Festo Controller CECC-D User Manual

Festo Controller CECC
37
Comparator settings
The current position value of the encoder is compared with the upper and lower compare value. The result
is immediately set at a digital output of the I/O interface.
Parameter Setting Comment
Comparator
to output
– Condition for the
signal curve at the
digital output
The output set under the "Digital Output" parameter is used.
Possible signal curves:  Figure: Digital output as a function of
the "Comparator to output" parameter 3 -8.
Pulse
lengthening
– Setting in µs Pulse lengthening for the comparison:
– Counter value = lower compare value
(with pulse lengthening)
The purpose of pulse lengthening is to improve signal detection.
It can be defined with an accuracy of 1 µs. Maximum value: 8 s
 Figure: Digital output as a function of the "Comparator to
output" parameter9.
Hysteresis – Between 0 and 255
increments
The purpose of hysteresis is to prevent fluttery signals. The
value is used in positive and negative direction Figure: Digital
output as a function of the "Hysteresis" parameter.
Digital output – No digital output
– Number of the
digital output
Defines a digital output that is switched by the comparator.
Digital output
polarity
– Not inverted
– Inverted
Setting for the output signal polarity.

Festo Controller CECC-D Specifications

General

Brand	Festo
Model	Controller CECC-D
Category	Controller
Language	English