Siemens SINUMERIK codes
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Siemens SINUMERIK Controller

Program/G-code · Intermediate · 20-45 minutes

Alarm 14815

Siemens 14815 - Block negative thread pitch change programmed

A negative thread pitch change has been programmed Control reaction: Correction block is reorganized. Interface signals are set. Alarm display.

Siemens SINUMERIKProgram/G-codeIntermediate20-45 minutes

14815

Siemens 14815 - Block negative thread pitch change programmed

Block negative thread pitch change programmed

A negative thread pitch change has been programmed Control reaction: Correction block is reorganized. Interface signals are set. Alarm display.

Safety

  • Only qualified personnel should diagnose and clear control alarms; follow the machine builder's safety procedures and lockout/tagout where hardware work is required.

Common Causes

  • A negative thread pitch change has been programmed

Troubleshooting Steps

  1. 1Correct the value assignment.
  2. 2The programmed F value should be greater than zero.
  3. 3Zero is allowed but has no effect.
  4. 4Clear alarm with NC START or RESET key and continue the program

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