CARLO GAVAZZI EM21 - COMMUNICATION PROTOCOL V1 REV0 Bedienungsanleitung Seite 1

CARLO GAVAZZICONTROLSSERIAL COMMUNICATION PROTOCOLWM24-96V1 R0 Page 1WM24-96SERIAL COMMUNICATION PROTOCOLVers. 1 Rev. 0January 3rd, 2006Gross Automa

10CARLO GAVAZZICONTROLSSERIAL COMMUNICATION PROTOCOLWM24-96V1 R0 Page 102.2.3 Reading of the instrument statusExample 3: reading of the “present mo

11CARLO GAVAZZICONTROLSSERIAL COMMUNICATION PROTOCOLWM24-96V1 R0 Page 11NOTE: a digital output can be used as remote control output only if the rele

12CARLO GAVAZZICONTROLSSERIAL COMMUNICATION PROTOCOLWM24-96V1 R0 Page 122.2.6 Energy and utility meters readingThe meter values are to be read from

13CARLO GAVAZZICONTROLSSERIAL COMMUNICATION PROTOCOLWM24-96V1 R0 Page 13Example 10: partial meters reset command1-word write request command (8 byte

14CARLO GAVAZZICONTROLSSERIAL COMMUNICATION PROTOCOLWM24-96V1 R0 Page 14The active and reactive system powers are respectively calculated as algebra

15CARLO GAVAZZICONTROLSSERIAL COMMUNICATION PROTOCOLWM24-96V1 R0 Page 153 EEPROM MAPThe information in the EEPROM memory are stored in two differen

16CARLO GAVAZZICONTROLSSERIAL COMMUNICATION PROTOCOLWM24-96V1 R0 Page 163.2 PROGRAMMING PARAMETERSADDRESS BYTE PARAMETER DESCRIPTION0C8E 2 password

17CARLO GAVAZZICONTROLSSERIAL COMMUNICATION PROTOCOLWM24-96V1 R0 Page 173.2.3 ct_ratioMINIMUM MAXIMUM FORMAT1 5000 11113.2.4 pt_ratioMINIMUM MAXIM

18CARLO GAVAZZICONTROLSSERIAL COMMUNICATION PROTOCOLWM24-96V1 R0 Page 183.2.9 pulse 1 and pulse 2ct x vt MINIMUM MAXIMUM FORMATFrom 1.0 to 10.0 1 1

19CARLO GAVAZZICONTROLSSERIAL COMMUNICATION PROTOCOLWM24-96V1 R0 Page 193.2.12 var_dig1 and var_dig2MINIMUM MAXIMUM FORMAT0 7 1111VALUE CODE DESCRI

2CARLO GAVAZZICONTROLSSERIAL COMMUNICATION PROTOCOLWM24-96V1 R0 Page 2IndexINDEX ...

20CARLO GAVAZZICONTROLSSERIAL COMMUNICATION PROTOCOLWM24-96V1 R0 Page 203.2.14 dig_on1(2)/dig_off1(2)MINIMUM MAXIMUM FORMAT–variable f.s.(W∑, var∑,

21CARLO GAVAZZICONTROLSSERIAL COMMUNICATION PROTOCOLWM24-96V1 R0 Page 213.2.17 addressMINIMUM MAXIMUM FORMAT1 255 11113.2.18 filter_rngMINIMUM MAX

22CARLO GAVAZZICONTROLSSERIAL COMMUNICATION PROTOCOLWM24-96V1 R0 Page 224 CRC CALCULATION ALGORITHMCRC is calculated according to the relevant flow

23CARLO GAVAZZICONTROLSSERIAL COMMUNICATION PROTOCOLWM24-96V1 R0 Page 235 HARDWARE SPECIFICATIONS5.1 RS485/RS422 INTERFACEGeneral technical specif

24CARLO GAVAZZICONTROLSSERIAL COMMUNICATION PROTOCOLWM24-96V1 R0 Page 24Timing characteristics for 2-wire communication msecT response: max answerin

25CARLO GAVAZZICONTROLSSERIAL COMMUNICATION PROTOCOLWM24-96V1 R0 Page 255.2 RS232 INTERFACEGeneral technical specifications NoteBaud rate 9600 bpsD

26CARLO GAVAZZICONTROLSSERIAL COMMUNICATION PROTOCOLWM24-96V1 R0 Page 26APPLICATION NOTES1. If the instrument does not answer within the “max answe

3CARLO GAVAZZICONTROLSSERIAL COMMUNICATION PROTOCOLWM24-96V1 R0 Page 31 SERIAL COMMUNICATION PROTOCOL1.1 INTRODUCTIONWM24-96 can be equipped with

4CARLO GAVAZZICONTROLSSERIAL COMMUNICATION PROTOCOLWM24-96V1 R0 Page 41.2.1 Function 04 (read words)Request frameAddress Function Data address n° o

5CARLO GAVAZZICONTROLSSERIAL COMMUNICATION PROTOCOLWM24-96V1 R0 Page 51.3 MEMORY AREAWM24-96 manages three different memory areas addressed as foll

6CARLO GAVAZZICONTROLSSERIAL COMMUNICATION PROTOCOLWM24-96V1 R0 Page 62 RAM VARIABLES MAP2.1 INSTANTANEOUS VARIABLES MAP (RAM, PAGE 1)ADDRESS BYTE

7CARLO GAVAZZICONTROLSSERIAL COMMUNICATION PROTOCOLWM24-96V1 R0 Page 7The voltage, current and power variables format is depending on the current an

8CARLO GAVAZZICONTROLSSERIAL COMMUNICATION PROTOCOLWM24-96V1 R0 Page 82.1.2 Instantaneous variables readingExample 1: Reading of a single variable:

9CARLO GAVAZZICONTROLSSERIAL COMMUNICATION PROTOCOLWM24-96V1 R0 Page 92.2 ALARM, STATUS, METER VALUES MAP (RAM, PAGE 0)ADDRESS BYTE VARIABLE Type A