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    Setting up a Write_Var command to have a M340 PLC Write data to a Serial device through a TSXETG100.


    Open your Unity Project and create a new Ethernet Network

    Configure the Ethernet network according to your application. Don't forget to Validate your changes.

    Next Link the Network to the correct Ethernet port in the configuration

    Next go to Tools and Project Settings

    In the Project Settings that the last 3 items in the Data types field are checked off.
    This will allow us to directly enter Arrays into our project rather than having to first declare them as variables.

    Next Log on to the TSXETG100 web pages with the User name of Administrator (default) and password Gateway (default)

    Clock Setup then Serial Port and configure you serial parameters according to your network.

    Next click on the Device List and make sure your serial device is in the list.

    Click on Ethernet & TCP/IP and configure your Ethernet port according to your network configuration

    Next add a ADDM block to your Unity program, link the OUT pin to the ADR pin of the Write_Var block, and enter the appropriate String (according to your Network configuration) to the IN pin
    Note: The Syntax of the IN parameter of the ADDM block for Ethernet is explained in additional FAQs.

    For this Example the Net Link id "Ethernet_1", the IP address of the TSXETG100 is, and the Modbus Serial device address is 49.
    Remember that this input is a String so you need ' before and after the text.

    Next configure the remaining parameters of the Write_Var block where:

    OBJ = String declaring the type of object to Write (%MW or %M)
    NUM = The starting register address in the Slave device to were the data will be sent
    NB = The # of registers to write
    GEST = Array of length 4 where the Management Exchange table for the Write_Var is located
    EMIS = Array of length NB where the Write data is stored in the M340.
    Note: The Array's are of type INT if declared as variables.

    Finally build, download, and run the program

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