Roland R1000 Series Manual page 88

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 2.6).
The measurement result is available after the systems reaction time t
again.
The measurement result of the second measurement is available at the outputs. The measurement starts again.
Switch the input IN1 "Measurement Start" to LOW. The measurement is aborted, the last measurement result is now
available at the outputs OUT1-3. The measurement result is frozen until a new cycle 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.
Continue to interrogate the outputs OUT1-3 until (after the systems reaction time t
available.
If required interrogate several measurements.
Afterwards switch input IN0 to LOW.
The measurement is aborted, the last measurement result is now available at the outputs OUT1-3.
The measurement result is frozen until a new cycle is initiated.
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.
Continue to interrogate the outputs OUT1-3 until (after the systems reaction time t
available.
If required interrogate several measurements.
Afterwards switch input IN0 to LOW.
The measurement is aborted, the last measurement result is now available at the outputs OUT1-3.
The measurement result is frozen until a new cycle is initiated.
ROLAND ELECTRONIC GmbH · Otto-Maurer-Str. 17 · DE 75210 Keltern · Phone +49 (0)7236-9392-0 · Fax +49 (0)7236-9392-33
88
Double Sheet Detector R1000 series E20
Manual
at the outputs OUT1-3 and measurement starts
s
) the measurement result is
s
) the measurement result is
s
B0046991 / Rev. 1.6