User Manual

Tren d Viewer
Parameter Description
Add Addsanewcurve tothetrendviewer object
Re move Removes theselectedcurve fromthetrendviewerobject
Name Thesymbolicnameofthecurve. Thisnameisshownifa
Trend Viewer Legend isused.
Tag Thetagtopresentvaluesfor
LogItem Theitemto belogged
Expression Expressionona curveisevaluatedandappliedwhenthe
curveisdrawn. Iftheexpressionvalue whenthetagis
loggedor cachedisofinterest, theexpressiononthelog
itemorthetagcanbeused. SeesectionExpressions
Color Thecolorofthecurve
Thickness Linethickness
MinimumValueTag Atagthatdynamicallysetswhatvalueonthecurvethat
correspondsto theminimumvalueof theYaxis. This
propertywillscalethecurvewhenthevalueo f thetagis
differentfromtheminimumvalueoftheYaxis(optional).
MaximumValueTag Thetagthatdynamicallysetswhat valueonthecurve
thatcorrespondstothemaximumvalueoftheYaxis. This
propertywillscalethecurvewhenthevalueo f thetagis
differentfromthemaximumvalueoftheYaxis(optional)
DynamicsGroup
Several trend viewer properties can be made dynamic, i. e. dependent on tag
values. This may be useful, for example, when wanting to present trend viewer
values of different formats in the same trend viewer object.
If dynamic trend viewer properties are used, the corresponding proper ty settings
made in the Value Scale group for the trend vie wer object are ignored.
Parameter Description
Value ScaleM
in/Value
ScaleMax
Minimum/max
imumvalueofthe Y-scale. The design
modevaluei
susedonlyforincreasedunderstandingin
designtim
ewhentagvaluesdo notaffecttheminimum
andmaxim
umvalues.
Time S
pan
Theti
mespanof theX-axisi n seconds.
Tim
eOffsetinHistory
Mo
de
Mak
esitpossibletouse anoffsettostepbackin history
mo
de. Thestartv alue iswhenhistory modewasentered.
T
heunitisseconds.
If the Time Span value is increased, the trend viewer will initially display only the
previous number of entries (that was displayed before the increased time span).
It will not collect older data for display. Only when the additional time added
onto the time span has elapsed, the cache will be filled with data and a full curve
is displayed.
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BeijerElectronics, M AEN831P