Omron · CJ-series CJ2 CPU Unit
An Option Board error has occurred, indicated by A315.13 and A402.00. This typically happens if the Option Board was removed while the system was operating, if the board itself has failed, or if the connector mating is poor, leading to a loss of its specific functionality.
Click steps to track your progress.
Check the mating of the Option Board connector.
Reconnect the Option Board connector firmly.
If the Option Board still fails after re-connection, replace the Option Board.