ABB Relion 630 Series Communication Protocol Manual page 300

Section 8
Glossary
294
IET600 Integrated Engineering Toolbox
ISO International Standard Organization
LD Logical device
LD0 Logical device zero (0)
LHMI Local human-machine interface
LLN0 Logical node zero (0)
LN Logical node
Logical device Also known as LD. Representation of a group of functions.
Each function is defined as a logical node. A physical device
has one or several LDs.
Logical node Also known as LN. The smallest part of a function that
exchanges data. An LN is an object defined by its data and
methods.
MICS Model implementation conformance statement
MMS 1. Manufacturing message specification
2. Metering management system
NCC Network control center
PCM600 Protection and Control IED Manager
PICS Protocol implementation conformance statement
PIXIT Protocol implementation extra information for testing
PST Parameter Setting tool in PCM600
SBO Select-before-operate
SCD Substation configuration description
SCL XML-based substation description configuration language
defined by IEC 61850
SMT Signal Matrix tool in PCM600
SNTP Simple Network Time Protocol
ST Connector type for glass fiber cable
stVal Status value
TCP/IP Transmission Control Protocol/Internet Protocol
WHMI Web human-machine interface
XML Extensible markup language
1MRS756793 E
630 series
Communication Protocol Manual