removing a daqmx scale from a global channel at runtime

[wade75]

Hello, I have an issue where I would like to have a scale assigned to a channel in Max and saved to the channel.  However I want the capability to change the channel properties to either use the scale or read raw voltage.  I have tried to change these properties in code and it show that this is happening, however when I call the daqMX read function the data is read as scaled even though I set the custom scale to empty when I was setting up the task.  Any ideas.

[Travis-E]

Hello Wade,

Would it be possible to provide the code you are using so we may take a better look? Also have you taken a look at this KB which discusses how to programmatically query a custom scale:

http://ae.natinst.com/public.nsf/web/searchinternal/e09232f885e4d8a28625734d005d6ff5?OpenDocument

Try doing a query of the scale and seeing what is listed to see if it is really empty.

Regards,

-Travis E