EMAC PCM-9340F-0CA1, Руководство пользователя, Страница: 18 / 118

PCM-9340 User’s Manual 10
2.2 COM2 Select (JP2)
2.3 Watchdog Timer Action (JP3)
An on-board watchdog timer reduces the chance of disruptions which
EMP (electro-magnetic pulse) interference can cause. This is an invalu-
able protective device for standalone or unmanned applications. Setup
involves one jumper setting and running the control software (refer to
Appendix A).
When the watchdog timer activates (CPU processing has come to a halt),
it can either reset the system or generate an interrupt on IRQ11. This
choice for watchdog timer action is set via JP3 as shown below:
Table 2.2: JP2: COM2 RS-232/422/485 Select
Pins Function
1-2* COM2/RS-232*
3-4 COM2/RS-422
5-6 COM2/RS-485
* default setting
RS-232* RS-422 RS-485
Table 2.3: JP3: Watchdog Timer
Pins Function
1-2* Reset
2-3
IRQ 11
* default setting
reset* IRQ 11
24
6
13
5
24
6
13
5
24
6
13
5