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Configuration without communication interface modules to establish redundancy

Configuration of the HA system without communication interface modules to establish redundancy is done by the following steps (for details see the example documentations):

  2. Select the CPUs based on the requirements ⮫ “CPU choice, system size and performance indications”.

  3. Install Automation Builder including the latest libraries ⮫ “How to get and install the AC500 High Availability system package”.

  4. Create a new project in Automation Builder for the chosen CPUs.

  5. Configure the required Modbus and UDP configuration in the Automation Builder device tree of the CPU.

    AB_Device_Tree

  6. For UDP in AC500 PLC, configure “UDP_no_AC31_header” and set the port number to value '3000'.

    AB_Parameter_List

  7. Assign the IP addresses in ³ 2 different Ethernet networks:

    • SCADA network: SCADA, connected PLC A and PLC B

    • Field network: connected CI52x module(s)

  8. Configure the mandatory HA_MOD_CONTROL function block for the HA task ⮫ “HA program”.

  9. Add Callback stop function HA_MOD_CALLBACK_STOP and call it in the system event “stop”.

  10. Add optional HA utility function blocks or function block HA_MOD_DATASYNC.

  11. Make the global variable xNoCiBus = TRUE to run the system without communication interface module configured in the system⮫ “HA Modbus system without communication interface modules in the network”.

    AB_Configuration

  13. Activate the runtime license if it is a V3 PLC to enable HA system⮫ “PLC runtime licensing”.

  14. Compile and download to both PLCs (simplified in V3 via integrated download manager).

  15. Create a boot project, restart the complete system and RUN.

  16. Operation: Test use cases (e.g. by putting the primary PLC to STOP mode and observe the switchover). For different use cases and behavior refer to .

  17. Runtime error and diagnosis function block can be used to monitor the system ⮫ “Diagnosis”.