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AVEVA™ Unified Engineering

Query the Session History for an Element or Attribute

Query the Session History for an Element or Attribute

  • Last UpdatedNov 14, 2025
  • 1 minute read

Lets you query modification history for a given attribute (that is, session numbers during which the attribute was modified).

Examples

Q HISTORY DIAM

Gives all sessions in which DIAM attribute was modified.

Notes: HISTORY is an array type pseudo-attribute, so that qualifying positions may be appended to query specific occurrences in the modification history. For example:
Q HISTORY[2] DIAM
gives second most recent session in which DIAM attribute was modified.

History records are restricted to a maximum of 120 sessions.

Command Syntax

Q HISTORY attribute_name

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