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I have DPU2000R protection relay with part no. 587R0410-61000. i installed AUX24 communication card and a new security key so the part no. became 587R0412-61004. i changed the communication setting as following:
Parameter 1: 3
mode parameter 1: Disabled
mode parameter 2: Disabled
i tried to connect with KEPserver OPC using modbus RTU driver using RS-232 port and i got all readings from the relay.
But when using the RS-485 i got no response although i did the connections as per the relay manual and using many different RS-232/RS-485 converters.
please can anyone help me?
Parameter 1: 3
mode parameter 1: Disabled
mode parameter 2: Disabled
i tried to connect with KEPserver OPC using modbus RTU driver using RS-232 port and i got all readings from the relay.
But when using the RS-485 i got no response although i did the connections as per the relay manual and using many different RS-232/RS-485 converters.
please can anyone help me?