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Modbus TCP function code 43 for raspberry Pi

gakul
2018-06-28
2019-02-28
  • gakul - 2018-06-28

    Hello all,

    I would like to ask, if it is possible to communicate with a Modbus TCP slave device by means of function code 43 from codesys? I have a slave which just supports function code 43. I am using 'codesys control for Raspberry Pi' utility and trying to estabilish communication between slave and raspberry Pi through Modbus TCP. In codesys, function code 43 is not supported directly. However, I can make the function code 43 as shown in the attached figures. After I make it 43, the Modbus TCP node status becomes healthy but I am unable to receive any data.
    Apart from this, the data manual of slave device says that, I need to send the request to slave device in a particular frame format in order to get the response. Is it possible to send the request to slave explicitly by using any function block?

    A help would be really appreciable..

    Thanks in advance..!!

    IMG: Img2.png

    IMG: Img1.png

     
  • jbunel - 2019-02-28

    Hi. I have the same problem to communicate with an IGUS D1 Step by step driver.
    This card use only the function code 43.

    Did you find a solution with Codesys ?

    Thank You.

     

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