Rapid Scada connect devices by Moxa

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  • July 27, 2017 at 3:24 pm #2414
    zhaochengshen
    Participant

    Hi Mikhail,
    Rencently I was using Rapid Scada system to replace our old system. Our device is support the Modbus RTU. it’s normal When I connect directly the device. It made an error when I using the moxa(Nport 5630-16) that uart to ethernet, a serial port connect multiple devices.
    On Communication channel I choose “TCP Client”.
    The message is as follows when Communication Line Protocol choose “Modbus RTU”

    2017-07-27 19:29:39 Establish a TCP connection with 192.168.1.200:4001
    2017-07-27 19:29:39 Communication session with the Device 62 “gf1”, type: KpModbus, address: 1, call number: 192.168.1.200
    Request element group
    Send (8): 01 03 1F FF 00 03 32 2F
    Receive (5/5): 01 83 01 80 F0
    Device error: [01] ILLEGAL FUNCTION!
    Request element group
    Send (8): 01 03 1F FF 00 03 32 2F
    Receive (5/5): 01 83 01 80 F0
    Device error: [01] ILLEGAL FUNCTION!
    Request element group
    Send (8): 01 03 1F FF 00 03 32 2F
    Receive (5/5): 01 83 01 80 F0
    Device error: [01] ILLEGAL FUNCTION!
    2017-07-27 19:29:40 Disconnect from 192.168.1.200

    The message is as follows when Communication Line Protocol choose “Modbus TCP”

    2017-07-27 19:32:39 Establish a TCP connection with 192.168.1.200:4001
    2017-07-27 19:32:39 Communication session with the Device 62 “gf1”, type: KpModbus, address: 1, call number: 192.168.1.200
    Request element group
    Send (12): 00 00 00 00 00 06 01 03 1F FF 00 03
    Receive (0/7): Communication error!
    Request element group
    Send (12): 00 00 00 00 00 06 01 03 1F FF 00 03
    Receive (0/7): Communication error!
    Request element group
    Send (12): 00 00 00 00 00 06 01 03 1F FF 00 03
    Receive (0/7): Communication error!
    Request element group
    2017-07-27 19:32:44 Disconnect from 192.168.1.200

    I should choose What kind of Protocol ? Does the Rapid Scada support this way of connection?
    Whether we need to develop such a driver?

    July 27, 2017 at 3:49 pm #2415
    Mikhail
    Moderator

    Hi,
    Rapid SCADA supports this way of connection and well tested with Moxa NPort.
    May be to make tests more clear, firstly, turn Moxa into Real COM mode. When system works, switch Moxa to TCP server mode.
    If your device supports Modbus RTU, use Modbus RTU. No additional driver needed.

    July 28, 2017 at 11:18 am #2422
    zhaochengshen
    Participant

    Hi,
    Thanks for you help.
    Now it’t connected. There was a problems with the start address set error previous. The start address of Rapid SCADA is 1.

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