
Glossary
SIPROTEC, 6MU805, Manual
C53000-G1140-C380-5, Release date 06.2018
151
ID
Internal double-point indication
Double-point indication
ID_S
Internal double point indication intermediate position 00
Double-point indication
IEC
International Electrotechnical Commission
IEC address
Within an IEC bus a unique IEC address has to be assigned to each SIPROTEC device. A total of 254 IEC
addresses are available for each IEC bus.
IEC61850
Worldwide communication standard for communication in substations. This standard allows devices from dif-
ferent manufacturers to interoperate on the station bus. Data transfer is accomplished through an Ethernet net-
work.
Inter relay communication
IRC combination
IRC combination
Inter Relay Communication, IRC, is used for directly exchanging process information between SIPROTEC 4
devices. You require an object of type IRC combination to configure an Inter Relay Communication. Each user
of the combination and all the necessary communication parameters are defined in this object. The type and
scope of the information exchanged among the users is also stored in this object.
IRIG-B
Time signal code of the Inter-Range Instrumentation Group
List view
The right pane of the project window displays the names and icons of objects which represent the contents of
a container selected in the tree view. Because they are displayed in the form of a list, this area is called the list
view.
LV
Limit value
LVU
Limit value, user-defined