PXI 2503 with 2606 Terminal Block 4x6 Matrix

[spider_1112006]

I am using PXI 2503 with 2606 Terminal block in 4x6 matrix. I want to supply power lines to r0 and switch ON/OFF c0, c1, c2, c3 individually. I made a vi to do that, but it works only if there is no power supply connected to r0. I tested the vi via connecting multi-meter to check for short when i switch and it works fine. But, as soon as I supply power (24VDC) to r0+/-; it works first time and then entire PXI hangs and the only solution is to reboot PXI and computer!

I dont know what I am doing wrong, please give suggestions.

Thanks in advance.

[stilly32]

Hi Spider_1112006,

It sounds like you might have a short somewhere - if you use a completely different set of channels (r1, different combinations of the columns) do you still get a hang? If you use a floating voltage (battery) at r0 and read the columns with your dmm, does the voltage switch through correctly?  Also, does the PXI system throw an error or give some sort of message? Does it blue screen or just hang? What happens if you do this in just a test panel? Just for info, what kind of current are you switching? I would expect different symptoms (hangs are never expected ) but its worth checking.  

Hope this helps, please post back if these suggestions don't shed any light on a solution.

Thanks,

Andrew S.

National Instruments

Message Edited by stilly32 on 12-04-2006 04:51 PM

Message Edited by stilly32 on 12-04-2006 04:52 PM