A.3 rs-232 standard serial port (com1~com2), Rs-232 standard serial port (com1~com2) – Advantech UNO 2173A/AF User Manual

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Appendix A

A.3 RS-232 Standard Serial Port (COM1~COM2)

Table A.4: RS-232 standard serial port pin assignments

Pin

RS-232 Signal Name

1

DCD

2

RxD

3

TxD

4

DTR

5

GND

6

DSR

7

RTS

8

CTS

9

RI