Glossary
SICAM A8000 / CP-8000 • CP-8021 • CP-8022 Manual Unrestricted 607
DC8-037-2.02, Edition 10.2017
Command return information
The command return information is an additional information for the double-point information, displays the
reason for the status change (breaker tripping or switching operation in progress)
Configuration
Configuration is used in a multiple meaning:
a) engineering of the configuration of an automation unit in the engineering tool
b) physical aligning and mounting of the configured hardware
– plugging in the slot defined by the configuration (slot addressing), or
– setting the address defined by the configuration, and plugging in an arbitrary slot (adjustable address)
COT
ž Cause of Transmission
CPU
Central Processing Unit
CTS
Clear to Send, handshake control line of an RS-232 interface
Cyclic transmission
Periodical transmission according to the scan rate of the application program
D
Data class
This assignment is specified in the standard IEC 60870-5-101/-104, and serves for the priorization of in-
formation objects for the transmission by the communication function:
ž Class 1 data
ž Class 2 data
Dataflow routing
Functions and methods for distribution of messages to ist targets:
ž Automatic data flow routing
ž Selective data flow routing
Datapoint
Analog or binary information (process data point, System data point)
Data stream
Transports a sequence of data-point related information through the telecontrol system from a source to
one or more sinks.
There are spontaneous and periodical data streams. (spontaeous data strems transport information in tel-
egrams)
Datentransporter and system message router
System-internal distribution point for application data and system data messages from and to the single
systemfunctions resp. application; application data is distributed by means of routing, system data by
means of target addressing to the data sinks
DCD
Data Carrier Detect; control line of a RS-232 interface for the evaluation of the receive signal level
DCE
Data Communications Equipment; for example a modem
DDC
Data Distribution Center; Tool for the export, import and/or administration of SICAM TOOLBOX II data
Detailed diagnostic record
Comprises 16 diagnostic bits (of a system diagnostic class) that commonly belong logically together
Detailed diagnostic table
Contains all diagnostic bits recognized by the system elements
DI
ž Digital input
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