Technical data

Manual
Double Sheet Detector R1000 series E20
B0046991 / Rev. 1.6
Communication with the PLC
ROLAND ELECTRONIC GmbH · Otto-Maurer-Str. 17 · DE 75210 Keltern · Phone [phone] · Fax [phone]
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6 Communication with the PLC
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The E20 has 9 (in case of 1P-control unit) or 11 (in case of a 4P-control unit) galvanically isolated
(opto coupled) inputs. For the 4 outputs relays or opto couplers are available as alternatives.
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6.1 PLC inputs
For external control parallel PLC inputs are available. These inputs can be operated via a PLC. If
several functions are executed at the same time, then the unit issues an fault message. The
following functions are possible:
• Measurement Start / Stop
• System test
• Menu selection
• Teach-in (not active as factory adjustment)
• Zero adjust (not active as factory adjustment)
6.2 PLC output signals
The following signals are available as outputs:
Opto coupler outputs
Signal Meaning Note
OUT3 0-sheet output Standard 24 V active (selectable in system configuration)
OUT2 1-sheet output Standard 24 V active (selectable in system configuration)
OUT1 2-sheet output Standard 24 V active (selectable in system configuration)
OUT0 ENABLE output Standard 24 V active (not selectable, for safety reasons)