vasovas Posted January 9 Report Share Posted January 9 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 Quote Link to comment Share on other sites More sharing options...
vasovas Posted January 14 Author Report Share Posted January 14 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 Quote Link to comment Share on other sites More sharing options...
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