User guide

The internal connector assignment of the COM7 and COM8 is as follows:
PIN# COM7, COM8 intern
1 +P5V
2 GND
3 DCD
4 GND
5 CTS
6 DTR
7 RTS
8 TxD
9 DSR
10 RxD
11 RI
12 GND
13 +P12V
14 GND
15
PIN ASSIGNMENT