Applies To:
  • CitectSCADA
  • ABCLX driver  All versions prior to v3.03.04.000

Summary:
As of v16 of the Allen Bradley firmware, predefined data types (e.g. MESSAGE, ALARM_DIGITAL etc.) no longer return the size of the structure when a tag is subscribed. This results subscriptions to structure members always returning 0. 

Solution:
This issue has been fixed in v3.03.04.000 of the ABCLX driver. 

Keywords:
 

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