vasovas Posted January 9, 2023 Report Share Posted January 9, 2023 Hi, Guys, I tried to configure M91-2-R1 like Modbus Slave to communicate with SCADA, but I did not manage. DIP switches and RS232/485 port pinout double checked. Below is the program first network I used: Any hints? D.Vasilev Link to comment Share on other sites More sharing options...
vasovas Posted January 14, 2023 Author Report Share Posted January 14, 2023 Port Mode must be set by SI64 = 1 (RS485). This is only part missed, the first net that configure M91 like Modbus slave is correct. All works fine. Might be helpful for someone. 1 Link to comment Share on other sites More sharing options...
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