Set by default this parameter controls the quality tooltip that displays the value, quality and timestamp for the current subscription of the tag element or element item.
This feature applies to text / numeric display objects and symbol set objects. The quality information that is displayed is the result of the evaluation of the main expression for the object e.g. for text objects this is the ‘display value’ expression and will ignore the scale, fill or movement expressions.
The quality information that is displayed is the result of the evaluation of the main expression for the object e.g. for text objects this is the “Display Value” expression and will ignore the scale, fill or movement expressions. The expression has to directly, and in each page, refresh the cycle of reading at least one external tag, ex. “Tag1”, “Tag1 + Tag2” or “QualityToStr(Tag1)”, but not “10” or “sin(1.0)”. Moreover, a reference to the tag cannot refer to the tag’s items, so for example “Tag1.v + Tag2.v” is not going to show a tooltip.
When values displayed by text / numeric display objects are not visible because of error codes, such as #COM, their tooltips will include values as well. Tooltips defined in Graphics Builder have higher priority than quality tooltips.
Allowable Values:
0 – Quality tooltip is disabled.
1 – Quality tooltip is enabled.
Default Value:1
See Also