Com2 Rs232-422-485 Select (J3); Watchdog Timer Configuration; Watchdog Timer Output Option (J2) - Advantech PCI-6872 User Manual

2.7 COM2 RS232-422-485 Select (J3)

Table 2.4: COM2 RS232-422-485 Select
PIN
1-2
3-4
5-6

2.8 Watchdog timer configuration

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 and running the control software (refer to Appendix
A).

2.8.1 Watchdog timer output option (J2)

When the watchdog timer activates (CPU processing has come to a halt),
it can reset the system or generate an interrupt on IRQ11. This can be set
via setting J2 as shown below:
Table 2.5: Watchdog timer output option (J2)
*System reset
* default setting
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RS232* RS422
Closed Open
Open Closed
Open Open
14
RS484
Open
Open
Closed
IRQ 11