Roland R1000 Series Manual page 90

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 initiating zero adjust all inputs must be switched to LOW for 30 milliseconds. There should be no sheet in front of
the sensor.
Switch the input IN2 "Zero adjust" to HIGH.
Within 30 milliseconds the outputs OUT1-3 are switched to HIGH.
After point 4 or 30 milliseconds after point 3 switch the input IN2 "Zero adjust" to LOW.
Now the unit performs a zero adjust. The zero adjust is completed within 7s and the outputs OUT1-3 switch to LOW.
Example:
Check whether the output OUT0 "Enable" has been switched to HIGH.
No sheet should be in front of the sensor. All inputs should be on LOW for more than 30 milliseconds.
Now switch input IN2 to HIGH.
After 30 milliseconds check whether outputs 1-3 have been switched to HIGH.
Now switch input IN2 to LOW.
After >7 seconds check whether the outputs 1-3 have been switched to LOW.
ROLAND ELECTRONIC GmbH · Otto-Maurer-Str. 17 · DE 75210 Keltern · Phone +49 (0)7236-9392-0 · Fax +49 (0)7236-9392-33
90
Double Sheet Detector R1000 series E20
Manual
B0046991 / Rev. 1.6