Modbus Comminicating only 4 device 5th and others not connect

Forum Home Forums Communicating with Devices Modbus Modbus Comminicating only 4 device 5th and others not connect

This topic contains 2 replies, has 2 voices, and was last updated by  ahmt_87 9 months, 4 weeks ago.

Viewing 3 posts - 1 through 3 (of 3 total)
  • Author
    Posts
  • #3752

    ahmt_87
    Participant

    I am reading values from energy analyzer with modbus.I have modbus gateway on the network.And this gateway connects the analyzer with rs485.I am able to comminicate 4 analyzer there is no proplem but after 4, 5,6,7,8,9.th devices i can not comminicate.
    Firstly, i checked all cable connections it was okay.
    i tried with modbus poll and i connected all devices.But with rapid scada i am not comminicating with all devices.
    I tried with 5th device as like 4th device.I was able to connect no proplem
    I am sending you some pictures.I need some help.thank you very much.

    pictures

    picture 1
    Why is not this forum has attach the image file button??? I can not make hand drawing here :)))

    https://ibb.co/m5MJ38
    https://ibb.co/gz2fGT
    https://ibb.co/mBq0GT

    https://ibb.co/m5MJ38
    https://ibb.co/gz2fGT
    https://ibb.co/mBq0GT

    #3753
    Mikhail
    Mikhail
    Moderator

    Hi,

    Could you translate the error message?
    I suppose, the log says that we can’t connect to a device. Is it possible that the device doesn’t support several connections in parallel? Are you sure that the port 530 is correct? Usually 502 is used.
    For testing, you can try Hercules utility to connect. What is the result of this test?

    The forum does not allow to upload images, just links to them.

    #3755

    ahmt_87
    Participant

    Thank you for your interest.I solved the issue.I changed connection Shared at operating mode in TCP Client Properties and i entered my modbus gateway ip adress as an Host ip adress.After that all is okay.

Viewing 3 posts - 1 through 3 (of 3 total)

You must be logged in to reply to this topic.