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5.4 COM-port Interface
The panel PC provides four serial ports (COM1, 3, 4: RS-232; COM2:
RS-232/422/485) in one COM port connector.
5.4.1 COM2 RS-232/422/485 setting (JP3, JP4, JP5)
COM2 can be configured to operate in RS-232, RS-422, or RS-485
mode. This is done via JP3, JP4 and JP5.
Table 5-4: COM2 RS-232/422/485 setting (JP3, JP4)
*RS-232
2
JP4
1
2
JP3
1
* default setting
Table 5-5: COM2 RS-232/422/485 setting (JP5)
*RS-232
2
4
1
3
* default setting
The IRQ and the address ranges for COM1, 2, 3, and 4 are fixed.
However, if you wish to disable the port or change these parameters
later you can do this in the system BIOS setup. The table overleaf
shows the default settings for the panel PC's serial ports.
5 6
PPC-153 User's Manual
6
5
6
5
RS-422
6
2
5
1
RS-422/485
2
JP4
1
JP3
RS-485
4
6
3
5
2
1
2
4
6
1
3
5
6
5
6
5
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