Manual
Double Sheet Detector R1000 series UDK20
Communication with the PLC
B0048991 / Rev. 1.3
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Check whether the output OUT0 „Enable“ has switched to HIGH (ready for operation), otherwise there is a fault
condition.
Before starting a measurement, all inputs must be LOW for 30 ms.
Switch the input IN1 „Measurement Start“ to HIGH.
After 30 ms the outputs OUT 1-3 have switched to HIGH for the duration of the measurement
(system reaction time, see chapters 2.2 - depending on material and thickness).
After point
or 30 ms after point
switch the input IN1 „Measurement Start“ to LOW.
The measurement result is available (after the system reaction time t
s
) at the outputs OUT1-3, it remains frozen
until the new action is initiated.
Example with „fast“ PLC / BUS cycle time (< 20 ms):
Check whether the output OUT0 „Enable“ has switched to HIGH.
All inputs must be LOW for more then 30 ms.
After that switch input IN1 „Measurement Start“ to HIGH.
Check whether all outputs OUT1-3 switch to HIGH within 30 ms.
After that, switch input IN1 to LOW.
Continue to interrogate the outputs OUT1-3, until (after system reaction time t
s
) the measurement result is available.
Example with „slow“ PLC / BUS cycle time (> 20 ms):
Check whether the output OUT0 „Enable“ has switched to HIGH.
All inputs must be LOW for more then 30 ms.
After that, switch input IN1 „Measurement Start“ to HIGH.
After more than 30 ms switch input IN1 „Measurement Start“ to LOW.
Continue to interrogate the outputs OUT1-3, until (after system reaction time t
s
) the measurement result is available.
