47
System bus 1 timeout
SEW Eurodrive · MCBSM
What does 47 mean?
Stop without inhibit due to a fault during communication via the system bus. This indicates a loss of communication with other connected devices on the system bus, disrupting coordinated control and data exchange.
Common Causes
- Communication timeout detected on the system bus (Bus 1).
- Loss of communication with a critical drive component or network node.
- Faulty bus wiring or connector.
- Interference on the system bus.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Check the physical system bus connection cables for damage, loose terminals, or improper termination.
- 2
Verify the communication parameters and addresses for all devices on System Bus 1.
Verified technical data. Last updated: March 2026
Related Faults
Source: SEW Eurodrive MCBSM