ABB RELION REX640 - Page 159

HSR High-availability seamless redundancy
HTTPS Hypertext transfer protocol secure
HW Hardware
IEC International electrotechnical commission
IEC 60870-5-104 Network access for IEC 60870-5-101
IEC 61850 International standard for substation communication and modeling
IEC 61850-9-2 A communication protocol based on the IEC 61850 standard series
IEC 61850-9-2 LE Lite Edition of IEC 61850-9-2 offering process bus interface
IED Intelligent electronic device
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.
IRF
1. Internal fault
2. Internal relay fault
IRIG-B Inter-Range Instrumentation Group's time code format B
LAN Local area network
LCP Liquid crystal polymer
LCT Life cycle traceability
LED Light-emitting diode
LF Low frequency
LHMI Local human-machine interface
MMS
1. Manufacturing message specification
2. Metering management system
Modbus A serial communication protocol developed by the Modicon company in
1979. Originally used for communication in PLCs and RTU devices.
Modbus ASCII Link mode using 7-bit ASCII characters
Modbus RTU Link mode using 8-bit binary characters
NCC Network control center
OTP One-time password
PC
1. Personal computer
2. Polycarbonate
PCM600 Protection and control IED manager
PKI Public key infrastructure
PTP Precision time protocol
RAM Random access memory
RJ-45 Galvanic connector type
RoHS Restriction of hazardous substances
ROM Read-only memory
RS-485 Serial link according to EIA standard RS485
1MRS759118 D Glossary
REX640
Operation Manual
159