You can certainly monitor the same channel with different applications on different computers. Each application would have its own FP read VI with the address of the fieldpoint channel written in to it.
As for controlling the same channel from different applications, that could get tricky. I think it can be done (using FP write VI's), but the logic of doing anything where you have two writers could cause problems and race conditions. For example, say you have a digital output, and one application writes a false to it while the other is writing a true, and each application is doing this in loops. The digital output would be going on and off, on and off, over and over again. You would need a good programming scheme so that the two applications will play nice with each other. I don't know what more to say about this situation without a clearer picture as to why 2 different applications need to control the same output.
