HSR High-availability seamless redundancy
HTTPS Hypertext Transfer Protocol Secure
HW Hardware
I/O Input/output
ICD IED capability description
IEC International Electrotechnical Commission
IEC 61850 International standard for substation communication
and modeling
IEC 61850-9-2 A communication protocol based on the IEC 61850
standard series
IED Intelligent electronic device
IET600 Integrated Engineering Toolbox
IID Instantiated IED description
Instance Identical protection function blocks available in a
standard configuration. By setting the application-
specific parameters of an instance, a protection function
stage can be established.
IP
Internet protocol
IP address A set of four numbers between 0 and 255, separated by
periods. Each server connected to the Internet is
assigned a unique IP address that specifies the location
for the TCP/IP protocol.
LAN
Local area network
LED Light-emitting diode
LHMI Local human-machine interface
LN Logical node
MAC Media access control
Modbus A serial communication protocol developed by the
Modicon company in 1979. Originally used for
communication in PLCs and RTU devices.
NCC Network control center
PC 1. Personal computer
2. Polycarbonate
PCL Product connectivity level
PCM600 Protection and Control IED Manager
PRP Parallel redundancy protocol
PST Parameter Setting tool in PCM600
Section 8 1MRS759117 A
Glossary
146 REX640
Engineering Manual
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