testo 6681 Profibus
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- 1.4 Operation
1.4.3 Password protection
The user menu can be protected with a four-digit numerical code (see Editing
Main Menu Settings, chapter 1.4.6.5, page 75) so that access to the user
menu is denied to unauthorized persons not familiar with this numerical code.
If the password protection is not to be used, the numerical code "0000" must
be entered. This is also the status upon delivery.