Siemens SINUMERIK codes
Siemens SINUMERIKServo/AxisIntermediate20-60 minutes

25202

Siemens 25202 - Axis waiting for drive

Axis waiting for drive

Drive group error (self-clearing) Control reaction: Interface signals are set. Alarm display.

Root Cause Summary

SINUMERIK alarm 25202 TRACYL Error occurs when the cylindrical surface transformation function encounters invalid configuration parameters or constraint violations. This typically involves incorrect cylinder radius settings in MD24100, improper axis assignments in transformation machine data, or activation conflicts with other coordinate transformations.

Safety

  • Drive/power/encoder circuit: hazardous voltages may remain in the DC link after power-off. Lock out / tag out, wait for discharge per the drive documentation, and use qualified personnel only.

Causes and Fixes

  1. 1

    Access Machine Data

    Navigate to HMI → Commissioning → Machine → Machine Data → Channel-specific → Transformations and locate MD24100 TRACYL_RADIUS_CYLINDER.

    Use filter function in machine data editor to quickly find TRACYL parameters

  2. 2

    Verify Radius Value

    Check that MD24100 contains a positive non-zero value matching your actual cylinder radius in machine units (mm or inches).

    Incorrect radius values can cause collision or dimensional errors

  3. 3

    Validate Range Limits

    Ensure radius value is within system limits defined by MD24110 (TRACYL_RADIUS_LIMIT_LOWER) and MD24111 (TRACYL_RADIUS_LIMIT_UPPER).

  4. 4

    Reset and Test

    Execute machine data reset (RESET 840D) and test TRACYL activation with G331 command in MDI mode.

DIY Feasiblehigh confidence

Call a technician if:

  • ·Machine data backup corruption
  • ·Hardware axis encoder issues
  • ·Kinematic transformation calculation errors persist after parameter correction

Prevention

  • Always backup machine data before modifying TRACYL parameters
  • Use TRACYL simulation mode before production runs
  • Regularly verify cylinder radius measurements match MD24100 settings

Common Mistakes

  • Setting MD24100 to zero or negative values
  • Assigning non-existent axis numbers in TRACYL configuration
  • Activating TRACYL without proper work coordinate system setup

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