Siemens SINUMERIK codes
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Siemens SINUMERIK Controller

Servo/Axis · Intermediate · 20-45 minutes

Alarm 14549

Siemens 840D 14549 - Channel block contour tool: impermissible programming. Code

Impermissible programming has been found for contour tools on active tool radius compensation. The error cause is explained in detail by the error code. 1: In G code group 17, KONT is active during activation 2: In G code group 17, KONT is active during deactivation 9: In G code group 40, CUTCONOF i

Siemens SINUMERIKServo/AxisIntermediate20-45 minutes

14549

Siemens 840D 14549 - Channel block contour tool: impermissible programming. Code

Channel block contour tool: impermissible programming. Code

Impermissible programming has been found for contour tools on active tool radius compensation. The error cause is explained in detail by the error code. 1: In G code group 17, KONT is active during activation 2: In G code group 17, KONT is active during deactivation 9: In G code group 40, CUTCONOF i

Safety

  • Refer to Siemens documentation
  • Ensure qualified technician performs repairs

Common Causes

  • KONT (contour tool compensation) activated or deactivated while G17 plane selection is active instead of G18 or G19
  • Attempting to enable/disable contour tool radius compensation in wrong plane selection group
  • G40 (cancel tool radius compensation) issued while contour tool programming rules are violated
  • Mixed use of standard tool radius compensation (G41/G42) with contour tool compensation (KONT) in same block or improper sequence
  • Contour tool compensation activated during plane selection change rather than after plane is established

Troubleshooting Steps

  1. 1Review the NC program around the flagged block number and identify all G17/G18/G19 plane selection commands preceding KONT activation/deactivation
  2. 2Verify contour tool compensation (KONT) is only activated or deactivated when G18 or G19 is active, not G17
  3. 3Check that G40 cancellation of tool compensation occurs in proper sequence and that no conflicting compensation modes are active
  4. 4Confirm tool offset table entries match the tool type (standard vs contour) and that tool selection aligns with compensation method used
  5. 5Restructure NC program to ensure plane selection is established before any KONT commands, and standard G41/G42 and KONT are not mixed in transition blocks

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