ABCLX IO Device redundancy setup with same IO Server

I am using AVEVA 2023 R2, and 1756 series PLC.

In Allen Bredley PLC, we have two unique IP addresses of the ethernet module of PLC. for example: 192.168.1.1 and 192.168.1.2 for the primary ethernet module and standby ethernet module.

Because two of them are in the CPU rack.

In Citect, how can I setup a redundancy IO device in the same IO Server? I would like to set up as the IO server will switchover to 192.168.1.2 when 192.168.1.1 is at fault.

  • Hi  

    • You can use I/O device wizard (as shown below) to create an ABCLX I/O device against I/O server. 

    • Update the field of "Special Opt" of port with IP address and slot number for each new I/O devices. (please refer to Driver Reference Help for details)

      The IP address of the Ethernet module on the ControlLogix system PLC, appended with a forward slash and the slot number (zero based) of the backplane containing the controller CPU module, in the format: x.x.x.x[/n]. For example: "192.168.0.1/0" (See Note below.)
      Note: With the release of Version 3 of the ABCLX driver (formerly known as the ABLogix driver), the format used for the port definition in the Special Options field of the Ports settings has changed. If you are upgrading from Version 2.x (ABLogix), you will have to adjust the content of this field.

    • Go to Component & Mapping to add the 2nd Port to the same Board, and then update the Special Opt with IP address and slot number
    • Go to I/O Devices and duplicate the newly created I/O device
    • Update Port Name of the 2nd entry and ensure Startup Mode and Priority are correctly set as shown below.

    • You can have different I/O device names for this redundant pair as long as Number is the same.

    Hope this would help you.

    Regards,

    Jacky