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Netzone
Netzone - Glossario
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

D

Data bus
System of lines over which data are transferred electronically in parallel or serially.

Data consistency
Intrinsic coherence of data in respect of timing and logical aspects.

Data integrity
Correspondence of data with the reality that they describe.

Datavalid
Output for checking the validity of data.

DC
Direct current (not alternating)

DC [=] (Counter)
DC [=] Direct current

Decimal point
Can be programmed in electronic counters

Demodulator
Device that filters the original information out of an altered signal again.

DeviceNet - conformity and interoperability
Confirmation of agreement of a bus node with the DeviceNet specifications and correct interoperability with other DeviceNet nodes.

Differential input
See count input

Differential line driver
Output circuit in which the difference between the two signals A and A is evaluated, thus providing high signal transmission reliability.

DIN
Deutsche Industrie Norm (German Industrial Standard)

DIR
Direction; see counter advance sense

Direction
Control input for determining the data sequence (whether ascending for clockwise or counterclockwise rotation).

Disable
Blocking of function (see also inhibit)

Display
Display

Display memory
A display value is "frozen" during counting (for easier reading during fast counts)

Dual Code
Natural binary code

Duty cycle [ED]
Ratio of pulse length to non-pulse period; at 40 % duty cycle, pulse length is 4/10 and non-pulse period 6/10 of total time (see specifications in technical data).

Dynamic behaviour
A function is triggered by a pulse (the pulse edge only is evaluated) at the corresponding dynamic input; the counter continues operation regardless of pulse width.


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Member of DIN ISO 9001 Unitec