VB60: File not found: ni435x_32.dll

[ni435x]

• What you are trying to accomplish

Run an example programm C:\Program Files\VISA\winnt\NI435x\examples\cw\NI435X Simple Continuous Read

• What steps are necessary to reproduce any problems

Start with full compile Ctrl+F5

• What steps, if any, you have taken to solve any problems and the results of your attempts

Project -> References -> National Instruments 435X -> Browse...: the path to dll is correct, but can not change the path. DLL is in C:\Program Files\VISA\winnt\bin\.

• Any other National Instruments software or hardware products you are using

PCI-GPIB; LabView 6 and 7

• What error messages may appear as a result of the problem

File not found: ni435x_32.dll

[chericks1]

Hi ni435x,

In response to your question, the error is given to notify the user ni435x_32.dll is not found on your system. If this file is on your system, we have a problem. Normally, to use the examples, you must at the most point to the correct reference. I see you have an issue with doing that as well.

To alleviate this issue, is it possible to uninstall your current version of NI-435x 2.1 and download and install the most current driver for the NI-435x? The newest version is NI-435x 2.5 and can be found at the following link:

http://digital.ni.com/softlib.nsf/websearch/1B6C09643743A76986256FEB005BF097?opendocument&node=132060_US

Please let me know if you have any questions or if this does not resolve the issue! \

Chad Erickson
Applications Engineer

[ni435x]

Thank you, Chad. Now VB examples work with updated NI435x 2.5 and NI-DAQ 7.5.

At a maximum speed measured this basic programm takes about 0.8 sec for each reading.  Is it possible to get temperature data with a time stamp for the documented rate of up to 60 readings/sec using TC-2190 and monitor it in the programm, say, twice per second (when we have enough time to change power to prevent over-heating)? 

[chericks1]

Hi ni435x,

It's good to read the VB examples are now functioning for you after updating to NI435x 2.5 and NI-DAQ 7.5.

In reference to your second question, it is not possible to get temperature data with a time stamp for the documented rate of up to 60 readings/sec.  Because you are measuring cold junction compensation, the board must be configured for multiple channel acquisition mode rather than single channel acquisition mode, and the reading rate is slower in this mode.  To determine the reading rate per channel when scanning multiple channels, divide the multiple-channel measurement reading rate by the number of channels in the scan.  For example, if the multiple channel reading rate for 10 channels is 9.7 S/s, the reading rate for each channel is 9.7/10 = 0.97 S/s. Refer to the Choosing a Reading Rate section of the NI 435x User Manual, pgs. 2-3 and 2-4, or the VI Documentation for NI435X Set Reading Rate for more information.  Table 2-1 Filtering and Sample Rates presents this information very well.

NI 435x User Manual
http://digital.ni.com/manuals.nsf/websearch/9249394DFC45FA3D86256FD20078D836

I am also including a KB entry and tutorial on reaching the fast sample rate on the NI 435x.

Reaching the Specified "Fast" Sample Rates on the NI 435x
http://digital.ni.com/public.nsf/websearch/4DE8AA5BE947F9EB86256CF0007C6387?OpenDocument

Maximizing Acquisition Rates with the NI 435X Data Logger Board
http://sine.ni.com/apps/we/niepd_web_display.display_epd4?p_guid=B45EACE3E2E556A4E034080020E74861&p_...

Best regards,

Chad Erickson
Applications Engineer

[papaya]

Hi

I met the same problem too.in my pxi system,two pxi4351,4 pxi4472 and one pxi6225.now i load ni435x2.5.1 and daqmx8.3.

if i only install daq7.4.1 and ni435x2.5.1,i can run the example (vb60 getting started(meaure resistance with accessary)) ok.but i have to install daqmx8.3.0 to drive pxi 4472 and pxi6225.after installed daqmx8.3.0,cannot run the same example code,show me the messege"file not found ni435x-32.dll". i am sure i add the refference in add item.(ni 435x_32.dll).

please help me! and thanks in advance.or email me(hitctx@hotmail.com)

papaya in china

[Nick_F1]

Hi Papaya,

Thank you for posting on the National Instruments forums.

The issue you are seeing can be fixed with a quick modification of the DAQmx drivers.  Follow the steps in this knowledgbase, Error -10240 When Trying to Run Visual C++ Examples with the NI 435x Boards, and you should be able to run the VB examples again.