User`s manual

AIMB-740-B/741-B User’s Manual 12

1.8.3 Watchdog timer output (J2)

The AIMB-740-6CB1 contains a watchdog timer that will reset the CPU

or send a signal to IRQ11 in the event the CPU stops processing. This fea-

ture means the AIMB-740-6CB1 will recover from a software failure or

an EMI problem. The J2 jumper settings control the outcome of what the

computer will do in the event the watchdog timer is tripped.

1.8.4 RS 232/422/485 Selection

Table 1.4: Watchdog timer output (J2)

Function

Jumper Setting

IRQ11

* 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.

1-2 closed

2-3 closed