ABB COM600 series, Data Historian Operator'S Manual

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Terminology 1.6.
The following is a list of terms associated with COM600 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.
Description Term
An abnormal state of a condition. Alarm
An OPC service for providing information about alarms and
events to OPC clients. Alarms and Events; AE
An OPC service for providing information about process data to
OPC clients. Data Access; DA
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 struc-
tures. Data Object; DO
The data set is the content basis for reporting and logging. The
data set contains references to the data and data attribute val-
ues. Data Set
A physical device that behaves as its own communication node
in the network, e.g. protection relay. Device
Change of process data or an OPC internal value. Normally, an
event consists of value, quality and timestamp. Event
A physical IEC 61850 device that behaves as its own commu-
nication node in the IEC 61850 protocol. Intelligent Electronic Device
Representation of a group of functions. Each function is defined
as a logical node. A physical device consists of one or several
LDs. Logical Device; LD
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COM600 series, Version 5.0
1MRS756739
Data Historian Operator's Manual