What's the meaning of "Quality" in SV value change notification?

[chenzixin]

Hello,

I am trying to understand the SCADA template, but there is a parameter really hard for me to understand, which is showed as attached.

I want know what is the meaning of "Quality" in SV???

[carmen9]

Hi Chenzixin,

I found some information regarding this "quality" parameter:

• Get Quality Summary VI

"quality returns the data quality of the tags. A value of zero indicates good quality."

• For more information, please refer to: DataSocket Read Function