Circutor Computer SMART III 14 - Modbus Query Example

4.9.4. EXAMPLE OF A MODBUS QUERY
Query: Instantaneous value of the L1 phase voltage
Address Function Initial log No. of logs CRC
0A 04 0000 0002 70B0
Address: 0A, Peripheral number: 10 in decimal.
Function: 04, Read function.
Initial Log: 0000, log from which to start reading.
No. of logs: 0002, number of logs to be read.
CRC: 70B0, CRC character.
Response:
Address Function No. of Bytes Log no. 1 Log no. 2 CRC
0A 04 04 0000 084D 8621
Address: 0A, Responding peripheral number: 10 in decimal.
Function: 04, Read function.
No. of bytes: 04, No. of bytes received.
Log: 0000084D, value of the L1 phase voltage: VL1 x 10: 212.5 V
CRC: 8621, CRC character.
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Computer SMART III
Instruction Manual