Autonics TM4 Series - Components and Accessories

1 Modbus RTU Protocol
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1.6 Preset single registers(Func 06–06H)
Read the Binary data of single Holding Registers (4X reference) in Slave device.
(1) Query (Master)
Slave
address
Function
Register address
Preset data
Error check(CRC16)
High
Low
High
Low
Low
High
1Byte
1Byte
1Byte
1Byte
1Byte
1Byte
1Byte
1Byte
(2) Response (Slave)
Slave address Function
Register address
Preset data
Error check(CRC16)
High
Low
High
Low
Low
High
1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte
If write “10(A H)” to Holding Register 400001(0000 H) on Slave(Address 17) from Master.
 Query (Master)
Slave address Function
Starting address
Preset data
Error check(CRC16)
High
Low
High
Low
Low
High
11 H 06 H 00 H 00 H 00 H 0A H ## H ## H
 Response (Slave)
Slave address Function
Starting address
Preset data
Error check(CRC16)
High
Low
High
Low
Low
High
11 H 06 H 00 H 00 H 00 H 0A H ## H ## H
CRC16
CRC16