Kmac (Customer) asked a question.

August 15, 2022 at 1:02 PM
Click Plus as Remote IO

What is the best way to do a click Plus to Click Plus but use one as a remote IO.

  • 2 answers
  • 479 views

  • Garry (Customer)

    Hi @Kmac (Customer)​ 

    I would use Modbus TCP (Ethernet) or Modbus RTU (Serial - RS485) between the two controllers. One would be the Master (Client) and the other would be the Slave (Server) on the Modbus Network.

    The following post may help you with the timing of instructions for the master on the network.

    https://accautomation.ca/click-plc-serial-communication-timing/

    I hope this helps you out.

    Regards,

    Garry

    ACC Automation

     

    Here is the link for the Click PLC series.

    https://accautomation.ca/series/click-plc/

    Expand Post

    • Garry (Customer)

      Expanding my answer a little further:

      The master would control all of the communications with the slave.

      Set up common areas for each controller to Read and Write. This will ensure that communication will be as quick as possible.

      Example:

      Master Click - Write DS1 to DS20 - Read DS21 to DS40

      Use the copy pack and unpack instructions to convert the word to 16 bits or vice versa.

      Slave Click - Read DS1 to DS20 - Write DS21 to DS40

       

      Regards,

      Garry

      https://accautomation.ca/

      Expand Post

 

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