NI USB 6008 how to make power on outputs (DIO) low during startup

[embedded systems engineer]

Hi all,
Iam working with NI USB 6008 ,i have connected the NIUSB6008 port outputs to relays and LEDs.but when i started my pc then i noticed that the relays starts driving and LEDs blinking.After booting process is over the port outputs are high.Now i want to make low the above said port outputs during the startup of pc that is i dont need any voltage at the output ports (p0.0...)
how can i accomplish it ,please suggest me.

Regards
raghav

[embedded systems engineer]

Hello Dennis Knutson,
Can you please provide some solution to my question.I think probably nobody has noticed this in USB6008.

Regards
Raghav

[embedded systems engineer]

Hello Dennis Knutson,
Can you please provide some solution to my question.I think probably nobody has noticed this in USB6008.

Regards
Raghav

[embedded systems engineer]

Hello Dennis Knutson,
Can you please provide some solution to my question.I think probably nobody has noticed this type of problem in USB6008.

Regards
Raghav

[embedded systems engineer]

Hello Dennis Knutson,
Can you please provide some solution to my question.I think probably nobody has noticed this type of problem in USB6008.

Regards
Raghav

[WM_John_Weeks]

The DAQmx C API includes DAQmxSetDigitalPowerUpStates. I don't know if that would solve your problem or not. It night be that you're seeing an initialization routine running, and DAQmxSetDigitalPowerUpStates would only affect the state after initialization was complete.

[Dennis_Knutson]

And all I know about the USB 6008 is what's in the manual:

At system startup and reset, the hardware sets all DIO lines to

high-impedance inputs. The DAQ device does not drive the signal high or

low. Each line has a weak pull-up resistor connected to it.

[WM_John_Weeks]

Right- so the power-up state of the DIO lines is the high-impedance state, and you want it to be set up as an output in the low state. The function I mentioned should do that, if it is supported for the USB 6008. I don't see why it shouldn't be.

If you are using Labview, presumably there is some way to access that information.

Oh, wait- MAX can help here. Go to Devices and Interfaces->NI-DAQmx Devices, find your USB-6008, right-click and select Properties. In the Properties dialog, select the Powerup States tab.

[embedded systems engineer]

Hi ,
Thanks for your all support.actually i have opened the MAX and selected the devices and interfaces.and i selected the usb and right clicked but i got only save,rename and open visa session but no properties.Where are the properties.


Regards
RAGHAV

[embedded systems engineer]

Hi ,
Thanks for your all support.actually i have opened the MAX and selected the devices and interfaces.and i selected the usb and right clicked but i got only save,rename and open visa session but no properties.Where are the properties.


Regards
RAGHAV