Cause:
- the DCP communication was interrupted during travel
Remedial action:
- check the wiring of DCP connection
- ensure that the shielding of the DCP cable is fine
- for sporadic occurrence: check the EMC-compliant installation of the system (shielding, etc.)
- in the info menu "Bus Info 4" check the readings of the error counters
- check the DCP interface of the elevator controller