Backing up data and series commissioning
9.5 Write and know-how protection
Converter with control units CU250D-2
Operating Instructions, 04/2014, FW V4.7, A5E34261542B AA
271
Settings for the know-how protection
Activating know-how protection
Preconditions
● You are online with STARTER.
If you have created a project offline on your computer, you must download it to the
inverter and go online.
● You have inserted the recommended Siemens card. See also Section: Commissioning
tools (Page 25).
Proceed as follows to activate know-how protection:
Select the inverter in the STARTER project, and then select "Know
-how protection drive
unit/activate ..." in the shortcut menu (see also Write protection (Page 267)).
Enter your password. Length of the
password: 1
… 30 characters.
For the password, we recommend
that you only
use characters from
the ASCII character set. If you use
any character for the password,
then if changes are made to the
Windows language settings after
activating know
-how protection,
errors can occur when
subsequently checking the
password.
In this screen form, press the "Copy RAM to ROM" button. This means that you save
your settings so that they are protected against power failure.
You have activated know-how protection.
Backing up settings on the memory card
When the know-how protection is activated, you can save the settings via p0971 on the
memory card.
To do this, set p0971 = 1. The data is encrypted before being written to the memory card.
After saving, p0971 is reset to 0.