Siemens SIPROTEC 4 7SJ61 Manual page 447

ID
Internal double point indication → Double point indication
ID_S
Internal double point indication, intermediate position 00 → Double point indication
IEC
International Electrotechnical Commission, international standardization body
IEC61850
International communication standard for communication in substations. The objective of this standard is the
interoperability of devices from different manufacturers on the station bus. An Ethernet network is used for
data transfer.
IEC address
Within an IEC bus a unique IEC address has to be assigned to each SIPROTEC 4 device. A total of 254 IEC
addresses are available for each IEC bus.
IEC communication branch
Within an IEC communication branch the users communicate on the basis of the IEC60-870-5-103 protocol via
an IEC bus.
Initialization string
An initialization string comprises a range of modem-specific commands. These are transmitted to the modem
within the framework of modem initialization. The commands can, for example, force specific settings for the
modem.
Inter relay communication
→ IRC combination
IntSP
Internal single point indication → Single point indication
IntSP_Ev
Internal indication Spontaneous event → Fleeting indication, → Single point indication
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 between the users is also stored in this object.
IRIG B
Time signal code of the Inter-Range Instrumentation Group
ISO 9001
The ISO 9000 ff range of standards defines measures used to assure the quality of a product from the develop-
ment stage to the manufacturing stage.
SIPROTEC 4, 7SJ61, Manual
C53000-G1140-C210-6, Edition 05.2016
Glossary
447