Omron · CJ-series CJ2 CPU Unit
The CPU Unit failed to correctly read the contents of the Memory Card when power was turned ON, indicated by A401.03. This can occur if required files for automatic transfer are missing or if a program including network symbols was transferred to an incompatible CPU version (CJ2H-CPU6 unit version 1.5 or earlier, or CJ2M-CPU1 unit version 2.1 or earlier).
Click steps to track your progress.
Verify the Memory Card contains all files required for automatic transfer.
If applicable to older CJ2H-CPU6 or CJ2M-CPU1 models, transfer a user program (OBJ file) that does not include network symbols.