User Manual
Chapter 1
GFK-2849A
Oct 2019
Introduction
13
Figure 10
1.6
Glossary
Glossary
ACSE
Abstract Communication Service Event
ACSI
Abstract Communication Service Interface
SCSM
Specific Communication Service Mapping
Broadcast
In Ethernet, the transmission of a network message to all hosts on the network.
CID File
Configured IED Description (CID) files: Type of SCL file as defined in IEC 61850-
6standards
CPU
Central Processing Unit. In the context of this manual, CPU refers to an RX3i
controller
CPU Node
In a PACSystems RX3i IEC 61850 network, a CPU Node is a node that has a
PACSystems RX3i CPU in its rack and is connected to the IEC 61850 network.
DA
Data Attribute
DO
Data Object
ECM
Ethernet Communication Module
EGD
Ethernet Global Data, a client-server protocol that allows controllers to exchange
data with HMI workstations, historian systems, and other supervisory software
ECM850
IEC 61850 Ethernet Communication Module
FC
Functional Constraints
Gbps
Gigabits per second, or 1,000,000,000 bits per second, a measure of a
communication channel’s (such as Ethernet) signaling rate; 1 Gbps = 1000 Mbps
Gratuitous ARPs An Address Resolution Protocol (ARP) request sent by the host to resolve its own
IP address.
HMI
Human-
Machine Interface; typically, a graphical display that displays a system’s
status and alarms and allows operators to monitor and control system operation