4�7�3� EXEMPLE MODBUS QUESTION
Question: ValueofthePhaseL1-PhaseL2voltage
Address Function
Initial
register
No register CRC
0A 04 2A 0002 xxxx
Address: 0A, Peripheralnumber:10indecimals�
Function: 04, Readfunction�
Initial register: 2A,registeronwhichthereadingwillstart�
No� of registers: 0002, numberofregistersread�
CRC: xxxx,CRCCharacter�
Response:
Address Function No Bytes
Register
no 1
Register
no 2
CRC
0A 04 04 0000 084D xxxx
Address: 0A, Respondingperipheralnumber:10indecimals�
Function: 04, Readfunction�
No� of bytes: 04,No�ofbytesreceived�
Register: 0000084D, ValueofthePhaseL1-PhaseL2voltage:V12x10:212�5V
CRC: xxxx,CRCCharacter�
Note: Every Modbus frame has a maximum limit of 20 variables (40 register).
46
CVM-C5-xxx-485
Instruction Manual