Comtrol DM ATS-XPe - Manual (Page 79)

Appendix C. Default System Values 79
Clearing the CMOS Setup
Clearing the CMOS Setup
If you need to clear the CMOS Setup. For example, if you forgot the password you
should clear the setup and then set the password again. You should close the JP1
jumper for about 3 seconds and then open it again. To set the CMOS back to
normal operation mode, open JP1.
Note: Use the screenshots in Changing BIOS Configuration on Page 83 to
reconfigure the factory default BIOS settings.
Applying Power to the AUX A Port
The AUX A (CN9) connector can supply +5V or +12V power to the serial devices
through the RI pin (Pin 8) of the COM2 (AUX A) port connector. The maximum
current is 1 A with fuse protection, from these two connector’s 5V/12V output. If
the output is set to 12V, make sure that you have 12V to supply to the board.
Changing the Watch-Dog Timer
The Watch-Dog Timer is a device used to ensure that standalone systems can
reset themselves and recover from catastrophic conditions that cause the CPU to
hang or crash. The Watch-Dog Timer is a countdown timer that will reset the CPU
when it times out.
The Watch-Dog Timer is enabled by reading port 443H. It should be triggered
before the time-out period ends, otherwise it will assume that the program
operation is abnormal and will issue a reset signal to restart, or activate NMI to
CPU. The Watch-Dog Timer is disabled by reading port 843H.
Note: Bold text that is shaded green illustrates the default value.
JP1 Description
1-2 Normal Operation.
2-3 Clear CMOS Setup.
CN9 Pin 8 (RS-232) JP13 JP12
RI Signal 2-3 Not applicable.
+5V 1-2 2-3
+12V 1-2 1-2
JP4 Watch-Dog Timer Settings Description
1-2 Activate NMI to CPU when WDT times-out.
2-3 Reset when WDT time-out.
Open Disable WDT.