Boot Project Load Failed (Retain Data)

What does E3-44 mean?

The CPU failed to load the boot project because of an issue with loading retain data. This indicates that critical persistent data, necessary for the project's operation, could not be retrieved, potentially leading to an incomplete or incorrect system startup. This can cause the PLC to run with default or corrupted settings.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Attempt to re-upload the boot project to the CPU and reinitialize or restore retain data.

2. 4

   If the issue persists, the CPU's internal memory for retain data may be faulty.