CC SBH rot. speed = 0 %.2s
Heidenhain · NC Control
What does 7955 A850 mean?
The standstill monitoring (SBH) was set to 0, or parameter MP1054.x = 0, or an internal software error occurred. This implies that the safety function for standstill monitoring is incorrectly configured or malfunctioning.
Common Causes
- Standstill monitoring was set to 0.
- Parameter MP1054.x = 0.
- Internal software error.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Verify the setting of parameter MP1054.x (traverse per motor revolution) for the affected axis; ensure it is not set to 0 if standstill monitoring is active and movement is expected.
- 2
Check other safety parameters related to SBH (Safe Controlled Stop or Standstill Monitoring) to ensure they are configured correctly for the application.
- 3
Power cycle the NC control to clear any transient internal software errors.
- 4
Document the current parameter settings and operating conditions to provide to a service agency if the issue persists.