PANEL1000-370 All-in-One PANEL PC User’s Manual
System Installation
12
3.4 4 x Serial Ports
The PANEL PC 1000 provides four onboard serial ports installed on
the bottom rear side of the chassis. Arrangements on PANEL PC
1000 specify COM1, COM2, COM3 providing RS-232 interface, and
with its RS-422/485 interface connected to COM4. Each serial port
comes with +5V/+12V power capabilities on both Pin 1 and Pin 9,
ready to accommodate a wide array of serial devices such as fax
modem, scanner, serial mouse, touch screen...etc. If the touch
screen option is included, its controller will share COM3.
COM1 to COM4 are all D-SUB 9-pin connectors. To attach to any
serial device, just plug in the device connector to the 9-pin D-SUB. In
terms of transmission distance, the RS-422/485 will perform better
than RS-232. In this case, the COM2 is suggested to be set to
RS-422/485 and the related jumpers have to be set correctly first (see
the system board User’s Manual). The RS-485 pin assignment is
listed below.
Signal Name
Pin #
R2-422 RS-485
1
TX- DATA-
2
TX+ DATA+
3
RX+ No
connector
4
RX- No
connector
5
GND GND
6
No connector No connector
7
No connector No connector
8
No connector No connector
1
2
3
4
5
6
7
8
9
9
No connector No connector
