Internal Error (SM560-S)

What does E2-38 mean?

The SM560-S Safety PLC has encountered an unspecified internal error. This indicates a system malfunction that prevents normal operation and requires intervention.

• Generic internal hardware failure within the SM560-S module.
• Corrupted firmware image preventing normal operation.
• Critical operating system error or exception.
• Transient power supply instability affecting internal digital logic.
• Environmental factors such as high humidity or condensation causing internal short circuits.

Click steps to track your progress.

1. 1

   1. Power cycle the SM560-S Safety PLC (disconnect 24VDC for at least 15 seconds).

2. 2

   2. Check for any environmental factors like humidity or condensation inside the control cabinet near the PLC.

3. 3

   3. Examine the communication cables (e.g., Ethernet) connected to the SM560-S for integrity and proper shielding to prevent EMI.

4. 4

   4. Access the 'System Log' or 'Diagnostic Buffer' in the engineering software for error codes or messages that provide more context.

5. 5

   5. Perform a firmware update of the SM560-S module to the latest stable version.

6. 6

   6. Replace the SM560-S Safety PLC module if the error cannot be cleared by previous steps.