Adding a Trend Extension - Metasys - LIT-1201531 - System Integration - BACnet Controller Integration - 10.1

BACnet Controller Integration Technical Bulletin

Product name
BACnet Controller Integration
Document type
Technical Bulletin
Document number
Revision date

About this task

Adding trend extensions to objects allows the user to collect historical data for one or more attributes of an object. Afterwards, view that data or forward the data to a Metasys Application Server for long-term storage. Use Trend Study to view Trend extensions from multiple items at the same time.


  1. In the Extensions Wizard, click New in the Trend row. The Insert Trend Wizard Select Attribute screen appears.

    The trended attribute defaults to Present Value. To trend a different attribute, click other. The attribute list appears.

    Figure 1. Insert Trend Wizard (Select Attribute Screen)

  2. Select an attribute and follow the prompts in the Wizard to complete the addition of a Trend Extension.
  3. Click Finish. The Extensions Wizard appears with the new attribute listed under Trend.