Hi Annatto,
The pins on your DAQ card route to different (but specific) modules on the SCC-2345 chassis. The routing is labeled on the chassis. For example, if you put your LP03 module in slot 1, then this will be routed to the differential channel ai0. This is hardwired so you cannot change it in software. Refer to Measurement and Automation Explorer (MAX) for how each channel on your DAQ card will route to the SCC-2345.
Hope this helps!
Garrett H
National Instruments