COMMELL HE-860 - Manual (Page 19)

HE-860 User’s Manual 19
2.10 Serial Port COM2 Mode Configuration
The board offers two serial ports including one RS232 COM1 and one jumper
selectable RS232/422/485 COM2. The configuration of COM2 can be setting
with jumpers JCSEL1 (JCSEL) and JCSEL2 (J2).
Jumper: JCSEL1 (JCSEL), JCSEL2 (J2)
Type: onboard 6-, 12-pin header
COM2 Mode JCSEL2 (J2) JCSEL1 (JCSEL)
RS-232 1-2 1-2/4-5/7-8/10-11
RS-422 5-6 2-3/5-6/8-9/11-12
RS-485 3-4 2-3/5-6/8-9/11-12
Default setting
Connector: JCOM2
Type: 10-pin header
Pin RS232 RS422 RS485 Pin RS232 RS422 RS485
1 DCD TX- 485- 2 RXD TX+ 485+
3 TXD RX+ N/C 4 DTR RX- N/C
5 Ground N/C N/C 6 DSR N/C N/C
7 RTS N/C N/C 8 CTS N/C N/C
9 RI N/C N/C 10 N/C N/C N/C
1 2
5 6
JCSEL2
JCSEL1
10
11
12 1
2
3
2
1 10
9
JCOM2