Why computer cann't found GPIB board?

[blackmood]

My system including a PCI-GPIB board and a PCI-DIO-24 ran well ago, but crash was found when it was running.After I reboot my computer, I use Measure Explore to check if the boards is ok.As a long time responding, error "no found gpib board" is indicated. I check the chips on the gpib board,and it seems OK.
After it is re_pluged into computer, I turn on computer again. OS indicated "found new hardware" during booting but Measure Explore cann't found it yet.Why doesn't it work? Hardware wrong?------Chen

[gbush]

After letting the pc find new hardware, go to the control panel. There will be an icon for GPIB if the drivers were installed properly. Configure your board and you should be good to go!

[blackmood]

It is not my first installing GPIB board.The driver had been installed well and run well before failure was found.Why does failure happen?(I never reinstall OS and softwares, even anything).

[DiegoF]

Hi,

To sumarize:

The application was running properly. Without making any changes to the system, the application crashed. The board is not detected by the OS. To solve the situation you have to reboot without the board, and then reboot with the board plugged in. The OS detects the hardware changes and installs the board.

Is this correct?.

I have a few questions. It may seem like a questionaire, but it's the only way to determine what could be going on:

We you mention crash, is it an application crash (a dialog box with an X) or is it a blue screen?.

Is this an application that has been running for a long time?. Or is it an application that you have been constantly using and now is failing?

What OS are you using? What version of the NI-4
88.2? What version of NI-DAQ?.

Is this a C, LabVIEW or Visual basic program? Are you using NI-VISA? if so, what version?

Does the same thing happen the PCI-DIO board, or is it just the GPIB board?

And the most important, Is there any particular sequence of events that triggers the crash? A particular point in the program?. Anything that you can do to reproduce the error.

Also, include any changes that were made to the system. I know you mentioned that nothing change, but double check for any change at all.

If this has been an application that has been running for a while and it's suddenly failing, it can definitely be faulty hardware. If you have other PCI-GPIB boards, use them in this system and see if it gives the same error.

Let me know if you have any questions.

DiegoF.
National instruments

[blackmood]

Hi DiegoF,
First, let me answer your questions.Yes,I re-install the board as you have mentioned.It is an application crash.No, the application had run for 2 hours before it crashed.My application is used to measure power supplys' long-time stability.PCI-DIO is uesd to control relay-array to select a channal.Detected signal which is selected is input of a HP3455A digital voltage meter(DVM). PCI-GPIB is used to continuously sampling from DVM.All hardware and software are products of NI(Windows98 II,Labview5.1,NI-4888.2 1.5, NI-DAQ 6.5.1,NI-VISA).Typically, The application runs 24 or 48 even 72 hours every time.We use it constantly and now failing.PCI-DIO is testified ok by test panel in "Measurement&Automation Explore".Nothing changed but ambient temple
ture from 30 to 20 centigrade.
As for the program,the whole application is a sequence of 3 steps.In first step, the parameters such as channel NO.,sampling number, sampling interval,data saving path and so on, are configurated. In second step, it is a for loop, inside which channel is choosen then continuous reading(10 sampling) is performed, and datas are saved.It is a main body of application, and crash happens in this step. In last step, user can print the report or view the datas saved in hard disk in plot window.
I test the board at another computer and it seems ok.Long time(12 hours)test by a simple program with continous sampling via gpib in a while loop is passed.Next day, I try to install it back to first computer. It is successful.Long time test is on.
My question is what reasons cause to application crash.Computer's resouce conflict?
Chen

[DiegoF]

Hi,

A resource conflict would appear inmediatly, since the PCI resource are assigned by the BIOS.

I don't know what could be happening, it could be faulty memory or some other hardware component failing.

At least now it been working for a while.

DiegoF.
National instruments.