6036e Daqcad AI voltage rails until device reset.

Hi,
I'm running a daq program (attached) which has some DIO, AI and AO in loop and readings on 2 of the Analog channels (#1&5) that are connected to load
cells, rail at one end of the range set.
A DMM attached reads the correct voltage of 2V. The strange thing is Max reads the right voltage only when the device has been reset after running the VI.
AI channels (#0&4) connect to a Force sensor that requires excitation turned on by digital writes. AI channel #1&5 are connected to the load cell in question.
I have tried 2 laptops, 2 daqcard-6036e on XP and driver 7.2 & 7.3 , same results. VI always rails. MAX rails only after VI is run and works fine.
I have decreased the sample rate to 1s hardware ti
med no effect. This programm is similar to the DAQmx example of Multi-channel PID control with some additinal digital-O & analog-I's added.
I looked at the KB's on AI Rails but they refer to the range and gain. I have tried a range of +-10V and still see railing.
http://digital.ni.com/public.nsf/3efedde4322fef19862567740067f3cc/6bcac575d4f3c98386256e8e0025d0c5?OpenDocument
http://digital.ni.com/public.nsf/3efedde4322fef19862567740067f3cc/d797b39b1088df2886256dd30058d9bf?OpenDocument
I would appreciate any help. As in the NI example, you can take the PId vi's out or ignore them and fake a PID output if you don't have the PID toolset installed.
Attachments:
tuned_pid.vi ‏336 KB

I think we can limit this to just your analog inputs.
First, do you know what mode your DAQ card is in for your analog inputs (differential, referenced single ended, nonreferenced single ended)?
Second, exactly how do you have your analog inputs wired (to what pins of your DAQ board)?
Here's why I ask. If you're using your DAQ board in differential mode, then for your first analog input, your positive goes to AI0 and negative goes to AI8. For the second analog input, it's AI1 (+) and AI9 (-), and so on.
If you have your (+) inputs going to AI0, AI1, etc but your (-)s going to AIGND, then you're set up for single ended mode, not differential, and your signals will probably rail.
It just might be that NI-DAQ is setting up your card for one typ
e of input, while your program is resetting it for a different type of input.
Mark

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    Does anybody have any idea on wat's going on? If i installed the new Walkman app manually from an apk file, will future updates release throw update center work? And why wont any updates for the stock app recognised using update center?
    Thanks

    I had experienced the same issue, for some odd reason it take few days for Sony's apps to be re-updated. You will continue to receive updates as long as you don't unlock the bootloader. 
    "I'd rather be hated for who I am, than loved for who I am not." Kurt Cobain (1967-1994)

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