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"Property write access denied" error when updating a BACnet trend

"Property write access denied" error when updating a BACnet trend

Issue

Attempts to change the buffer size on an existing BACnet trend result in the following error.

propert-write-access-denied.png

Saving Changes
Property write access denied
'~/BACnet Interface/IP Network_2/VAV01/Application/Trends/RmTmp/Buffer_Size'
BACnet

Product Line

EcoStruxure Building Operation

Environment

  • BACnet Trend
  • Building Operation Multi-purpose VAV
  • Building Operation Multi-purpose Controller

Cause

The buffer size cannot be changed on an enabled trend.

Resolution

  1. Right-click the trend in question and open the Properties window.
  2. Set Log enabled to False. Click OK
  3. Open Properties again and change the buffer size to the desired size. Click OK.
  4. Open Properties a final time to set the Log to enable back to True. Click OK.
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