Advantech PCA-6743, User Manual

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45 PCA-6743 User Manual
Appendix A
P
in Assignments
A.3 Serial Ports (COM2)
A.4 Serial Ports (COM34)
Table A.3: Serial Ports (COM2)
Pin Signal
RS232 RS422 RS485
1 DCD TXD- Data-
2 DSR NC NC
3 RX TXD+ Data+
4 RTS NC NC
5 TX RXD+ NC
6 CTS NC NC
7 DTR RXD- NC
8 RI NC NC
9 GND GND GND
3
6 4
5
2 8
9
7
1
Table A.4: Serial Ports (COM34)
Pin Signal Pin Signal
1 DCD3 2 DSR3
3 RX3 4 RTS3
5 TX3 6 CTS3
7 DTR3 8 RI3
9 GND 10 GND
11 DCD4 12 DSR4
13 RX4 14 RTS4
15 TX4 16 CTS4
17 DTR4 18 RI4
19 GND 20 GND
17 1
2 18
3
4 20
19