Figure 5–1 COM ports
COM2
COM1
HDC-18-SBC Multiport cable
J2 connector, on front of board
2060
Serial Device
Serial Device
RS–422 or RS–485
RS–422/485 cable
Table 5–1 Serial port configurations
COM
Port
Address IRQ Interface BIOS
Setup for
COM2
Connector
(2060 HDC-18-SBC-
Multiport cable)
COM1
3F8h*,
2F8h,
3E8h,
2E8h
IRQ4*,
IRQ3
RS–232 –
8 wire
NA
COM1
COM2
3F8h,
2F8h*,
3E8h,
2E8h
IRQ4,
IRQ3*
RS–232 –
8 wire
RS232
COM2
COM2
3F8h,
2F8h*,
3E8h,
2E8h
IRQ4,
IRQ3*
RS–422 –
4 wire
RS–485 –
4 wire
RS422/485
J7 – RS–422/
RS–485
* = default
50