Sum of active offsets not zero

What does 61426 mean?

The sum of active offsets in the current block for geometry axes or rotary axes does not equal zero. This indicates a conflict in coordinate system transformations, which can lead to incorrect machine movements. The error code (%4) specifies the exact type of offset and axis affected.

• Multiple active offsets (e.g., G54, G55, G500, G92) are being applied simultaneously, resulting in a conflicting transformation sum.
• Inadvertent activation of an offset (e.g., tool offset, workpiece offset) in a block where it should not be combined with another active offset.
• Incorrect programming logic where an offset is not properly cancelled (e.g., G500) before another offset is called.
• Machine data (e.g., MD18000 to MD18005 for basic offsets) has been set incorrectly, leading to non-zero initial offset values.
• Transformation cycles (e.g., TRANS, ROT, SCALE) are applied in an illogical sequence or with incorrect parameters, resulting in a net non-zero offset.

Click steps to track your progress.

1. 1

   1. Analyze the NC program block where the fault occurs, identifying all active G-codes related to offsets (e.g., G54, G55, G500, G92, G68/G69).

2. 2

   2. Verify that only one primary workpiece offset (e.g., G54-G59) is active at any given time, cancelling previous offsets before new ones.

3. 3

   3. Check the status of active offsets using NC diagnostics (e.g., traversing display, active G-code display) to confirm which offsets are engaged.

4. 4

   4. Review any transformation cycle calls (e.g., G68 for rotation, TRANS A,B,C) and ensure they are cancelled (e.g., G69, TRANS A=0,B=0,C=0) before subsequent operations.

5. 5

   5. Examine machine data for coordinate systems and offsets (e.g., MD18000 to MD18005) to ensure initial values are correctly defined or zero where appropriate.