Siemens Sinamics G120 Operating Instructions Manual page 94

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6.7 Know-how Protection
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The screen will return to p7768 index 2 and shows the
value previously set.
Scroll down to p7768 index 29, and press "OK"
Because the password is less than 30 characters,
p7768 index 29 must contain the value 0.
Ensure that all digits are zero (0) and then press "OK"
The screen will return to p7768 index 29 and shows the
value previously set.
KHP is now active and the padlock icon appears in the
top right-hand side of the screen.
To deactive the KHP function input the password using p7766 (KHP passw input).
Operating Instructions, 03/2013, FW V1.4, A5E00110011A4 AB
Intelligent Operator Panel (IOP)