MULTI-C.BUS ERR.

What does 1431 mean?

A communication error with another CPU is detected in the Multiple CPU high speed bus. This suggests an issue preventing proper data exchange between CPU modules in a high-speed multi-CPU system, impacting coordinated operation.

Click steps to track your progress.

1. 1

   Take noise reduction measures.

2. 2

   Reset the CPU module and RUN it again. If the same error is displayed again, the CPU module has hardware failure.