Advantech AIMB-780 - Watchdog Timer Output (JWDT1); Table 1.4: Watchdog Timer Output (JWDT1); Table 1.5: ATX;AT Mode Selector (PSON1); Table 1.6: COM3 RS-232;422;485 Mode Selector (JSETCOM3

AIMB-780 User Manual 12
1.8.3 Watchdog timer output (JWDT1)
The AIMB-780 contains a watchdog timer that will reset the CPU. This feature means
the AIMB-780 will recover from a software failure or an EMI problem. The JWDT1
jumper settings control the outcome of what the computer will do in the event the
watchdog timer is tripped.
Table 1.4: Watchdog timer output (JWDT1)
Function Jumper Setting
NC
* Reset
* default setting
Note! The interrupt output of the watchdog timer is a low level signal. It will be
held low until the watchdog timer is reset.
Table 1.5: ATX/AT mode selector (PSON1)
Function Jumper Setting
AT Mode
* ATX Mode
* default setting
Table 1.6: COM3 RS-232/422/485 mode selector (JSETCOM3)
Use JSETCOM3 to select the RS-232/422/485 mode for COM3. The default setting is RS-
232.
1-2 closed
123
2-3 closed
123
1-2 closed
123
2-3 closed
123
RS232 RS422 RS485