User Guide

2
Chapter 8 - Trend View
Using the Trend Application
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Siemens Industry, Inc.
BACnet Field Panel Web Server User Guide
125-3584
2017-07-31
5. To close the Trend graph, click the on the title tab of the trending pane.
Customizing a Trend Graph
Trend graphs can be customized within BACnet Field Panel Web Server.
Customization options include:
● Vertical access values
● Dynamic display
● Viewing more data
● Line color and thickness
● Fill alpha
● Chart type
Vertical Access Values
To change the values of the vertical access, use the numeric scroll box to choose
values.
Dynamic Display
To view the trend(s) dynamically, check the
Dynamic check box at the top of the right
pane. The delay intervals can be changed using the numeric scroll box at the top of the
right pane. The delay values display in seconds.
NOTE:
If the
Trend Object type is time-based, and the Stop when full check box is not
checked, it is recommended that the value of the Trend Object is set to five (5)
seconds or more.
Otherwise, during dynamic trending, when the buffer is filled, the first data sample will
drop off to make space in the buffer. Because it takes more than one second for this
action, the Trend graph will be unable to display the current data samples accurately.
Clicking the
Zoom out button will also allow the longer time span to display, but this
must be done manually, and every time the buffer fills.
Viewing More Data
The trend graph defaults to displaying the 50 most recent data samples.
To view more data, click the “Get more data” button in the top left corner of the trend
graph: