COMMELL HS-873P - Manual (Page 30)

HS-873P User’s Manual Hardware Setup
Digital Display 30
2.11
The board supports one RS232 serial port and one jumper selectable RS232/422/485 serial
ports. The jumper JCSEL1 & JCSEL2 can let you configure the communicating modes for
COM2.
Connector: CN_COM1
Type: 10-pin (5 x 2) 2.54mm x 2.54mm-pitch header for COM1
Pin Description Pin Description
1 DCD 2 RXD
3 TXD 4 DTR
5 GND 6 DSR
7 RTS 8 CTS
9 RI 10 N/C
Connector: CN_COM2
Type: 10-pin (5 x 2) 2.54mm x 2.54mm-pitch header for COM2
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
Setting RS-232, RS-422, RS-485 & IrDA:
Function JCSEL1 JCSEL2
IrDA
RS-422
RS-485
RS-232
8 2
7 1
2
1
12
11
1
2
7
8
1
2
7
8
1
2
7
8 2
1
12
11
1
2
11
12
1
2
11
12