Heidenhain codes
HeidenhainServo/AxisIntermediate30-120 minutes

230-04C5

HEIDENHAIN 230-04C5 - Control of brake on axis incorrectly configured

Control of brake on axis incorrectly configured

The brake control output refers to a terminal not used by the axis. The terminal assignment is incorrect.

Root Cause Summary

HEIDENHAIN alarm 230-04C5 occurs when the brake control output configured in the IOCP file does not match the actual hardware terminal assignment for the specified axis. This mismatch prevents proper brake control functionality and triggers the servo alarm during axis initialization or brake operation.

Safety

  • Refer to Heidenhain service manual
  • Ensure qualified technician performs repairs

Causes and Fixes

  1. 1

    Access IOCP configuration

    Navigate to MOD function → System Parameters → IOCP Configuration to review brake output assignments.

    Always backup the current IOCP file before making changes

  2. 2

    Verify brake output terminal

    Check the brake control output assignment for the affected axis in the IOCP file against the actual hardware wiring diagram.

    Ensure axis is properly secured before disconnecting brake power

  3. 3

    Correct IOCP assignment

    Modify the brake output terminal assignment in the IOCP file to match the actual hardware connection and reload the configuration.

  4. 4

    Test brake operation

    Perform a controlled brake test using the axis diagnostic functions to verify proper operation.

DIY Feasiblehigh confidence

Call a technician if:

  • ·IOCP file corruption cannot be resolved with backups
  • ·Hardware terminal damage suspected
  • ·Multiple axes affected simultaneously

Prevention

  • Always update IOCP when modifying brake wiring
  • Maintain current IOCP backups
  • Document all hardware terminal changes

Common Mistakes

  • Forgetting to reload IOCP after changes
  • Not verifying actual hardware connections
  • Assuming brake wiring matches original documentation

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