Roland R1000 Series Manual page 86

Communication with the PLC
Check whether the output OUT0 "Enable" has been switched to HIGH (ready for operation), otherwise there is a fault
condition.
Before starting a measurement all inputs must be switched to LOW for 30 milliseconds.
Switch the input IN0 "Measurement Start" to HIGH.
After 30 milliseconds the outputs OUT1-3 are switched to LOW for the duration of the measurement (systems reaction
time see chapter 2.2).
After point
The measurement result is available (after the systems reaction time t
the new action is initiated.
Example with "fast" PLC/BUS cycle time (smaller 20 milliseconds):
Check whether the output OUT0 "Enable" is switched to HIGH.
All the inputs must be in the LOW status for more then 30 milliseconds.
After that switch input IN0 "Measurement Start" to HIGH.
Check whether all outputs OUT1-3 switch within 30 milliseconds to LOW.
After that switch input IN0 to LOW.
Continue to interrogate the outputs OUT1-3 until (after the systems reaction time t
Example with "slow" PLC/BUS cycle time (larger 20 milliseconds):
Check whether the output OUT0 "Enable" is switched to HIGH.
All the inputs must be in the LOW status for more then 30 milliseconds.
After that switch input IN0 "Measurement Start" to HIGH.
After more than 30 milliseconds switch input IN0 "Measurement Start" to LOW.
Continue to interrogate the outputs OUT1-3 until (after the systems reaction time t
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86
Double Sheet Detector R1000 series E20
or 30 milliseconds after point
Manual
switch the input IN0 "Measurement Start" to LOW.
) at the outputs OUT1-3 and remains frozen until
s
B0046991 / Rev. 1.6
) the measurement result is available.
s
) the measurement result is available.
s