ABB Relion 615 series, Protocol Manual, Page: 44 / 48

LED Light-emitting diode
LHMI Local human-machine interface
LSB Least significant bit
MSB Most significant bit
NAK Negative acknowledgement
NCC Network control center
OTEV Disturbance recording triggered from start bit
PCM600 Protection and Control IED Manager
Reset CU Reset communication unit
Reset FCB Reset flow control bit
SOF Status of fault
SW Software
TEST Disturbance data recorded in test mode bit
TM Disturbance data transmission in progress bit
TP Disturbance data recorded with or without trip bit
VDEW6 Communication protocol standard for protection devices
VSQ Variable structure qualifier
WHMI Web human-machine interface
Section 5
1MRS759001 A
Glossary
38 615 series
Communication Protocol Manual