DAQ-PAD 6508 initialization

[Tom_W_[DE]]

Hi Huzach-

Glad to hear you got everything working- let us know if you run into anything else.

[beeuwke]

Hi,

I was having the same problems when using only one Daqpad 6508. I installed NI-DAQ 7.4 and I didn't see the problem again (which gave error code -10401). Let's hope this solved this issue. I was obligated to use NI-DAQ 7.4 because we are still using Labview 6.1. NI-DAC 7.4.1 doesn't support this anymore. Is NI-DAC 7.4 ok for solving this?

The problem I still have now is the following: When the Daqpad is powered down and powered up (by removing the power cable), I see the 'device configured' led blinking at a rate of 3 blinks. When I run my application, it doesn't give any errors but the DAQPAD doesn't work (it doesn't configure the IO's). When I then plug the USB cable In and out or when I switch the daqpad on and off, the "device configured" led lits up and I can use it again.

Any idea what is causing this? Any advice?

thanks a lot...

best regards,

Marino

[Laura F.]

Hello Marino,

This situation of 3 LED blinks is discussed in the User Manual.  It means there has been a power supply failure and the unit is trying to draw too much power from the USB bus.  The remedy is to connect the external power supply.  Have you tried this, or checked to make sure your external supply is working correctly?

Thanks,

Laura

[beeuwke]

Hi Laura,

thanks for the response,

What I'm seeing is the following:

The DAQPad is working fine (the external power is connected).

When the external power is disconnected, the "device configered" led start to blink at a 3 led blinks rate.

When I apply the external power again, it remains in that state (3 led blinks). Shouldn't this come back to normal so I can communicate with it again? It doesn't come back to normal until I plug the USB cable in and out.

Is that normal behavior?

thanks,

kind regards,

Marino

[Laura F.]

Hello Marino,

Once the DAQPad has entered this state, it must be power cycled before it will resume communication.  One way to power cycle the unit is to disconnect the USB cable, and the other way is to use the switch on the back of the unit. 

Regards,

Laura