SI Motion CU: Checksum error safety monitoring functions
Siemens · DAsl Diagnostics and Alarms
What does 201680 mean?
The checksum calculated by the drive for safety-relevant parameters (r9728) does not match the reference checksum (p9729) saved during the last machine acceptance. This indicates that safety-relevant parameters have been altered or an internal fault is present, compromising the integrity of the safety monitoring functions. This fault results in a STOP A that can be acknowledged.
Complete Troubleshooting Guide
- 1
Identify if any safety-relevant parameters have been changed since the last machine acceptance or commissioning.
- 2
If parameters were intentionally changed, re-commission or re-accept the safety functions to recalculate and save the correct reference checksum in p9729.
- 3
If no changes were made, diagnose for internal faults within the Control Unit affecting safety parameter integrity or memory.
- 4
Perform a Power ON reset after addressing the underlying issue to re-evaluate the checksum.