Chatter Blocking
A rapidly intermittent input (for example, owing to a relay contact fault) is disconnected after a parameteriz-
able monitoring time and therefore cannot generate any more signal changes. The function prevents the
system from overloading in the event of an error.
CID
Configured IED Description
CMV
Complex measured value
Combination Device
Combination devices are bay units with protection functions and with feeder mimic diagram.
Common Data Class
Generic term for a data class according to the IEC 61850 model.
Communication branch
A communication branch corresponds to the configuration of 1 to n participants communicating via a joint
bus.
Configured IED Description
A Configured IED Description (CID) is a file for data exchange between the IED Configuration Tool and the IED
itself.
Container
If an object contains other objects, this is referred to as a container. The object Folder for example is such a
container.
Continuous Function Chart
The Continuous Function Chart (CFC) is a programming language. It is used for programmable logic control-
lers. The programming language Continuous Function Chart is not defined in the standard IEC 61131-3, but
represents a current extension of IEC programming environments. CFC is a graphic programming language.
Function blocks are linked to one another. This represents an essential difference from conventional program-
ming languages, where sequences of commands are entered.
Control display
The control display becomes visible for devices with a large display after pressing the Control key. The diagram
contains the switching devices to be controlled in the feeder. The control display serves for implementing
switching operations. Specification of this diagram forms part of configuring.
Controllable Integer Status
The data type INC can be used to issue a command (to one or more relays, selectable under information
routing) that is monitored via a whole number as feedback.
Controller
The controller initiates the IO data communication.
CRC
Cyclic redundancy check
Glossary
SIPROTEC 5, Overcurrent Protection, Manual 1617
C53000-G5040-C017-8, Edition 07.2017
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