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