Rockwell Automation 1784-PCC ControlNet Communication Card Installation Instructions - Manual (Page 35)

Install and Use the 1784-PCC Card in Windows 2000/XP 3-15
Publication 1784-IN034D-EN-P - June 2002
4. Click on the Resources tab.
5. In the unlikely event that you have a resource conflict, you may need to
assign a specific interrupt to free the resource for another device. To
manually assign an interrupt:
a. Deselect (uncheck) the Use automatic settings checkbox.
b. Click on Interrupt Request.
c. Click Change Setting. .. and select an interrupt location.
d. In some cases, a device other than the 1784-PCC card may be determined
to use the interrupt that the PCC card wants. If this happens, let the other
device have the interrupt and assign the 1784-PCC card another interrupt
location.
TIP
The majority of the time, we recommend that you use the
automatic settings. The card will assign an interrupt (memory
location) for you. An interrupt must be assigned to the
1784-PCC card. Verify that there is an interrupt assigned and
no resource conflicts display in the Conflicting Device list.
TIP
Most systems have 15 interrupt locations available for
you to assign. If you have more than 15 devices that
need an interrupt location, you may need to disable
another device, such as an unused serial or parallel
port to make an interrupt available for the PCC card.