What causes Siemens SINUMERIK alarm 61430?

Input measurement points (PM1, PM2, PM3) are collinear or coincident, resulting in zero or near-zero side lengths. CYCLE996 measurement points lack sufficient geometric separation or contain duplicate coordinates. Kinematic model calculation failed due to invalid or degenerate triangle geometry from probe positions. Machine zero offset or calibration data corrupted, affecting coordinate transformation calculations. Probe tip wear or calibration error causing measurement point inaccuracy.

How do I fix Siemens SINUMERIK alarm 61430?

1. Verify PM1, PM2, PM3 coordinates are geometrically valid and form a non-degenerate triangle with adequate spacing (check machine documentation for minimum separation requirements) 2. Re-run CYCLE996 with freshly calibrated probe and confirm all three measurement points are acquired with correct touch-offs 3. Review and validate machine kinematic parameters and zero offset data in machine data; compare against backup or factory settings if available 4. Check probe condition for wear or damage; recalibrate probe using manufacturer-specified procedure and verify calibration data is stored correctly 5. Clear alarm, restart control, and re-execute CYCLE996 with verbose diagnostics enabled to capture actual measured coordinates for analysis

Siemens SINUMERIK codes

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Siemens SINUMERIK Controller

Servo/Axis · Intermediate · 30-60 minutes

Alarm 61430

Siemens 840D 61430 - Channel block: Kinematic vectors not computed -> Error code

The alarm can be triggered by the following measuring cycles: CYCLE996 Remedy: Causes of error: 1. Error code = A -> Plausibility of the input points PM1, PM2, PM3 not fulfilled, resulting side lengths must be not equal to zero (Notice: even in the case of side lengths not equal to zero, there is a

Siemens SINUMERIKServo/AxisIntermediate30-60 minutes

61430

Siemens 840D 61430 - Channel block: Kinematic vectors not computed -> Error code

Channel block: Kinematic vectors not computed -> Error code

Safety

Refer to Siemens documentation
Ensure qualified technician performs repairs

Common Causes

Input measurement points (PM1, PM2, PM3) are collinear or coincident, resulting in zero or near-zero side lengths
CYCLE996 measurement points lack sufficient geometric separation or contain duplicate coordinates
Kinematic model calculation failed due to invalid or degenerate triangle geometry from probe positions
Machine zero offset or calibration data corrupted, affecting coordinate transformation calculations
Probe tip wear or calibration error causing measurement point inaccuracy

Troubleshooting Steps

1Verify PM1, PM2, PM3 coordinates are geometrically valid and form a non-degenerate triangle with adequate spacing (check machine documentation for minimum separation requirements)
2Re-run CYCLE996 with freshly calibrated probe and confirm all three measurement points are acquired with correct touch-offs
3Review and validate machine kinematic parameters and zero offset data in machine data; compare against backup or factory settings if available
4Check probe condition for wear or damage; recalibrate probe using manufacturer-specified procedure and verify calibration data is stored correctly
5Clear alarm, restart control, and re-execute CYCLE996 with verbose diagnostics enabled to capture actual measured coordinates for analysis

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