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Heidenhain Controller
Parameter · Intermediate · 30-120 minutes
HEIDENHAIN 230-01BB - Input X for axis is already assigned to another axis.
HEIDENHAIN alarm 230-01BB occurs when the CfgAxes->ParamSet->pwmSignalOutput parameter references a PWM output channel that is already assigned to another axis in the TNC configuration. This creates a resource conflict where multiple axes attempt to use the same physical PWM output signal.
230-01BB
HEIDENHAIN 230-01BB - Input X for axis is already assigned to another axis.
Input X for axis is already assigned to another axis.
The PWM output assigned to this axis is already in use by another axis. Each axis needs a unique PWM signal channel.
Root Cause Summary
HEIDENHAIN alarm 230-01BB occurs when the CfgAxes->ParamSet->pwmSignalOutput parameter references a PWM output channel that is already assigned to another axis in the TNC configuration. This creates a resource conflict where multiple axes attempt to use the same physical PWM output signal.
Safety
- Refer to Heidenhain service manual
- Ensure qualified technician performs repairs
Causes and Fixes
- 1
Access Machine Parameter Configuration
Navigate to MOD function -> Machine Parameters -> CfgAxes configuration menu in the TNC control.
Ensure machine is in a safe state before accessing configuration parameters.
- 2
Review PWM Signal Output Assignments
Check each axis ParamSet->pwmSignalOutput parameter value. Document which axes are assigned to the same PWM output number.
Use the TNC's parameter search function to quickly locate all pwmSignalOutput parameters across axes.
- 3
Reassign Conflicting PWM Outputs
Modify the pwmSignalOutput parameter for conflicting axes to use unique, available PWM output channels according to your hardware configuration.
Consult the machine's electrical documentation to verify available PWM outputs before reassignment.
- 4
Validate Configuration and Restart
Save the modified CfgAxes parameters and perform a control restart to verify the alarm clears and axes initialize properly.
Call a technician if:
- ·Configuration restoration fails repeatedly
- ·Hardware wiring discrepancies discovered
- ·Multiple related servo alarms appear
Prevention
- Always backup CfgAxes before modifications
- Document PWM assignments during hardware changes
- Verify configuration after software updates
Common Mistakes
- Assuming PWM outputs are interchangeable without checking hardware
- Not backing up configuration before changes
- Ignoring physical wiring when modifying parameters
Related Alarms
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