Go to start pageAC500-S safety PLCSafety user manual V1.3.2...AppendixUsage of safety CPU with AC500 V3 non-safety CPU PM56xxAC500 V3 non-safety CPU PLC commands
AC500 V3 non-safety CPU PLC commandsPermalink

This is the web edition of the original ‎⮫ AC500-S safety user manual, version 1.3.2. This web edition is provided for quick reference only. The original safety user manual must be used to meet functional safety application requirements.

The following PLC shell commands (if supported by the current non-safety CPU firmware) from non-safety CPU can influence safety CPU state:

  • ‎reboot‎

    It reboots non-safety CPU and, as a result, safety CPU will be restarted as well.

  • ‎stopprg‎, ‎resetprg‎, ‎resetprgcold‎

    They force the safety CPU to leave RUN (safety) mode and to switch to DEBUG STOP (non-safety) mode.

  • ‎startprg‎

    It forces the safety CPU to leave DEBUG STOP (non-safety) mode and to switch to DEBUG RUN (non-safety) mode. If safety CPU is already in RUN (safety) mode or DEBUG RUN (non-safety) mode, this PLC shell command has no influence on the safety CPU.

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The error messages of the safety CPU are aggregated in the diagnosis system on non-safety CPU.

⮫ “Diagnosis and debugging”