Re: Adding PXI 1010 (SCXI) chassis as DAQmx simulated device

[MikeS81]

Hi kphite,
as far as i know you can´t simulate chassis. Either your card is available as simulated device or it is not possible for your card.
Mike

[pBerg]

Howdy kphite, Assuming you have a working version of <a href="http://joule.ni.com/nidu/cds/fn/p/q/ni-daqmx/sb/-nigenso1/lang/en" target="_blank">NI-DAQmx</a> installed, you can simulate a PXI-1010 chassis in Measurement &amp; Automation Explorer (MAX) by following these steps: - Within MAX, right-click on Devices and Interfaces, and select Create New
- Select NI-DAQmx Simulated Device within the Create New ... window
- Expand the SCXI Chassis tree within the next window that appears, and select the NI PXI-1010 (SCXI) option
- Click OK
You will also need to have a DAQ device installed (or simulated) in MAX to communicate with this simulated PXI-1010 chassis. For more info, you can check out the <a href="http://digital.ni.com/manuals.nsf/websearch/7EC076BF0B4845C986256E940052B681" target="_blank">PXI-1010 User Manual</a>.

[kphite]

Hello pBerg, I had figured that much out but the "Create New SCXI Chassis" dialog that appears seems to want me have a real chassis installed. It asks for the chassis address and communication mode (which I leave at default) and then when I click save it says that there isn't a PXI device in the rightmost slot. I know there isn't a PXI device in the rightmost slot because there isn't a PXI device.:smileywink:Any help would be appreciated. I don't want to have to do initial development work on the actual bench. I prefer to do it on my laptop.

[MikeS81]

Hi kphite,
now where i know it is possible i tried it and it works like pberg described.
Mike

[pBerg]

Howdy kphite,You want to select Using Front Connector as the SCXI Communication Mode in the Create New SCXI Chassis dialog. Then select an installed (or simulated) DAQ device as the Chassis Communicator. I've attached a screenshot <img src="file:///C:/DOCUME%7E1/pbergero/LOCALS%7E1/Temp/moz-screenshot.jpg" alt=""> simulated-pxi-1010-config.png that illustrates this.<img src="http://forums.ni.com/attachments/ni/270/5171/1/simulated-pxi-1010-config.png"> For a PXI-1010 combo chassis, you need to install (or simulate) a <a href="http://digital.ni.com/public.nsf/allkb/C56F7D3E11C546208625726100672CA2?OpenDocument" target="_blank">compatible DAQ device</a> in the right-most PXI slot to act as the communicating module for the SCXI side of the chassis. All the SCXI communication passes through this right-most DAQ device. In my case, I first created a DAQmx simulated a 6251 M-series DAQ module. Then as I created my simulated PXI-1010 chassis, I chose this 6251 module as the communicating module. I hope this helps!Message Edited by pBerg on 03-28-2008 11:39 AM

simulated-pxi-1010-config.png:
http://forums.ni.com/attachments/ni/270/5171/1/simulated-pxi-1010-config.png

[kphite]

I use a PXI-4070 for controlling the SCXI side in the real application. Can I use that option in the simulation mode? Can I add a simulated 4070? kphite

[pBerg]

Howdy, Though you can't simulate a PXI-4070 in MAX, you can simulate it in LabVIEW by following the instructions outlined <a href="http://digital.ni.com/public.nsf/allkb/3C7A39FCA065E46D862572C900712938?OpenDocument" target="_blank">here</a>. Have a great weekend!

[kphite]

Thanks pBerg, that doesn't help me though. I want to build up my switch executive virtual devices and the primary measurement/control instrument is the flexDMM. I need to be able to see it in simulation mode so that I can test all my routes. It doesn't seem to me that this DAQmx simulation mode is ready for prime time. I didn't use it in my last two designs because of that and it doesn't appear that I will be able to use it this time either.:smileysad:kphite

[mallorim]

&nbsp;Hi kphite,

Simulating the chassis and switch modules in DAQmx should be sufficient. While, currently Measurement and Automation Explorer (MAX) does not allow the simulation of DMMs, Switch Executive does not care how you are controlling the SCXI portion of the chassis. You can simulate the chassis and SCXI Switch modules, which will create their own driver sessions in the IVI Drivers portion of the MAX configuration tree, or you can expand the Driver Sessions sections, right click, and create a new session yourself.

<img src="http://forums.ni.com/attachments/ni/270/5202/1/driver%20session.PNG">

If you simulate a driver session, you will need to fill out the General tab similar to what is seen in the screenshot, the Hardware, and the Software tabs. The Driver Set-up is where you enter the topology of the switch modules you are using, and this is sensitive. After you simulate a driver session, you can create a logical name that points to that driver session, and finally you can create a new Switch Executive virtual device and use the logical name.

You can then build a route using that topology and click the Validate button at the top of the page to test the routes.

Regards, Mallori M.Message Edited by mallorim on 04-01-2008 01:13 PM

driver session.PNG:
http://forums.ni.com/attachments/ni/270/5202/1/driver session.PNG

[kphite]

Hello Mallorim,Thank you but that still doesn't help me much either. I realize now that I can't simulate the SCXI-1129 matrix devices that I use either. Initially I was thinking I could use the PXI version (2529) but the density isn't there. Also, the DMM isn't just the controller in my set up, it's also the principle measuring instrument. If I start using other devices just to get it to work then I'm actually creating extra work for myself to convert to a real set up later.kphite