Appendix: Dip Switch Settings Reference - Elatec TWN4 MultiTech Nano Technical Handbook

A. Appendix: DIP Switch Settings Reference
A. Appendix: DIP Switch Settings Reference
Bit Function
1 Connect TWN4 MultiTech Nano to COM1 RX and RX out of RS232 transceiver.
These 2 sources are channeled to Nano Module through an AND-Gate. Unused port
will be pulled up to 3.3V.
2 Connect COM1 TX of TWN4 MultiTech Nano to RS232 transceiver. This also enables
COM1 TX LED*. Recommend setting to OFF when using COM1 connector (not RS232
transceiver).
3 Connect VREG to +3V3. This powers up the TWN4 MultiTech Nano (LEGIC 42).
4 Connect MGND to GND. This enables RS232 transceiver.
*Bit 1 of "COM2-LED & Speaker DIP Switch S220" must also be set to ON.
Bit Function
1 Enable COM-Side LEDs (Power-ON, COM port TX/RX traffic)
2 Enable Speaker on Development Board
3 Enable COM2 RX LED. Bit 1 must also be set to ON.
4 Enable COM2 TX LED. Bit 1 must also be set to ON.
Bit Function
1 Enable blue LED (Nano Module GPIO3)
2 Enable yellow LED (Nano Module GPIO2)
3 Enable green LED (Nano Module GPIO1)
4 Enable red LED (Nano Module GPIO0)
Table A.1.: COM1 & Power-ON DIP Switch S210
Table A.2.: COM2-LED & Speaker DIP Switch S220
Table A.3.: LED Connect DIP Switch S300
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