9219 and 9411 c-series modules with cRIO 9073 doesn't seem to work?

[GScottB]

I have a system (and code) that is made up of a cRIO 9073 with a 9205 and a 9411 c-series modules that works just fine.  When a swap the 9205 for a 9219 (a 24 bit A:D) the system starts behaving poorly without any sort of error.  That is, the 9219 part of the system works, but the 9411 stops reading the encoder it is connected to.  When I modify the project so that either the 9219 or the 9411 is included that part of the system works fine. Trying to implement both in the same project is when the 9411 ceases to function.  To be clear the same configuration using the 9205 and 9411 works like a charm...I would appreciate any advise on what the problem is and how to correct.

Thanks,

Greg  

[Thør]

Are you using this cRIO in scan interface mode?  Either way, these 2 modules should work together just fine.  To be clear, when you swap out the modules are you making the proper changes in the project to get the correct I/O variables into your code?

[GScottB]

Thanks for the reply.  I'm using the system in FPGA mode and yes I've both modified the existing project and code to reflect the use of the 9219...when this failed to work I built a completely new project with the appropriate setting for 9219 use.  This is a perplexing one and was hoping that there would be something obvious that I missed?

Your help in solving this will be greatly appreciated.

Greg

[Thør]

So it seems like making a new project with the appropriate 9219 settings works well, and then adding in the 9411 causes them both to fail?  There's no reason why these two modules shouldn't work well together.  Do you get the correct results when you make a new project from scratch that utilizes both modules from the beginning? 

[GScottB]

No, not exactly...whether it is a new project or an existing one (that utilizes a 9205) that gets modifed for use with the 9219 the results are the same; the 9219 performs just fine but the 9411 doesn't.  Just to be clear, the same project and associated FPGA vi works just fine with this 9073 cRIO with 9205 and 9411 c-series modules?

Thanks,

Greg