Advantech 2006957006 5th Edition 2.17.2 COM3/COM4 RI pin setting J6, Port, Address range

Table 2-6: COM2 RS-232/422/485 setting (J10)

	* RS-232		RS-422			RS-485
J10	18	17	18	17	18	17
	14	13	14	13	14	13
	10	9	10	9	10	9
	6	5	6	5	6	5
	2	1	2	1	2	1

* 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-9570/S’s serial ports.

Table 2-7: Serial port default settings

Port	Address range	Interrupt
COM1	3F8 ~ 3FF	IRQ4
COM2	2F8 ~ 2FF	IRQ3
COM3	3E8 ~ 3EF	IRQ10
COM4	2E8 ~ 2EF	IRQ5

2.17.2 COM3/COM4 RI pin setting (J6)

COM1 through 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 COM1 ~ COM4 RI pins are selected by setting J6.

Chapter 2 Installation 23