Basic information about the drive system
13.7 Write protection
Drive functions
974 Function Manual, 11/2017, 6SL3097-4AB00-0BP5
Active write protection can be identified as in the expert list the input fields of adjustable
parameters p … are shaded gray.
Note
Know-how protection with active write protection
If write protection is active, the know
-how protection setting cannot be changed.
Note
Access via fieldbus
Per default, in spite of write protection, parameters can be changed via fieldbusses with
acyclic access. If write protection should also be active for access operations via
fieldbusses, then in the expert list, you must set p7762 to 1.
4. Select the "Copy RAM to ROM" icon to retentively save the settings.
Deactivating write protection
1. Go online.
2. Select the required drive unit in the project navigator of your STARTER project.
3. Call the shortcut menu "Write protection drive unit > Deactivate".
The hatching in the expert list disappears after deactivation. The parameters can be set
again.
4. Select the "Copy RAM to ROM"
icon to retentively save the settings.
Exceptions to write protection
Some functions are excluded from write protection, e.g.:
● Deactivating/activating the write protection
● Changing the access level (p0003)
● Saving parameters (p0971)
● Safe removal of the memory card (p9400)
● Restoring the factory setting
● Transferring the settings from an external data backup, e.g. upload into the drive unit from
a memory card.
The parameters where write protection does not apply can be found in the
SINAMICS S120/150 List Manual in Chapter "Parameters for write protection and know-how
protection", Subsection "Parameters with WRITE_NO_LOCK".
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