Elatec TWN4 MultiTech Nano Technical Handbook page 13

A. Appendix: Connector Pinout Reference
The Relay port can be used together with Generic Clock/Data port for debug or demonstration purposes.
"Card-In-Reader" pin of the Generic port switches the Relay on/off.
GPIO 4 = HIGH ->
GPIO 4 = LOW ->
Pin Pin Name
1 D0 / Data
2 D1 / Clock
3 CIR
4 GND
Table A.3.: Generic Output Clock/Data Port (X601) Pin Configuration
Pin Pin Name
1 O (Open)
2 C (Common)
3 S (Short)
4 IN1
5 GND
CIR = LOW -> Relay Port Short pins 2-3
CIR = HIGH -> Relay Port Short pins 1-2
Function
Wiegand D0 Port. OMRON Data. Driven by GPIO 5 of Nano Module.
Inverse Relationship: D0 = ~GPIO 5
Wiegand D1 Port. OMRON Clock. Driven by GPIO 6 of Nano Module.
Inverse Relationship: D1 = ~GPIO 6
Card-In-Reader. Driven by GPIO 4 of Nano Module.
Inverse Relationship: CIR = ~GPIO 4
Ground shared with I/O Extender and Development Board.
Function
Open when CIR=0V (LOW), shorted to Pin (2) when CIR=5V (HIGH).
Common pin within Relay, to be connected to either pin 1 or 3 depend-
ing on Generic Port pin CIR.
Shorted to Pin (2) when CIR=0V (LOW), open when CIR=5V (HIGH).
Connected to GPIO 7 of Nano Module with no inversion. Can be driven
Low by on-board push-button.
Ground shared with I/O Extender and Development Board.
Table A.4.: Relay Port (X600) Pin Configuration
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