- RTD Embedded Technologies User's Manual switch CMX58886CX

92 CMX58886CX cpuModule BDM-610000050 Rev A

Table 63 COM1/COM2 (RS-232) — 9-Pin D Connector (male)

IDAN Pin # Signal Function Mode

1 DCD Data Carrier Detect Input

2RXD Receive Data Input

3 TXD Transmit Data Output

4 DTR Data Terminal Ready Output

5 GND Ground —

6 DSR Data Set Ready Input

7 RTS Request To Send Output

8CTS Clear To Send Input

9 RI Ring Indicator Input

Table 64 COM1/COM2 (RS-422/485) — 9-Pin D Connector (male)

IDAN Pin # Signal Function Mode

1Reserved— —

2RXD– Receive Data –Input

3 TXD– Transmit Data – Output

4Reserved— —

5 GND Ground —

6Reserved— —

7 TXD+ Transmit Data + Output

8RXD+ Receive Data +Input

9Reserved— —