Echelon i.LON SmartServer 2.0 - Manual (Page 197)

i.LON SmartServer 2.0 Programmer’s Reference 13-9
<UCPTcompValue LonFormat="">2</UCPTcompValue>
<Rule>
<UCPTindex>0</UCPTindex>
<UCPTinputPath>DataPointFormat[UCPTnickName="nviScene"]</UCPTinputPath>
<UCPTinputFieldName>scene_number</UCPTinputFieldName>
<UCPToutputPath>DataPointFormat[UCPTnickName="nvoSwitch"]</UCPToutputPath>
<UCPTcompFunction
LonFormat="UCPTcompFunction">FN_NUL</UCPTcompFunction>
<UCPTmultiplier>0</UCPTmultiplier>
<UCPTconstant
LonFormat="">100.0 1</UCPTconstant>
</Rule>
</Case>
Each case rule is defined by a <Rule> element. The following table describes the properties that
should be filled in within each <Rule> element to define each case rule.
Property Description
<UCPTindex> The index number of the case rule.
NOTE: If more than one case rule attempts to assign a value to the
same data point or data point field, the case rule listed last in the
XML file (i.e. the one with the highest index number) takes
precedence.
<UCPTinputPath> A reference to the <UCPTnickName> property of the input data
point. The value of this data point will be compared to the
<UCPTcompValue> selected for the case rule using the
comparison function defined by the <UCPTcompFunction>
property.
If the result of the comparison is True, the case rule will modify the
value of the input data point using the operations determined by the
<UCPTmultiplier> and <UCPTconstant> properties, and assign the
resulting value to the output data point specified in the
<UCPToutputPath> property.
<UCPTinputValue> If the input point has a structured data type and you need to
evaluate a field within the structure, you need to specify that field
in this property.
You do not need to specify this property if you are evaluating a
scalar data point or a structured data point as a whole.
<UCPToutputPath> A reference to the <UCPTnickName> property of the output data
point in which the value calculated by this case rule is to be stored.
<UCPToutputValue> If the output point has a structured data type and you are writing to
a field within the structure, you need to specify that field in this
property.
You do not need to specify this property if you are writing to a
scalar data point or a structured data point as a whole.
<UCPTcompFunction>
<UCPTcompValue>
If you are evaluating a data point in the case rule, specify the
<UCPTcompFunction> and <UCPTcompValue> properties.
If you are not evaluating a data point in the rule, specify FN_NUL
for <UCPTcompFunction>. You do not need to specify a
<UCPTcompValue> property in this case.
The <UCPTcompValue> selected must use the same value format