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Table
2-12:
J19
J20
J21
* default setting
The IRQ and the address range for COM1, 2, 3, 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 below shows the settings for the PCM-5864/E/L's serial
ports.
Table
2-13:
Port
COM1
COM2
COM3
COM4
2.17.2 COM3/COM4 RI pin setting (J11, J12)
COM3 and COM4 can supply +5 V or +12 V power to the serial
devices via the RI pin of the COM port connector. The outputs of
the COM3 and COM4 RI pins are selected by setting J11 and J12
respectively.
30
PCM-5864/E/L User's Manual
COM2
RS-232/422/485
*RS-232
5
3
1
6
4
2
5
3
1
6
4
2
5
3
1
6
4
2
Serial
port
def ault
Address range
3F8 ~ 3FF
2F8 ~ 2FF
3E8 ~ 3EF
2E8 ~ 2EF
settin gs
(J19,
RS-422
1
3
5
6
4
2
5
3
1
6
4
2
5
3
1
6
4
2
settings
Interrupt
IRQ4
IRQ3
IRQ10
IRQ5
J20,
J21)
RS-485
3
1
5
6
4
2
5
3
1
6
4
2
5
3
1
6
4
2
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