Hi， I am using DSC modbus module for Modbus RTU（serial）but I could not get response with error （56）.
1. I could use NI serial for modbus RTU communication and get response data.
I could use a serial communication to send the command (01 03 01 00 00 10 CRC, I use code to generate CRC), and get date from serial read of (01 03 32 dataset of 32 byte, CRC), this works but Now I want to use DSC module for Modbus RTU communication,
2. I could not get response data with DSC modbus module for master mode
I want to send the command for ( 01 03 01 00 00 10 CRC), I have tried both Master with diagram below, but no works. I put the diagram below. I got the error for 56.
3. I could not get response data with DSC modbus module for slave mode
I send ( 01 03 01 00 00 10 CRC) command with no error, and but I could not get response data. I put the diagram below.
So how shall I set up with DSC module for modbus RTU? How shall I set up the "starting address" input terminal of "hold reading resisters"?
Thanks.
Yang
