Table 1.4: Watchdog Timer Output (Jwdt1); Watchdog Timer Output (Jwdt1); Com2 Rs 232/422/485 Mode Selector (Jsetcom2); (Jsetcom2) - Advantech PCE-5120 User Manual

1.8.3 Watchdog timer output (JWDT1)

The PCE-5120 contains a watchdog timer that will reset the CPU in the
event the CPU stops processing. This feature means the PCE-5120 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
Reserved
* Reset
*default setting

1.8.4 COM2 RS 232/422/485 mode selector (JSETCOM2)

Users can use JSETCOM2 to select among RS 232/422/485 modes for
COM2. The default setting is RS 232.
Table 1.5: COM2 RS 232/422/485 mode selector (JSETCOM2)
COM 2 Port Function
RS-232 *
RS-422
RS-485
*default setting
PCE-5120 User Manual
Jumper Setting
1
1
Jumper Configuration
17 15 13
18 16 14
17 15 13
18 16 14
17 15 13
18 16 14
12
1-2 closed
2-3 closed
11 9 7 5 3
12 10 8 6 4
11 9 7 5 3
12 10 8 6 4
11 9 7 5 3
12 10 8 6 4
1
2
1
2
1
2