Safety PLC Configuration Data Read Error

What does E3-27 mean?

The Safety PLC is unable to read its configuration data, indicating corrupted or missing configuration. This will prevent the Safety PLC from operating correctly and performing its safety functions.

• Corruption of the stored configuration data within the Safety PLC's internal memory.
• Internal memory read fault preventing the PLC from accessing its configuration.
• Interruption of the 24VDC power supply during the PLC's boot-up or configuration loading sequence.
• Incompatible firmware and configuration file versions, causing parsing errors.
• Hardware defect in the Safety PLC's memory subsystem.

Click steps to track your progress.

1. 1

   1. Perform a power cycle of the Safety PLC (disconnect 24VDC for at least 10 seconds).

2. 2

   2. Re-download the safety configuration and application program to the Safety PLC from the engineering software.

3. 3

   3. Verify the engineering software project version compatibility with the Safety PLC's firmware version.

4. 4

   4. Check the integrity of the 24VDC power supply to the Safety PLC, ensuring it remains stable during power-up and configuration loading.

5. 5

   5. Replace the Safety PLC module if the configuration data read error persists after multiple re-downloads and power cycles.