Section 6
Local HMI use
GUID-9D51F5A5-B05A-4BEC-9E71-8BD0BEB87764 v2
At delivery, logging on is not required and the user has full access until users and
passwords are created with PCM600 and written into the IED. The LHMI is logged
on as SuperUser by default until other users are defined.
Commands, changing parameter values and resetting indications, for example, are
actions requiring password when the password protection is activated. Reading
information on the LHMI is always allowed without password. The LHMI is
logged on as Guest by default when other users are defined.
Utility security policies and practical consideration should always
be taken on the feasibility of using passwords. In emergency
situations, the use of passwords could delay urgent actions. When
security issues must be met, the two factors must be seriously
considered.
The auxiliary power supply to the IED must not be switched off
before changes such as passwords, setting parameter or local/
remote control state changes are saved.
6.1
Logging on
GUID-E0F937A9-78EC-4528-AB34-FD6EC79A7815 v1.1.1
1.
Press
to activate the logon procedure.
The logon is also activated when attempting a password-protected operation.
2.
Select the user name by scrolling with
and
.
IEC12000161-3-en.vsd
IEC12000161 V3 EN-US
Figure 22:
Selecting the user name
3.
Enter the password when prompted and select
OK
.
•
Activate the character to be entered with
and
.
•
Enter the character with
and
.
1MRK 511 454-UEN A
Section 6
Local HMI use
GMS600 1.3
37
Cyber security deployment guideline
