K23-SSI/USB/25B-C | ELECTRICAL CONNECTIONS
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3.7 Parallel output (X5) / COM + (X3)
The parallel outputs are 25 short-circuit proof push-pull outputs. The common,
independent supply voltage of the outputs is applied to terminal X3 - pin 5 (COM
+). The supply voltage at COM + should not exceed +27 V, otherwise the
permanent short circuit restistance of the outputs can no longer be guaranteed.
The voltage drop between COM + and an output in the HIGH state is approx. 1
volt (unloaded).
3.7.1 Output „Error“
In the parallel menu using the “SPECIAL PIN FUNCTION” parameter the output
bit 25 (or Bit 24 - if a datastable signal is also configured) can also be set as
“Error” signal. In this case, a LOW signal (or HIGH signal) indicates that an error
has been detected.
3.7.2 Output “Data stable”
The output Bit 25 can also be configured as a “Data stable” signal by using
”SPECIAL PIN FUNCTION” parameter (in parallel menu). In this case a LOW
signal (or HIGH signal) indicates that parallel output data are stable and will not
change. The rising edge (or falling edge) of the signal still guarantees stable data
and can be used for remote Latch of the parallel data.
The LOW duration (or HIGH duration) of the signal is at least 1/3 of the "Parallel
Update Time (s)" set. The sketch below shows the signal path of the "Data
stable" output with the "Active Low" setting. With the "Active High" setting, the
signal curve is inverted accordingly.
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