Advantech 4-Port RS-232 Interface card PCL-849 - Manual (Page 15)

1 6 PCL-849 User's Manual
Default Settings
Mode Enhanced Mode
Port 1 IRQ12 Address 300H
Port 2 IRQ12 Address 308H
Port 3 IRQ12 Address 310H
Port 4 IRQ12 Address 318H
The following example shows how to set the base address to 2F8.
The switch sum is set to 2F8: 200 + 80 + 40 + 20 + 10 + 8 (HEX).
Note: On the PCL-849 address line A9 does not appear on the DIP
switch, as it is permanently hardwired to hex 200.
Interrupt Level (IRQ) Setting
(S1, JP1, JP2, JP3, JP4)
The card's IRQ mode can be set using S1. Shared IRQ mode or
independent IRQ mode is set as shown below.