7949 A043

CC%d BA2 only one axis allowed

Heidenhain · NC Control

What does 7949 A043 mean?

In operating mode BA2 with open safety doors, the simultaneous movement of more than one axis is not allowed. This error is triggered when this safety rule is violated.

Common Causes

  • Simultaneous movement of more than one axis detected in operating mode BA2 with open safety doors.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Ensure all axes are at a complete standstill before attempting any movement in BA2 operating mode with open safety doors.

  2. 2

    Confirm that only one axis is commanded to move at a time when operating in BA2 mode with safety doors open.

  3. 3

    Verify the functionality and correct operation of the safety door interlocks to ensure their status is accurately detected by the NC control.

  4. 4

    Review the NC program or manual jogging procedures to ensure strict adherence to the single-axis movement rule in this specific operating mode.

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Verified technical data. Last updated: March 2026

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