External Com Ports And Pin Definitions - Advantech PPC-415W User Manual

3.2

External COM Ports and Pin Definitions

COM1/COM2: RS-232
COM1/COM2 Pin 9 is set as "RI" by default. This setting can be changed to 5V or
12V output using a jumper.
Table 3.2: External COM Ports and Pin Definitions
Pin COM1/COM2
1 DCD
2 RXD
3 TXD
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9 RI or 5V/12V output
COM1
COM3
COM2
COM4/COM5
DCD
RXD
TXD
DTR
GND
DSR
RTS
CTS
RI
25 PPC-415W/421W User Manual
GPIO
GND
GPIO4
GPIO0
GPIO5
GPIO1
GPIO6
GPIO2
GPIO7
GPIO3