UMI-7774 - Setting default Power up outputs?

[Richard_Jennings]

Hi,

I'm using a UMI7774, PXI7350, NI Motion 7.4.0.3002, and LV 8.2 I have a 24 V power supply connected to Viso on the UMI. When the PXI computer boots the general purpose digital output lines (table 3-9 in the UMI manual) on the 25-pin D-sub go to 24V and stay there until the board is initialized. Is there a way to set the default power up state to 0V?

Thanks,

Richard

[VuD]

Hi Richard,

Here is a knowledgebase document regarding how to change the power up state KB 2HA8B9YJ: How Do I Change the Default Power Up State of the DIO Lines on the NI 733x, 734x, and 7...Based on the setup configuration you have described, there is currently no direct method for accessing the DPull pin. One work-around would be to create your own custom cable in order to ground this pin.   Here is another document regarding how to do this: KB 47FARV4M: Creating custom cables for NI Motion controllers (733x, 734x, 735x) 

I hope this helps.  Please let us know if you would like further clarification or assistance regarding this issue.  

Best regards,

Vu