Siemens SINUMERIK codes
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Siemens SINUMERIK Controller

Servo/Axis · Intermediate · 30-120 minutes

Alarm 61151

Siemens 840D 61151 - Channel block: Orientation of tool not possible --> error code

Alarm 61151 fires when CYCLE800 attempts to orient the tool using a swivel plane configuration that violates the machine's kinematic constraints or parameter settings. The NCK detects an incompatible orientation command where only additive swivel (incremental) is permitted, as defined by machine data parameter _ST (swivel type).

Siemens SINUMERIKServo/AxisIntermediate30-120 minutes

61151

Siemens 840D 61151 - Channel block: Orientation of tool not possible --> error code

Channel block: Orientation of tool not possible --> error code

Siemens SINUMERIK alarm 61151: Channel block: Orientation of tool not possible --> error code. This alarm indicates a fault or error condition on the SINUMERIK 840D control. Refer to the Siemens SINUMERIK alarm documentation for the complete description and remedy.

Root Cause Summary

Alarm 61151 fires when CYCLE800 attempts to orient the tool using a swivel plane configuration that violates the machine's kinematic constraints or parameter settings. The NCK detects an incompatible orientation command where only additive swivel (incremental) is permitted, as defined by machine data parameter _ST (swivel type).

Safety

  • Refer to Siemens documentation
  • Ensure qualified technician performs repairs

Causes and Fixes

  1. 1

    Review CYCLE800 call in NC program. Verify the orientation parameter (typically CYCLE800 with ANG or ANGL argument) is using additive mode (G91 active or use delta values). Check DIN/ANSI semantics in the part program.

    Absolute swivel commands (G90) combined with CYCLE800 will trigger 61151 on additive-only machines.

  2. 2

    Access SINUMERIK HMI: Diagnostics > Machine Data > search parameter MD20055 (_ST). Confirm value matches machine kinematic design (typically 1=additive, 2=absolute/additive mixed). Document current setting.

  3. 3

    If machine supports absolute swivel, verify MD20055 is set correctly. If machine is additive-only, modify NC program to use additive swivel syntax or ensure G91 is active before CYCLE800.

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