload no yes 454 Mains 2 no yes 455 thermal overload Normal no yes Danger no yes 461 Downgraded no yes 462 Low battery no yes 463 shutdown warning End of backup time no yes 464 Operating on no yes 468 battery power Installing and using the Comet J-BUS option: E XT/EC 10.5

50 System information (cont.) Glossary of information descriptors (data words at address 40 to 46) Every bit is listed according to the following format: bit address: description, followed by explanations corresponding to bit = 1. Word address: 40 Word address: 41 Word address: 42 Word address: : Mains 1 voltage outside of tolerances. The rectifier stops operating when Mains 1 phase-to-phase voltage is outside of tolerances. 412: chopper operating status. Indicates the operating status of the chopper. 420: battery circuit status. Indicates that the battery circuit is off either due to the circuit breaker being open or for other reasons; 421: end of battery backup time. Indicates that the minimum battery voltage threshold has been reached during operation on battery power and results in the UPS being shutdown; 422: charger status. Indicates that the minimum or maximum battery voltage has been reached following a charger fault or incorrect parameter parameter setting; 424: check battery. Indicates that the battery is to be checked; 425: low battery shutdown warning. The warning indicates that the end of backup time is imminent. It is only applicable when the inverters operate on battery power and may be parameterized; 426: charger operating status. Indicates whether the charger is on or off. 433: peak overload. Indicates operation on an overload with an excessively high peak current; 434: inverter overload. Informs the user that the load is drawing more than the rated UPS output; 435: inverter operating status. Indicates whether the inverter is on or off; 437: inverter thermal overload. Informs the user that a current overload has occurred on the inverter. The inverter shuts down after the time given by the overload curves Installing and using the Comet J-BUS option: E XT/EC

51 Word address: 44 Word address: 45 Word address: : K3N contactor status. Indicates the position of the inverter output contactor; 443: Inverter connection status. Indicates that the load is powered by the inverter (connected) or by Mains 2 (not connected). 450: Mains 2 voltage outside of tolerances. Indicates that the amplitude of Mains 2 voltage is outside of tolerances; 451: Mains 2 frequency outside of tolerances. Informs the user that Mains 2 frequency is outside of tolerances; 452: inverter / Mains 2 phase shift outside of tolerances. Indicates that the phase shift between the inverter and Mains 2 is outside of tolerances; 453: Phase rotation. Indicates that the phase rotation for three-phase mains power supplies is not correct; 454: Mains 2 overload. During an overload the load is supplied by Mains 2 via the "static bypass"; 455: Mains 2 thermal overload. Informs the user that a current overload has occurred on "static bypass"; The static bypass will open after the period given in the overload curves. 460: system normal, load protected. This status indicates that the unit is operating normally. The load is powered by the inverter and the full battery backup time is available if mains power fails; 461: system danger. Informs the user that a fault has occurred on the unit. The load is supplied by Mains 2; 462: system downgraded. Indicates a malfunction or environment fault has occurred. Nevertheless, the inverter can still supply the load; 463: low battery shutdown warning. The warning indicates that the end of battery backup time is imminent; 464: end of battery backup time. Indicates that the end of battery backup time has been reached and that the UPS is shutdown. The load is no longer supplied; 468: operating on battery power. Indicates that mains power is faulty and that the inverter is operating on battery power. The load is supplied by the inverter for the length of the battery backup time. Installing and using the Comet J-BUS option: E XT/EC 10.7

52 10.8 Installing and using the Comet J-BUS option: E XT/EC