43
RS485 Timeout
SEW Eurodrive · MOVIDRIVE compact System (MCF/MCV/MCS4_A)
What does 43 mean?
Rapid stop because the RS485 communication connection between the inverter and the PC has been interrupted, leading to a communication timeout. The drive loses its control link to the PC.
Common Causes
- Communication timeout on the RS485 serial interface.
- Slave device on RS485 is not responding.
- RS485 wiring issues (e.g., termination, noise).
- Incorrect baud rate or communication protocol settings.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Check the RS485 connection cable and interfaces between the inverter and the PC for integrity.
Verified technical data. Last updated: March 2026
Related Faults
Source: SEW Eurodrive MOVIDRIVE compact System (MCF/MCV/MCS4_A)