Discrete Address Table - Ebyte E830-DTU(2R2-433L)-V8 User Manual

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Chengdu Ebyte Electronic Technology Co.,Ltd

command:

Device ModBus

Function code

address

Return data value:

Device ModBus

Function code

address

Send instructions: 01 05 00 00 FF 00 8C 3A

Return data: 01 05 00 00 FF 00 8C 3A

In the send instruction, the write value FF 00 represents ON, i.e. the relay is closed, and the write value of 00 00 represents OFF, i.e.

the relay is off.

Example 3: Use the 0F function code to write two output coils, for example, let the N02 relay output close, N01 relay output

disconnect, send the command as follows:

Device ModBus

Function code

address

Return data value:

Device ModBus

Function code

address

Send command: 01 0F 00 00 00 02 01 02 5F 56

Return data: 01 0F 00 00 00 02 D4 0A

In the sending instruction, write the value 02, corresponding to binary 0000 0010, bit0 is 0, representing OFF, that is, relay N01 is

disconnected; bit1 is 1, representing ON, that is, relay N02 is closed.

8.2.2