Hardware Configuration

General Preconditions

The AC500 I/O configuration on redundant CS31 slave interface (CI590-CS31-HA) must be identical in both CPUs. To avoid any differences in configurations we recommend you, to create a single Automation_Builder project for high availability. Then import this project into both CPUs.

CS31 Bus wiring: The CPU connected to CI590-CS31-HA Bus A will be CPU A and will be the primary CPU in usual operation mode. The CPU connected to CI590-CS31-HA Bus B will be CPU B and will be the secondary CPU.

We recommend you, to use separate CM577-ETH modules for larger systems, refer to Requirements.

In order to use CI590-CS31-2FC (Fast Counter) the users have to perform the following:

  • CI590-CS31-2FC must be added to their CS31 network.
  • Section “Fast Counter” must be updated with the appropriate counter type. The default setting “No Counter” leads the system to become unstable.

For further information please refer to Example_AC500_HA_CS31_V242_3ADR023070M0201.pdf.

Preconditions when using more than one CS31 line (AC500 CPU configuration + CM574-RS)

  • Download the CPU configuration before downloading configuration and program to CM574-RS.
  • CM574-RS is a programmable co–processor module with two serial communication ports. Configuration and programming of the CM574-RS module is done by creating a separate node in Automation_Builder project. In case of problems, please check configuration of CM574-RS below AC500 CPU node: “Enable debug” must be set to “On”.
  • The AC500 CPU node in Automation_Builder project must be downloaded to AC500 CPU before downloading CM574-RS configuration and the program to CM574-RS.
  • If more than one CS31 line is configured, the users have to set the “Max Wait Run” under each CS31 Bus line based on the actual time taken for all CS31 lines to come online. This will ensure that all outputs of the I/O modules get activated at the same time.
  • If the CS31 lines have different sizes their startup time will be different. In order to avoid an unsynchronized I/O module startup, users have to set the “Max Wait Run” under each CS31 Bus line and it must be greater than the actual time taken for all CS31 lines to come online. This will ensure that all I/O module outputs will get activated at the same time.
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