Disabling Access To The Service Account; Preventing Unwanted Deletion Of Data - ABB LWT300 Series User Manual

Disabling access to the Service account

In LWT instruments, the Service account allows access to service-specific functions usually reserved to
administrators and ABB troubleshooting experts. It is good practice to disable access to this account
and only allow a restricted number of users for this account as it could provide backdoor access and
amper the instrument cybersecurity protections. Only users with an Advanced account can perform this
procedure.
To disable the Service account:
1 Select Device Setup > Access Control > Service Account.
2 Press Edit.
3 Select Disabled and press OK.
The Service account is now disabled. It will not be available from the Access Level menu. To re-enable
the Service account, perform the same procedure, but select Enabled instead.

Preventing unwanted deletion of data

To prevent inadvertent or malicious overwriting of an instrument's settings and data, you can enable
software and/or hardware write protection; both are disabled by default.
NOTICE
Activating hardware write-protection prevents all forms of external access to the instrument.
Software write-protection
To enable software write-protection:
1 Select Device Setup > Access Control > Write Protect > Software WP.
2 Press Edit
3 Highlight On and press OK.
Data is now protected against erasing operations.
Hardware write-protection
NOTICE
Before performing this procedure, you can see if hardware write protection is already
activated by navigating to Device Setup > Access Control > Write Protect > Hardware WP.
To enable hardware write-protection:
NOTICE
DO NOT use a magnetic screwdriver.
1 On the instrument head, unscrew and remove the nameplate. This exposes two buttons and the
write-protection screw.
Configuring the instrument
43