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  1. C

    Modbus Poll to ABB REX640 relay

    Both shows -1.. does it mean that the modbus protocol is not configured?
  2. C

    Modbus Poll to ABB REX640 relay

    It is possible that I have to define the IP address of laptop that I'll be using.
  3. C

    Modbus Poll to ABB REX640 relay

    Yes the status is false.. So now I have to figure out how to activate it
  4. C

    Modbus Poll to ABB REX640 relay

    thank you very much, I'll look into it.
  5. C

    Modbus Poll to ABB REX640 relay

    Are you making a direct connection between your computer and the REX640 (i.e. just an Ethernet cable connecting the two) or are you using an Ethernet switch (potentially with other devices on the network)? - using ethernet cable connecting my pc and the relay. If it's the latter, does the ping...
  6. C

    Modbus Poll to ABB REX640 relay

    Hi, Thanks again..
  7. C

    Modbus Poll to ABB REX640 relay

    Hi, Yes I'm seeing error.. tried ping, it is responding. Thank you for the reply.
  8. C

    Modbus Poll to ABB REX640 relay

    Hi, I am trying to connect modbus poll to REX640 but no luck. Perhaps wrong configuration, looking for advise.
  9. C

    Modbus Simulator Software (Master/Client)

    Hi, can this be used to connect with rex640 protection relay? Beginner here.
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