Siemens SINUMERIK codes
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Siemens SINUMERIK Controller

Servo/Axis · Intermediate · 20-45 minutes

Alarm 12060

Siemens 840D 12060 - Channel block same G group programmed repeatedly

The G functions that can be used in the part program are divided into groups that are syntax defining or non-syntax defining. Only one G function may be programmed from each G group. The functions within a group are mutually preclusive. The alarm refers only to the non-syntax defining G functions. I

Siemens SINUMERIKServo/AxisIntermediate20-45 minutes

12060

Siemens 840D 12060 - Channel block same G group programmed repeatedly

Channel block same G group programmed repeatedly

The G functions that can be used in the part program are divided into groups that are syntax defining or non-syntax defining. Only one G function may be programmed from each G group. The functions within a group are mutually preclusive. The alarm refers only to the non-syntax defining G functions. I

Safety

  • Refer to Siemens documentation
  • Ensure qualified technician performs repairs

Common Causes

  • Programmer error: multiple non-syntax defining G functions from the same group programmed in the same block
  • Copy-paste error in part program creating duplicate G function codes
  • Improper use of G function modality across consecutive blocks without modal cancellation
  • CAM post-processor misconfiguration generating conflicting G codes
  • Manual program editing introducing redundant G function codes from same group

Troubleshooting Steps

  1. 1Locate the specific block number referenced in alarm message and review the G function codes programmed in that block
  2. 2Identify which G group contains the conflicting functions and verify only one function from that group is present per block
  3. 3Cross-reference the part program against CNC documentation to confirm G function group assignments and mutual exclusivity rules
  4. 4Examine the CAM post-processor output settings if part program was generated automatically, verify G code group logic
  5. 5Remove duplicate or conflicting G function codes from the identified block and verify program syntax before resuming execution

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