Can multiple instances of the same module be used on one cRIO

[michael081585]

I would like to increase the channel count on a cRIO by adding several of the same modules to the cRIO.  Will this work to expand the channel count or can only one of any module type be used at a given time.

[speleato]

Michael,

That won't be a problem, in general you can have as many of a given module as will fit in the backplane.

The only real exception to this is if you run out of space on the FPGA to interface with this modules.  This is only really a problem if you are doing complex things on the FPGA and of course depends on the FPGA you are using. 

If you have concerns, you can add the module offline in the project and write your FPGA VI as if you have the module.  If it compiles, you are fine for space.

Let me know if you have any more questions,

Sebastian

[Stephen_Moore]

Hi Michael,

You can have all of the same module if you like.  I have 8 9206 modules in a 9104 backplane. Each module isidentified by Slot number and module type.  You can use some/all of the modules with the scan engine or your own FPGA vis.

The main consideration is how much of the FPGA you need to use.  You can always try to compile first to see if it will fit the FPGA, if it does not you might have to try to use the various FPGA optimisation techniques to get it to fit.  The smaller FPGAs will of course give you the biggest challenge.

Cheers

Stephen