SENA PS810 - Manual (Page 93)

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A 1.4. Serial Wiring Diagram
A 1.4.1. RS232 Serial Wiring Diagram
Tx(3)
Rx(2)
RTS(7)
CTS(8)
DTR(4)
DSR(6)
GND(5)
Rx
Tx
CTS
RTS
DSR
DTR
GND
HelloDevice Serial Device
RS232
Figure A-6 RS232 wiring diagram
A 1.4.2. RS422/485 Serial Wiring Diagram
*Data+ means that coupling of Tx+(1) pin and Rx+(2) pin
*Data- means that coupling of Tx-(6) pin and Rx-(8) pin
Figure A-7 RS485 wiring diagram