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Coercion dots on waveform chart

Hi I am using cRIO 9075 and Module 9201, when i connect my 9201 module AI0 to waveform i get coercion dot on wave form chart. how to get rid of this. please help me with this issue

Thanks,

Surya S

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Message 1 of 11
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Attach your VI.

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Message 2 of 11
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Hi suryas,

 

why do you use a chart on a headless cRIO target at all?

Best regards,
GerdW


using LV2016/2019/2021 on Win10/11+cRIO, TestStand2016/2019
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Message 3 of 11
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i need to check the voltage waveform from the AI0. I am giving 3v from the function generator to the mod 9201. how to connect the waveform chart to the mod AI0.

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Message 4 of 11
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Hi suryas,

 

just connect AI0 with a chart as you did - the coercion dot does not harm you!

 

What is the datatype you get from AI0?

 

Again: the cRIO9075 is a headless device. You should not use any FP elements like chart anyway…

Best regards,
GerdW


using LV2016/2019/2021 on Win10/11+cRIO, TestStand2016/2019
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Message 5 of 11
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Numeric data type.

When i connect the chart to the AI0 its shows error that type not supported in current target.

Wats mean by headless device

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Message 6 of 11
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Hi suryas,

 

Numeric data type.

It's of course a numeric datatype when you read measurement value. But which datatype do you get?

 

When i connect the chart to the AI0 its shows error that type not supported in current target.

When there is a problem with YOUR VI you should attach YOUR VI.

(Or provide a snippet…)

 

Wats mean by headless device

"Headless" means: this device doesn't support to connect a monitor.

What's the point of creating frontpanels when the target can't show them on a monitor?

Best regards,
GerdW


using LV2016/2019/2021 on Win10/11+cRIO, TestStand2016/2019
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Message 7 of 11
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This the VI. I actually need to just check the analog input values that is given by the function generator. 

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Message 8 of 11
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It's pretty obvious.  You are sending it a fixed point datatype.  That is not a typical datatype for waveform charts which would be doubles, arrays, or waveforms.  It needs to coerce the fixed point value into something the waveform chart was designed to handle.

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Message 9 of 11
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Is there any way that i can see the voltage waveform.

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Message 10 of 11
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