Advantech PPC-A84, Руководство пользователя

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42 PPC-A84 User's Manual
3.6.1 Watchdog activity selection (JP2)
When the watchdog timer activates (i.e. CPU processing has come to a halt),
it can reset the system or generate an interrupt on IRQ11. This can be set via
jumper JP2 as shown below:
Table3-5: Watchdog activity selection (JP2)
System reset IRQ11
* default setting
3.7 COM2 RS-232/422/485 setting (JP3, JP4,JP5)
COM2 can be configured to operate in RS-232/422/485 mode. This is done
via JP3,JP4,and JP5.
Table 3-6: COM2 RS-232/422/485 setting (JP3, JP4)
*RS-232 RS-422/485
JP4 JP4
JP3 JP3
* default setting
Table 3-7: COM2 RS-232/422/485 setting (JP5)
*RS-232 RS-422 RS-485
*default setting
2 4 6
2 4 6
2 4 6
3 1 5
2 4 6
1 3 5
2 4 6
1 3 5
1
6 2
5
1
6 2
5
5 1
6 2
5 1
6 2