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R O L A N D
Rev. 1.0
6. Communication with the PLC
The UDK20 has 9 potential-free, galvanically insulated (opto coupled) inputs. For the 4 outputs there are
relays or opto couplers available as alternatives.
6.1 External control
For external control parallel PLC inputs are available. If several functions are executed at the same time,
then the unit issues a fault message. The following functions are possible:
- Measuring Start / Stop
- System test
- Selection of measuring programs
- Teach-in (not active by default)
- Zero adjust (not active by default)
Notes for the following diagrams and explanations:
For all the following diagrams and explanations, in the configuration menu item 11 „Level 0-1-2" the setting
„0V" was selected.
If „24V" was selected, the outputs OUT1, OUT2 and OUT3 become inverted. Enable OUT0 will not be
affected by this.
HIGH Level at the outputs means „relay contacts closed" respectively „opto coupler low resistive".
LOW Level at the outputs means „relay contacts open" respectively „opto coupler high resistive".
ROLAND ELECTRONIC GMBH · Otto-Maurer-Str. 17 · D-75210 Keltern · Telefon (0049) (07236) 9392-0 · Telefax (0049) (07236) 9392-33
OPERATING INSTRUCTIONS
DOUBLE SHEET DETECTOR R1000 UDK20
Page 61
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