Siemens SINUMERIK codes
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Siemens SINUMERIK Controller

Probing · Intermediate · 20-40 minutes

Alarm 15900

Siemens 840D 15900 - Channel block touch probe not allowed

Measure with deletion of distance-to-go In the part program, an illegal probe has been programmed with the command MEAS (measure with deletion of distance-to-go). The probe numbers 0. no probe 1. probe 1 2. probe 2 are allowed, whether the probe is actually connected or not. Example: N10 ME

Siemens SINUMERIKProbingIntermediate20-40 minutes

15900

Siemens 840D 15900 - Channel block touch probe not allowed

Channel block touch probe not allowed

Measure with deletion of distance-to-go In the part program, an illegal probe has been programmed with the command MEAS (measure with deletion of distance-to-go). The probe numbers 0. no probe 1. probe 1 2. probe 2 are allowed, whether the probe is actually connected or not. Example: N10 ME

Safety

  • Refer to Siemens documentation
  • Ensure qualified technician performs repairs

Common Causes

  • Probe number in MEAS command exceeds valid range (0-2)
  • Probe specified in part program is not configured in machine parameters
  • Syntax error in MEAS command with invalid probe designation
  • Incorrect probe assignment in channel configuration settings
  • Part program references probe that conflicts with active tool or spindle configuration

Troubleshooting Steps

  1. 1Review the part program at the indicated block number and verify MEAS command syntax uses only probe 0, 1, or 2
  2. 2Check machine parameter settings to confirm probe configuration matches the programmed probe numbers
  3. 3Verify probe hardware is properly connected and enabled in the channel configuration if probe-specific functionality is required
  4. 4Edit the part program to correct the probe number reference or remove the MEAS command if probing is not needed
  5. 5Clear the alarm, reload the corrected part program, and test with a dry run to confirm resolution

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Always verify with your machine manual or a certified technician before performing service procedures.