Read and Send SMS via Modbus

NETWORKING SOLUTIONS
1

I am using a RUT956 with an Allen Bradley Micro820 PLC connected via RS485 to read and send SMSs. I have not had any success in reading SMS although I can read various Modbus registers. I need help configuring this. Is there a register to read new messages?

For sending SMS I can populate register 398 but can not write to register 397 in order to send the SMS.

I am also using QModMaster software for testing.

3

Hello,

Thank you for your inquiry.

Unfortunately, reading SMS messages via Modbus is not supported on the RUT956.

For sending SMS messages, you can refer to our detailed configuration example here:
Modbus TCP Server Send SMS Example.

If you have any further questions or need additional assistance, feel free to reach out.

Best regards,