Echelon SmartServer 2.2 - Manual (Page 417)

418 Scheduling
2. The Data Logger: Data Points Web page opens. Select the data points to be recorded by the
Data Logger from the SmartServer tree. References to the selected data points ( ) are added to
the bottom of the Data Logger functional block tree, and references to the Data Logger functional
block are added directly below the selected data points (
).
To record a data point of an external device that is being managed with OpenLNS CT, OpenLNS
tree, or another OpenLNS application, you must first copy the data point from the OpenLNS tree
to the SmartServer tree (see Adding Data Points to SmartServer Applications in Chapter 4 for
more information).
3. View the following properties of the selected data points:
Data Point Displays the name of the data point being recorded using the following
format: <network>/<channel>/<device>/<functional block>/<data point>.
This is also the location of the data point in the SmartServer tree.
Poll Rate Displays the rate at which the data logger records the value of the selected
data point. The default rate is 15 minutes. If the poll rate is set to 0, the data
point will only be logged when its value changes.
Unit Displays the unit string describing the data point to be updated. A
SNVT_temp_f data point, for example, has “degrees F” describing the data
point. A SNVT_switch data point has “% of full level” and “state code”
unit strings describing its state and value fields. This field is read-only. You
can edit the unit string of a data point in the Configure - Data Points Web