Hey Gavin!
There's nothing on spreadsheets on a given port going to a talon or something due to that being user specific. Here's an electronics diagram on where certain electrical components plug into the NI roboRio and PDP. What you could do is label all of the connections manually on the robot or make your own spreadsheet. Hope this helps.
http://archive.usfirst.org/sites/def..._CS_Layout.jpg