Festo Controller CECC 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 Specifications

General

Brand	Festo
Model	Controller CECC
Category	Controller
Language	English