Com2 Connector - Xycom 3400 Series Hardware Reference Manual

3408/3410/3412 Series Industrial PC System Manual

COM2 Connector

You can configure this port for use with one of three separate devices: the touch screen
controller, infrared (IR, IrDA) interface, or RS-232 connector. The BIOS setup deter-
mines whether COM2 is used for the RS-232 connector or the IR interface. Jumpers on
the touch screen controller select the COM2 or mouse ports. When the touch screen
controller is jumpered for COM2, COM2 is unavailable for other use.
This connector also contains the remote system reset option. A normally open pushbut-
ton switch can be connected to pins 11 and 7. When the switch is pressed, the
PB_RESET* signal is forced to GND, which causes the CPU to reset. To enable this op-
tion, you must set jumper J1 to position B.
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Pin Signal
1 ORB_GND
2 TXD2
3 RXD2
4 RTS2
5 CTS2
6 DSR2
7 GND
8 DCD2
9 NC
10 NC
11 PB_RESET*
12 NC
13 NC
14 NC
15 NC
16 NC
17 NC
18 NC
19 NC
20 DTR2
21 NC
22 RI2
23 NC
24 NC
25 NC