Manual Switching Disabled

What does 4120 mean?

This fault occurs when the manual switching enable flag (SM1592) is OFF (disabled) at the time the SP.CONTSW instruction is executed. This configuration prevents manual system switching operations, effectively blocking the SP.CONTSW instruction from executing and causing the system to remain in its current state.

• The manual switching enable flag (SM1592) is OFF.

Click steps to track your progress.

1. 1

   Verify the status of the manual switching enable flag (SM1592) in the CPU program. Ensure it is set to ON to enable manual system switching.