Echelon i.LON 100 e2 Internet Server User Manual
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LON 100 Internet Server Programmer’s Reference
Property Description
<UCPTmaxValue>
Optional. This value is initially taken from the
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resource files, if it exists for the data point type selected. This
value represents the maximum value the data point can be
updated to.
NOTE: You can use DataServerSet to change this limit in the
Data Server. However, you must program your application to
enforce the new limit, as the
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the limit taken from the resource files.
<UCPTinvalidValue>
Optional. The invalid value for the data point. If the data point
is updated and equals this value, the <UCPTpointStatus> of the
data point will be updated to the AL_VALUE_INVALID. You
could create an Alarm Notifier to trigger an alarm notification
when this happens. For more information on Alarm Notifiers,
see Chapter 8, Alarm Notifier.
A default value for this property will be assigned based on the
<UCPTformatDescription> selected.
NOTE: You can use DataServerSet to change this value in the
Data Server. However, you must program your application to
enforce the new value, as the
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the value taken from the resource files.
<UCPTsettings>
A string of 16 comma-separated Boolean values. You could use
these flags to determine access rights to the data point with your
application.
You can optionally specify a <UCPTsetting> string when you
call the DataServerList function. This string will be compared to
this property for each data point. If any bits in either string
match, DataServerList will include the data point in its output.
If no bits match, it will not include the data point. You could use
this feature to restrict which users can view and access to
certain data points.
<UCPTvalueDef>
This element can be used to create a series of value definitions
for the data point. Each value definition is defined by a user-
named attribute within the <UCPTvalueDef> element. These
value definitions represent preset values that you can use to
update the value of the data point when other
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applications such as the Event Scheduler or the Alarm Notifier
reference it.
The sample <Data> parameter shown in this section defines two
preset value definitions for the data point: OnValue and
OffValue.
NOTE: The values entered here must be in valid format, as
defined by the network variable type assigned to the data point.