Echelon i.LON 100 e2 Internet Server User Manual

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LON 100 Internet Server Programmer’s Reference

Property Description

Optional. This value is initially taken from the

LON 100

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

LON 100 will continue to enforce

the limit taken from the resource files.

Optional. The invalid value for the data point. If the data point

is updated and equals this value, the 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
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

LON 100 will continue to enforce

the value taken from the resource files.

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 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.

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 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 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.

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