Getting Started P746/EN GS/G31
MiCOM P746 (GS) 3-
11
GS
Level Meaning Read Operation Write Operation
2 Read All
Write Some
All data and settings are
readable.
Poll Measurements
All items writeable at level 1.
Setting Cells that change visibility
(Visible/Invisible).
Setting Values (Primary/Secondary)
selector
Commands:
- Reset Indication
- Reset Demand
- Reset Statistics
- Reset CB Data / counters
- Level 2 Password setting
3 Read All
Write All
All data and settings are
readable.
Poll Measurements
All items writeable at level 2.
Change all Setting cells
Operations:
- Extract and download Setting file.
- Extract and download PSL
- Extract and download MCL61850 (IED
Config - IEC61850)
- Extraction of Disturbance Recorder
- Courier/Modbus Accept Event (auto
event extraction, e.g. via A2R)
Commands:
- Change Active Group setting
- Close / Open CB
- Change Comms device address.
- Set Date & Time
- Switch MCL banks / Switch Conf. Bank
in user interface (IED Config -
IEC61850)
- Enable / Disable Device ports (in
SECURITY CONFIG column)
- Level 3 password setting
Table 2
Default passwords are blank for Level 1, BBBB for level 2 and AAAA for Level 3. Each
password is user-changeable once it has been correctly entered. Entry of the password is
achieved either by a prompt when a setting change is attempted, or by moving to the
‘Password’ cell in the ‘System data’ column of the menu. The level of access is
independently enabled for each interface, that is to say if level 2 access is enabled for the
rear communication port, the front panel access will remain at level 0 unless the relevant
password is entered at the front panel. The access level enabled by the password entry will
time-out independently for each interface after a period of inactivity and revert to the default
level. If the passwords are lost an emergency password can be supplied - contact Schneider
Electric with the relay’s serial number and security code. The current level of access enabled
for an interface can be determined by examining the 'Access level' cell in the 'System data'
column, the access level for the front panel user interface, can also be found as one of the
default display options.
The relay is supplied with a default access level of 3, such that no password is required to
change any of the relay settings. It is also possible to set the default menu access level to
either level 0 or level 1, preventing write access to the relay settings without the correct
password. The default menu access level is set in the ‘Password control’ cell which is found
in the ‘System data’ column of the menu (note that this setting can only be changed when
level 2 access is enabled).
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