4012
Axis identifier not allowed
Beckhoff · TwinCAT 2 NC
What does 4012 mean?
An unacceptable value (outside the range of 1 to 255) has been used for an axis identifier, or the specified axis does not exist within the current system configuration. This parameter error prevents proper identification and control of the specified axis, leading to its inability to move or respond to commands.
Additional Steps
Steps 1–2 are listed in Priority Fix.
- 3
Correct any misspellings or incorrect numerical entries for the axis identifier.
- 4
Restart the NC system after making configuration changes.
Source: Beckhoff TwinCAT 2 NC
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