GOT317-502-FR
User’s Manual
Hardware and Installation
11
2.2.1 CLR_CMOS (Clear CMOS Jumper)
Use this jumper to clear the BIOS configuration and reset the CMOS values to factory defaults.
To clear the CMOS values, use a metal object like a screwdriver to touch the two pins for a few
seconds. (see Diagram 2-3).
Diagram 2-3
CMOS values
NOTE: Always turn off your computer and unplug the power cord from the power outlet
before clearing the CMOS values. After system restart, go to BIOS Setup to load
factory defaults (select Load Optimized Defaults) or manually configure the BIOS
settings.
2.2.2 COM Port Connector
The pin assignment for RS-232/ 422/ 485 is listed In Table 2-1.
Table 2-1 Pin assignment for RS-232/ 422/ 485
Pin
RS-232
RS-422
RS-485
1
DCD
TX-
Data-
2
RXD
TX+
Data+
3
TXD
RX+
No use
4
DTR
RX-
No use
5
GND
GND
GND
6
DSR
No use
No use
7
RTS
No use
No use
8
CTS
No use
No use
9
RI
No use
No use
