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Siemens Industry Online Support
Siemens AG
Entry type: FAQ Entry ID: 109764349, Entry date: 06/15/2020
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SINUMERIK: Why does error 15176 occur when calling an encrypted cycle

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After the protection of manufacturer or user cycles, an NCK reset must be performed.

With the program "Lock MyCycles" manufacturer or user cycles can be protected with different encryption levels.


After that, you must perform an NCK reset so that the controller can interpret the cycles correctly.
This is displayed with the message "15176 [Channel %1: ] Block %2 Program%3 may only be executed after Power ON". 

This message is no longer present after the NCK reset and the cycle is ready for processing.

If this message is still displayed and the cycles cannot be processed, then the machine date MD10700, which describes the program preprocessing level, is zero. Reset it to the default value (0x25) to re-enable preprocessing of these cycles.


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In order to protect technical infrastructures, systems, machines and networks against cyber threats, it is necessary to implement – and continuously maintain – a holistic, state-of-the-art IT security concept. Siemens’ products and solutions constitute one element of such a concept. For more information about cyber security, please visit
https://www.siemens.com/cybersecurity#Ouraspiration.
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