custom scale created in MAX seems to not support negative y-axis intercept

[Steffen.Schmidt]

Hello,

I created a linear custom scale to use with a M-Series Multifunction Board. When I put positive y-axis intercepts everything works fine.
But as soon as I try to use negative values it doesn't work anymore.

I use DAQmx 7.4 with TS 3.1 and CVI 7.1. The communication with the board is done by CVI functions.

Steffen

[ManuelW]

Hi Steffen

Does it work if you test it directly in MAX by using
the test panel?

what does exactly happen if you had negative intercepts?

regards

Manuel Wielander
National Instruments

[Steffen.Schmidt]

Hello Manuel,

I don't have any possibilities to test it in MAX... on the test panel for analog output there's no option to use a scale.

If I use negative intercepts the step hangs up, it doesn't even run into timeout.

best regards
Steffen

[ManuelW]

Hi Steffen

I think about the test pannel in your NI-DAQmx-Tasks.
Have you set valid values for your max-min voltage in your task?
You maybe have to change it if it comes over 10V with your negative y-axis intercepts

regards

Manuel Wielander
NI

[Steffen.Schmidt]

Hi Manuel,

I had a look at the min/max values in the tasks but they are allright even with negative intercepts. But in a former answer you mentioned to try the scale with the test panel in MAX. How?

I attached a screenshot of the testpanel, I don't see any possibility to use a scale there...

Regards
Steffen

[Watermann]

hi Steffen,

found this link.

did you try to scale/set the axis in CVI with a function?