Com2 Select (Jp2); Watchdog Timer Action (Jp3) - EMAC PCM-9340F-0CA1 User Manual

2.2 COM2 Select (JP2)

Table 2.2: JP2: COM2 RS-232/422/485 Select
Pins
1-2*
3-4
5-6
* default setting
RS-232*

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 2.3: JP3: Watchdog Timer
Pins
1-2*
2-3
* default setting
PCM-9340 User's Manual
Function
COM2/RS-232*
COM2/RS-422
COM2/RS-485
Function
Reset
IRQ 11
reset*
RS-422
10
RS-485
IRQ 11