kdudkov / mb_gate

go modbus tcp - modbus rtu gate

Modbus gate

Modbus RTU to Modbus TCP gateway.

Usage: mb_gate -port /dev/ttyUSB0 -speed 9600 -tcp_port 1502

Protocol description

4-relay plate

registers

Address	Description
0x4000	device address (read/write)
0x04	firmware month
0x08	firmware year
0x10	firmware hour, minute
0x20	pcb version

coils

Address	Description
0x01	relay1 (0x100 = on?)
0x02	relay2 (0x100 = on?)
0x03	relay3 (0x100 = on?)
0x04	relay4 (0x100 = on?)
0xff	all (0xffff = on?)

din-rail plate

registers

Address	Description
0x1	device address

coils

Address	Description
0x10	relay1
0x11	relay2
0x12	relay3
0x13	relay4