Siemens SINAMICS Intelligent Operator Panel Operating Instructions Manual page 102

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6.9 Know-how Protection
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The screen will return to p7768 index 0 and shows the
value previously set.
Select the next index and then press "OK" to edit the
index.
Enter the ASCII code for "a" (97), then press "OK"
The screen will return to p7768 index 1 and shows the
value previously set.
Select the next index and then press "OK" to edit the
index.
Operating Instructions, 08/2015, FW V1.6.1, A5E00110011B AF
Intelligent Operator Panel (IOP)