Drive lock through FS, stop 1 switch-off active
Heidenhain · TNC CNC Controllers
What does 231-A093 mean?
This error indicates that a drive is locked due to functional safety (FS) because a Stop 1 switch-off reaction is active for the CC module. An attempt was made to switch on a drive while the CC had not yet completed a running Stop 1 switch-off, or due to an internal software error.
Common Causes
- Drive locked through functional safety FS.
- Attempt to switch on a drive while the CC has not yet completed a running Stop 1 switch-off.
- Internal software error.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Wait for the CC to fully complete any active Stop 1 switch-off reaction before attempting to switch on drives.
- 2
Verify the status of the CC module; ensure it is in a ready state before enabling drives.
- 3
Check the software version of the controller and update it if a known issue related to Stop 1 management exists.
- 4
Review the safety program logic to ensure proper handling of drive enable requests during and after a Stop 1 condition.