Coolmay L02 Series - Modbus RTU Function RD3 A;WR3 A Instruction

Coolmay L02 Series PLC Programming Manual
https://en.coolmay.com/
72
The data obtained by using the serial port tool to monitor the serial port 3 is:
[2017:11:01:11:49:16][ receive]31 32 32
RS2 command last parameter =1: Serial port 3;
=2: CAN.
8.4.3. Modbus RTU function RD3A/WR3A instruction
When used as Modbus RTU protocol: set M8192=1; set D8400 as the
communication parameter, and set D8414 as the master and slave station
number.
For example, set D8400=H81, D8414=K1 (communication parameter is
9600/8/n/1, slave station number is 1).
RD3A program example (refer to chapter 8.1.1 for instruction
introduction):
Host program: