SAFE I/O CROSS CHECK ERROR(PMC)

What does PW0011 mean?

The PMC detected an error in the system-defined safe I/O cross-check function. This indicates a discrepancy in the monitored safe I/O signals critical for safety operation, which could lead to an unsafe state. A power cycle is required.

• Mismatched state between monitored safe I/O signals by PMC.
• Defective component connected to PMC safe I/O points.
• PMC internal processing error for safe I/O comparison.
• Intermittent connection or signal degradation on safe I/O lines.
• Incorrectly set safe I/O parameters in the PMC.

Click steps to track your progress.

1. 1

   Inspect the status of each safe I/O channel on the PMC's diagnostic interface.

2. 2

   Measure voltage levels at PMC safe I/O terminals.

3. 3

   Verify parameter P1-17 (PMC Safe I/O Configuration) settings.

4. 4

   Examine physical wiring for all connected safe I/O devices.

5. 5

   Test PMC's safe I/O comparison logic by cycling monitored inputs.