What is the difference between the Equipment Trend widget, Space Trend widget, the Building Network Trend widget, the Custom Trend viewer, the Trend Study widget, and the Trend Study Manager?
The following table defines the various trend charts available in Metasys UI.
| Name | Location | Definition |
|---|---|---|
| Equipment Trend widget | Equipment Dashboard | The Equipment Trend widget, Space
Trend widget, and the Building Network Trend
widget display a trend series for up to 10 points
on a desktop platform, and up to four points on
tablets and phone platforms from a single piece of
equipment or from the served-by chain of the
selected equipment, or building network item,
respectively. For example, if you are viewing the
Equipment dashboard for VAV-102, you can view a
trend series for VAV-102 and the equipment either
serving or served by VAV-102 points only. See
Trend widget (Default Trend)
for more information. Note: To distinguish these
three widgets from the Trend Study widget, which
can appear in the same locations, we use the term
Default Trend widget for Equipment, Space,
and Building Network widgets.
|
| Space Trend widget | Space Dashboard | |
| Building Network Trend widget | Building Network Dashboard | |
| Trend Study widget | Equipment, Space, Building Network Dashboards, and Views | View existing Trend Study extensions on the Equipment Trend widget and on the Building Network Trend widget. You can view newly created Trend Study extensions on the Equipment Trend widget only. The Trend Study widget appears on the dashboards instead of the Default Trend widget when you create a new trend study using Trend Study Manager. |
| Custom Trend viewer | Space Dashboard or Equipment Dashboard header bar
Note: The
Custom Trend viewer is available all the
time.
|
The Custom Trend viewer displays up to 10 trend series, which you can select from equipment and spaces, the Network tree, or Views. For example, you can view a trend series for several points from VAV-102 and AHU-1 at the same time. See Custom Trend for more information. |
| Trend Study Manager | User menu > Feature Management |
For Metasys UI on servers, the Trend Study Manager allows you to manage all of the trend studies on your site in one place, including creating, editing, and associating the trend studies with spaces and equipment. See Trend Study widget and Trend Study Manager for more information. |
How often do the trend charts obtain data from the database?
- The Equipment Trend widget, the Space Trend widget, the Building Network Trend widget, and the Custom Trend viewer display up to five years from the current date of the historical trend data.
- Regarding raw trend data, you can view data up to a minimum timestamp available across all of trend, alarms and audits. This means that you can view all of the raw trend data, subject to the constraints present to viewing maximum possible data.
- Regarding aggregate trend data, you can go back five years at the time of installation.
- Regarding the aggregate historical trend data, up to five years of data is obtained once, at the time of installation of the Metasys UI software. The aggregate historical trend data is obtained once a day for all current and newly added points with trend extensions.
How often do the trend charts update with current values?
By default, the Equipment Trend widget, Space Trend widget, the Building Network Trend widget, and Custom Trend viewer update with current values for the points every 30 seconds. However, dynamic, real-time updates stop when viewing aggregated data.
What type of trend extensions are supported?
You can view trend extensions on Present Value in the Equipment Trend widget, Space Trend widget, the Custom Trend viewer, and the Building Network Trend widget. In addition to the Present Value trend, all other trend extensions can also be plotted in the Building Network Trend widget.
Can I view raw and aggregated data for all time ranges?
How many trend extensions and trend samples are supported for viewing in the Metasys UI?
The Equipment Trend widget, the Building Network Trend widget, and Custom Trend viewer support approximately 300,000 trend extensions and 60 billion trend samples from the database.
When you view raw data on a desktop platform, the Metasys UI supports the display of 50,000 samples. When you are viewing 10 trend points, this equates to 5000 samples per point. If there are less than 10 points to be viewed, the limit of 50,000 is distributed equally to all points being viewed. For example, if there are five points, then each point supports viewing 10,000 samples for each point.
When you view raw data on a tablet or phone, the Metasys UI supports the display of 6,000 samples. When you are viewing four trend points, this equates to 1,500 samples per point. If there are less than four points to be viewed, the limit of 6,000 is distributed equally to all points being viewed. For example, if there are two points, then each point supports viewing 3,000 samples for each point.
Can I view historical data for a disabled trend extension?
You can view historical data present for a point on all trend widgets and on the Custom Trend viewer, based on the time range you select. A triangle icon indicates a disabled trend extension.
Are gestures supported in the trend charts on tablets and phones?
On tablets and phones, you can use the pinch gesture to zoom in or zoom out in the various trend charts. When you pinch to zoom in, you can reset the zoom level by tapping Reset Zoom. You can also stretch to zoom out. Zooming in or out changes the x-axis to display the appropriate date and time of the trend samples based on the zoom level.
On tablets and phones, you can use the swipe gesture to pan to the left, right, up, and down.