61426

Sum of the active offsets does not equal zero

Siemens · DAsl Diagnostics and Alarms

What does 61426 mean?

The sum of active offsets for geometry axes or rotary axes does not equal zero. This indicates an inconsistency in the programmed offsets, potentially affecting translatory or rotary components, leading to incorrect tool positioning or axis movements. The specific error type (A, B, C, D, E) is indicated by the %4 parameter.

Common Causes

  • Incorrectly parameterized offsets for multiple active geometry axes (e.g., G54, G55).
  • Manual adjustment of individual axis offsets without updating the overall system offset compensation.
  • Software bug in the NC program or PLC logic that incorrectly calculates or applies axis offsets.
  • Corrupted non-volatile memory storing axis offset data (NVRAM).

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Verify current active offset values in the machine control data (e.g., MD113000: G_ADD_OFF_X).

  2. 2

    Recalculate the required total offset for all active geometry axes, ensuring their sum is zero.

  3. 3

    Manually adjust individual axis offsets (e.g., G54, G55, G56) to ensure their vectorial sum is zero.

  4. 4

    Execute an NC program block that re-initializes or re-applies all active axis offsets.

  5. 5

    Perform a system backup and then a factory reset of the NCU, followed by restoration of verified machine data.

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Verified technical data. Last updated: March 2026

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Source: Siemens DAsl Diagnostics and Alarms