Issue
A graphic displays the values of 50 points from a Third party controller.
The graphic launches normally and all point values update normally while the graphic is running.
Once the graphic panel is shut down the controller drops offline.
Environment
- 3rd Party Device
- BACnet
- Pinpoint
- Graphic
Cause
- While pinpoint graphics poll point values sequentially, when a graphic is shut down pinpoint will unsubscribe from all of the points at once.
- While some 3rd party devices can handle large numbers of unsubscribe requests, other devices may overwhelmed when too many requests to unsubscribe occur in close succession.
Resolution
- Use Plain English to mirror points form the 3rd party device to local numerics.
- Display mirrored points in the graphic panel rather than the actual points in the device.