Siemens SINUMERIK codes
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Siemens SINUMERIK Controller

Program/G-code · Basic · 10-20 minutes

Alarm 16905

Siemens 16905 - Program control: action <ALNX> not allowed

Operation cannot be started or continued. A start is only accepted when an NCK function can be started. Example: A start is accepted in JOG mode when, for example, the function generator is active or a JOG movement has first been stopped with the Stop key Control reaction: Alarm reaction in Automatic mode.

Siemens SINUMERIKProgram/G-codeBasic10-20 minutes

16905

Siemens 16905 - Program control: action <ALNX> not allowed

Program control: action <ALNX> not allowed

Operation cannot be started or continued. A start is only accepted when an NCK function can be started. Example: A start is accepted in JOG mode when, for example, the function generator is active or a JOG movement has first been stopped with the Stop key Control reaction: Alarm reaction in Automatic mode.

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

  • Operation cannot be started or continued.
  • A start is only accepted when an NCK function can be started.
  • Example: A start is accepted in JOG mode when, for example, the function generator is active or a JOG movement has first been stopped with the Stop key

Troubleshooting Steps

  1. 1Check the program status and channel status.
  2. 2Clear alarm with the Delete key or NC START

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