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8 Checking Operation and Actual Operation
NX-series Safety Control Unit User’s Manual (Z930)
8-8 Security Settings
8
8-8-2 Data Protection
2 Enter the safety password in the Password Box. Enter the same password in the Confirm pass-
word Box, and click the OK Button.
The password is set.
Precautions for Correct Use
For security purposes, we recommend that you set a safety password for the Safety CPU Unit.
We recommend that you set text strings that contain both letters and numbers.
The login name and password are case sensitive.
Try not to use words that would be easily guessed by another person, words that are in diction-
aries, or text strings like abcdefg.
This section describes the data protection of the Safety CPU Unit.
Data Protection
The data protection function allows you to set passwords for individual data units to restrict display-
ing and changing them (access restrictions). You can enter the password to temporarily release the
protection from a data unit. Data protection is set and released offline.
Types of Access Restrictions
The following table describes the types of access restrictions.
Data That Can Be Protected
The following table lists the data that you can protect from being displayed and changed.
8-8-2 Data Protection
Access
restriction
Operation Remarks
Display prohi-
bition
The restricted data cannot be displayed. This restriction applies to jumping from other
windows, viewing search results, and print-
ing previews.
Change prohi-
bition
The restricted data cannot be changed. The
data can be displayed but not changed on
the display.
This restriction applies to changing or
replacing text in POU names.
Target data
Display prohibition Change prohibition
Display Change Display Change
Programs
Program names Possible. Not possible. Possible. Not possible.
Variable tables Not possible. Not possible. Possible. Not possible.
FBD editor Not possible. Not possible. Possible. Not possible.
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