ABB LWT300 series, User Manual

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Configuring the instrument
43
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.