Chapter 1 Hardware Configuration
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Watchdog timer action (JP4)
When the watchdog timer activates (CPU processing has come to a
halt), it can reset the system. This can be set via setting JP4 as shown
below:
Table 1-7: Watchdog timer system reset select (JP4)
*System Reset
JP4
* default setting
1.8.4 COM2 settings for RS-232/422/485 (JP8)
Table 1-8: COM2 settings for RS-232/422/485 (JP8)
Pins closed
*RS-232
RS-422
RS-485
1 - 2
on
off
off
3 - 4
off
on
off
5 - 6
off
off
on
7 - 8
off
on
on
7 - 9
on
-
-
10 - 12
-
on
on
11 - 12
on
-
-
13 - 14
-
on
-
13 - 15
on
-
-
16 - 18
-
on
-
17 - 18
on
-
-
* default setting
1
2
3
