Backing up data and series commissioning
9.5 Write and know-how protection
Converter with control units CU250D-2
270 Operating Instructions, 04/2014, FW V4.7, A5E34261542B AA
Actions that are possible during active know-how protection
● Restoring factory settings
● Acknowledging messages
● Displaying messages
● Show message history
● Reading out diagnostic buffer
● Switching to the control panel (complete control panel functionality: Fetch master control,
all buttons and setting parameters)
● Upload (only parameters that are accessible even though know-how protection is active)
The individual parameters that are excluded from the know-how protection can be found in
the List Manual in Chapter "Parameters for write protection and protection of know-how".
Commissioning the converter with know-how protection
Procedure - overview
1. Commission the converter.
2. Create the exception list (Page 273).
3. Activate the know-how protection (Page 271).
4. Save the settings in the converter by copying RAM to ROM with
or via p0971 = 1.
5. Save the project with
on the PG/PC. Also back up any other project-related data
(machine type, password, etc.) that may be required for the support of the end customer.
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