SCXI 1321 not recognized in MAX or LabView

[instrument1]

Hi,I want to measure strain and I am using the following instruments to do so:1.      Strain gauge2.      SCXI 1121 module3.      SCXI 1321 Terminal block4.      SCXI 1000 chases and5.      DAQ Card AI 16E-4I have LabVIEW 8.0 and Windows XP operating system. I faced two problems:1.      From the “Find Examples” I found an example VI “Cont Acq Strain Samples.VI” and copied it with different name in other folder. I tried running the VI but there was no physical channels were available in the “Physical Channels” input section. It was not shown in the Measurement and Automation Explorer too. How can I configure the SCXI 1321 and make it available in MAX and LabVIEW?2.      To solve the above mentioned problem, I installed ·         NI DAQmx, Type: Hardware driver for Windows XP, Version-8.8·         NI DAQmx Device Documentation, Version-8.9 for Windows XPAfter I installed those, the VI which I was using previously asked for some subVIs when I opened it. I could not find those subVIs. So when it opens it shows errors. I tried searching the example but I could not found that too. I don’t know why I am unable to find the example VI which was available there before I installed the above mentioned drivers.  But after the installation, I could see NI-DAQmx Device in the MAX’s Device and Interfaces. I tried creating New SCXI Chassis but when I open the window “Chassis Communicator” option stays disabled and I can’t select any Chassis Communicator. “Communicating SCXI Module Slot”, “Chassis Address” and “Auto-Detect Modules in Chassis” options stay enable, though. Please help with these issues. Thank you very much in advance.Have a good day,

Jignesh  

[CharlesD]

First off LabVIEW 8.0 is NOT compatible with NI-DAQmx 8.9.  The latest DAQmx driver that is compatible with LabVIEW 8.0 is: DAQmx 8.7.1  I suggest uninstalling the DAQmx driver from ADD/Remove programs =--> National Instruments Software and installing the proper Driver version. 

Please see the following Document for version compatibility:  http://digital.ni.com/public.nsf/allkb/97D574BB1D1EEC918625708100596848

To download DAQmx 8.7.1 please see the following Link: http://joule.ni.com/nidu/cds/view/p/id/965/lang/en

After you do this lets ensure that the PCI - MIO 16E-4 is recognized under Measurement and Automation Explorer and has a green icon next to it under NI-DAQmx devices.  This is crucial to start establishing communication with the SCXI Chassis. 

After doing all of this please repost thank you.  

Also next time this post would be more appropriate and would likely get more attention by other customers if it was located under MultiFunction DAQ

Thank you and have a great day!

[instrument1]

Hi,Thank you very much for the response. I removed the NI-DAQmx 8.9 and installed NI-DAQmx 8.7.1.  Now the “Cont Acq Strain Samples.VI” opens without any error. But there is no “PCI – MIO 16E-4” available in the “Device and Interfaces” in MAX. There are NI-DAQmx Devices, Ports (Serial & Parallel) and PXI System (External PC) options visible. Please let me know what should I do next. Hoping for and early reply. Thank you,Have a great day!!

[instrument1]

HiI found a post similar on the AI-16E-4 card (http://forums.ni.com/ni/board/message?board.id=250&requireLogin=False&thread.id=23250)I installed the Traditional NI-DAQ 7.4.1. Now “Traditional NI-DAQ (Legacy) Devices” folder is visible in the “Device and Interfaces” in MAX. I added “SCXI Chassis” and now there are two items in the folder: DAQCard-AI-16E-4(Device 1) and SCXI-1000 (Chassis 1). Still in the VI, there is no Physical Channels are avaible. Please suggest me what I should do now. An early rerply would be really appreaciated. Thank you,

[instrument1]

Hi,    I found another VI – “Continuous Strain Measurements.VI” from the example finder. I choosed the “Limit results to hardware” option with “DAQCard-AI-16E-4” and searched for the word “Strain” and found this one. I want to know what is the differnce between “Continuous Strain Measurements.VI” and “Cont Acq Strain Samples.VI”. Which is better for acquiring readings from multiple strain gauge (Channels) simultaneously.

[CharlesD]

I Unfortunately do not have the Continuous Strain Measurements.vi and so I cannot comment on it.  However I quickly developed an example VI that reads from an SCXI Chassis setup just like yours (with your exact hardware).  PLease see the attached screenshots to see how this is implemented.  This is the basics from strain measurements.  Other more advanced features can be included if necessary but they would simply be added to this simple VI.

[instrument1]

Hi

As I mentioned in the previsoul post that there is no “PCI – MIO 16E-4” available in the “Device and Interfaces” in MAX. There are NI-DAQmx Devices, Ports (Serial & Parallel) and PXI System (External PC) options visible. I wrote a VI from the sceenshot you gave but in that I could not find anything in the “Physical Channel” option. Please let me know what should I do next. Hoping for and early reply. Thank you very much.

[Brad_K]

Hi Jignesh,

The DAQCard-AI-16E-4 is supported by Traditional NI-DAQ but not NI-DAQmx.

Continuous Strain Measurement.vi uses the Traditional NI-DAQ API, so it may work with the DAQCard-AI-16E-4 and SCXI-1121 if you have the jumpers on the SCXI-1121 set correctly (see the SCXI-1121 manual), you have the chassis and SCXI-1121 configured correctly in MAX, you have the signals wired up correctly, and you specify the correct channel string. Some information on Traditional NI-DAQ channel strings can be found in the article Valid SCXI Channel String Arrays under LabVIEW.

Cont Acq Strain Samples.vi uses the NI-DAQmx API, so it will not work with the DAQCard-AI-16E-4.

Brad