COMMELL HE-875P - Manual (Page 32)

HE-875P User’s Manual
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2.13 <Serial Port Jumper Setting >
The board provides three RS232 serial ports, with jumper selectable RS422/485 for
COM2.
Connector: CN_COM1/2
Type: 10-pin (5 x 2) 2.54mm x 2.54mm-pitch header for COM1/2
Pin Description Pin Description
1 DCD/422TX-/485- 2 RXD/422TX+/485+
3 TXD/422RX+
4 DTR/422RX-
5 GND 6 DSR
7 RTS 8 CTS
9 RI 10 N/C
JCSEL1 JCSEL2
RS-232
RS-485
RS-422
5 1
6 2
12 2
11 1
5 1
6 2
12 2
11 1
5 1
6 2
12 2
11 1
1
2
9 10