Setup software for matrix expansion

[Quintin]

I have a SCXI-1000 chassis with three SCXI-1127 switch cards each with a SCXI-1332 terminal block.  I have expansion cables to expand my switch matrix to 4x24.  My question is what do I have to do in software to set my system up to be seen as one 4x24 switch matrix, if anything. 

In other words, how do I address the full switch system of three cards using the NI-Switch VI's.  What resource name and/or topology do I wire to the "niSwitch Initialize with topology.vi"?

Quintin 

[Guy Ferraro]

Quintin,

It is for this exact reason we developed National Instruments Switch executive which allows you to create a virtual device made of Multiple devices and address it is a single. Unfortunately NI-Switch will not allow you to address (3) switches as one device. You wil need to open (3) sessions and activate relays to the 3 SCXI-1127 independently.

Guy Ferraro
Switch Product Support Engineer
NI - USA 

[Quintin]

Even if I create a single device in NISE consisting of all three switches, I still can't use NI Switch? 

If the answer is no, what would be the best way to control the switching in my code, would I have to call each card independently?

[Guy Ferraro]

Once you have created a virtual device in NISE, there is no need to use NI-SWITCH to activate relays. You should use NISE VI and talk to the vistual device as one device. You can use niSE open session and niSE connect VI.

Guy Ferraro
Switch Product Engineer
NI - USA