Parallel and multiplex

[NAUSHICA]

I have a PXI-6289 DAQ card installed in a PXI/SCXI combo chassis.
I want to use this to control two SCXI-1125 in parallel mode in a different chassis (SCXI-1001 chassis) and in the same time
to control 3 SCXI-1166s in the combo chassis in multiplexing mode.
Will this setup work?

Rg

Naushad

[devchander]

No, a DAQ card can be configured to acquire from SCXI modules in either parallel or multiplexed mode.

But not both modes at same time

[Stuart_R]

In parallel mode it works out to be one DAQ device per Module you are communicating with. Thats the trade off and why multiplex mode is a good option to go for if true simultaneous sampling is not required.

[NAUSHICA]

yes. This was what i heard from the NI engineers.

But it seems my set up works fine.
It acquires signals from SCXI-1125 in parallel mode which are in SCXI-1001,
and at the same time can control the switch modules  in PXI-1052 chassis.
Can you tell me why this works?
Do you see any problems with operation in this set-up?

Rg.

Naushad

[devchander]

I remember reading that SCXI switch modules are controlled by using DIO lines of your DAQ card in a multiplexed mode

Some DIO lines on DAQ card will be reserved for this purpose

I could not find the relevant documentation

If anybody has any support mateial for this, can you please post it??

[Stuart_R]

Is this what you are looking for?

http://digital.ni.com/public.nsf/websearch/86C493E0768EBCFE86256FD4006BCD52?OpenDocument



Cheers

Stuart

[McKala[DE]]

The PXI-6289 should be able to control both the 1166's in the PXI/SCXI combo chassis and both the 1125's in parallel mode.  This KB explains you can control both cards using serial communication through the backplane and a card in parallel.  In this case, because the PXI-6289 can control 1125's in parallel mode because it has 16 digital control lines, one through each connector. 

I hope that helps!

[devchander]

Stuart,

getting an error message, that particuar page is not found

[EmmaR]

Try this:

http://digital.ni.com/public.nsf/websearch/86C493E0768EBCFE86256FD4006BCD52?OpenDocument