axismd.ai
Heidenhain Controller
Communication · Intermediate · 30-120 minutes
HEIDENHAIN 235-0062 - Unknown device on HSCI bus
Alarm 235-0062 occurs when the TNC control detects a device on the HSCI (High Speed Communication Interface) bus that is not recognized in the internal device table. This typically happens after software updates, hardware changes, or when incompatible devices are connected to the HSCI network.
235-0062
HEIDENHAIN 235-0062 - Unknown device on HSCI bus
Unknown device on HSCI bus
An unrecognized device is present on the HSCI bus. The NC software maintains a device table and the connected unit is either unsupported or missing from that table.
Root Cause Summary
Alarm 235-0062 occurs when the TNC control detects a device on the HSCI (High Speed Communication Interface) bus that is not recognized in the internal device table. This typically happens after software updates, hardware changes, or when incompatible devices are connected to the HSCI network.
Safety
- Refer to Heidenhain service manual
- Ensure qualified technician performs repairs
Causes and Fixes
- 1
Check software version compatibility
Access MOD function, select 'System Info' to verify current TNC software version matches the device table version requirements.
Document the software version before any updates to ensure compatibility rollback if needed
- 2
Update device table
Contact Heidenhain support to obtain the correct device table file for your software version and connected hardware configuration.
Never manually edit device table files as this can cause system instability
- 3
Reload system configuration
Power cycle the TNC control completely and allow full HSCI bus initialization to recognize updated device table entries.
Call a technician if:
- ·Device table updates required
- ·HSCI hardware replacement needed
- ·Software version conflicts
Prevention
- Maintain device table backups before software updates
- Document all HSCI device configurations
- Regular HSCI cable inspection schedule
Common Mistakes
- Installing software updates without checking device compatibility
- Ignoring HSCI cable length specifications
- Not maintaining proper bus termination
Seeing Multiple Alarms?
Seeing another alarm with this one? Enter the code.
Get machine-aware diagnosis
AxisMD logs alarms against your actual machines, tracks patterns, and gives AI context your manual doesn't have.
Start freeWas this guide helpful?
Always verify with your machine manual or a certified technician before performing service procedures.