Expert
Logger
Position counter
: When the level is high at the input specified for
Direction
, each rising edge increases the counter by one, or decreases the
counter by one if the level is low.
Quadrature decoder
: The counter is increased by one if the signal at this
input (
A
) has an edge before the signal at the input specified for
B
. Other-
wise, the counter is reduced by one (signal
B
before signal
A
). Depending
on the quadrature mode, the following will be evaluated (counted): only
the rising edge of signal
A
(
1x
), both edges of signal
A
(
2x
), or all edges of
the signals
A
and
B
.
You can use the function, for example, to determine the rotation angle at a
gear via two sensors. For this purpose, the sensors must be offset by 90
degrees of a vibration (360 degrees). That is, for example, they must be
aligned to the tooth and the centre between the tooth and gap and must out-
put the distance as tooth (1) or gap (0). Use the 4x setting in the case of
few teeth in order to improve the angle resolution. Note the maximum fre-
quency of the input when dealing with many teeth or high rotation speeds.
Reset
Select an available channel via
Channel
that will reset the counter with a
rising edge. In the case of
Application
, you can achieve this via DataSer-
vice Configurator or a
ProfiSignal
application. But note the time delay
that is created by the transmission via the interface.
Info
For activating
Persistence
in the
Additional settings
tab, e.g. in the
event of power outage, the last counter reading is saved and count-
ing resumes from this point.
4.10.2.2
Frequency
This channel determines the frequency of the signal applied.
108
Delphin Technology AG
Januar 2018
Expert
Logger
Manual
