Terminology - ABB COM 610 *2.1 User Manual

1MRS755385
1.6.
Communication Gateway
User's Guide
• System prompts/messages and user responses/input are shown in the Courier
font. For example, if you enter a value out of range, the following message is
displayed:
Entered value is not valid. The value must be 0 to
30.
You may be told to enter the string MIF349 in a field. The string is shown as
follows in the procedure:
MIF349
• Variables are shown using lowercase letters:
sequence name

Terminology

The following is a list of terms associated with the Communication Gateway COM
610 that you should be familiar with. The list contains terms that are unique to ABB
or have a usage or definition that is different from standard industry usage.
Term
Alarm
Alarms and Events; AE
Data Access; DA
Data Object; DO
Device
Event
Logical Device; LD
Logical Node; LN
LON
OPC item
Substation
Configuration
Language; SCL
Description
An abnormal state of a condition.
An OPC service for providing information about system alarms
and events to OPC clients.
An OPC service for providing information about process data to
OPC clients.
Part of a logical node object representing specific information,
e.g., status or measurement. From an object-oriented point of
view, a data object is an instance of a class data object. DOs
are normally used as transaction objects; i.e., they are data
structures.
A physical device that behaves as its own communication node
in the network, e.g. protection relay.
Change of process data or an OPC internal value. Normally, an
event consists of value, quality and timestamp.
Representation of a group of functions. Each function is defined
as a logical node. A physical device consists of one or several
LDs.
The smallest part of a function that exchanges data. A logical
node is an object defined by its data and methods.
A communication protocol developed by Echelon.
Representation of connections to data sources, i.e. object
properties. An OPC item is identified by a string <object
path>:<property name>. Associated with each OPC item are
Value, Quality and Time Stamp.
XML based description language for configurations of electrical
substation IEDs. Defined in the IEC 61850 standard.
COM 610 *2.1
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