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AVEVA™ Operations Management Interface

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Runtime behavior of the InTouchProxy object

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  • Last UpdatedJul 19, 2024
  • 1 minute read

The following information describes the runtime behavior of InTouchProxy objects. Runtime behavior is limited to the state of individual InTouchProxy objects.

After it has been deployed and is operating, an InTouchProxy object can assume one of several states, which are described in the following table.

State Change

Behavior

Startup

In this state, the InTouchProxy object connects to the InTouch node.

Going onscan

None.

Running onscan

In this state, the InTouchProxy object:

  • Services read and write requests for tag values in the target InTouch node.

  • Receives updated data from the InTouch node.

  • Sends values to the InTouch node.

  • Monitors and controls the connection to the InTouch node.

  • Detects alarm conditions, if alarming is enabled.

  • Monitors the data quality for InTouch data values and updates runtime error statistics if the quality is not GOOD.

Going offscan

None.

Offscan

The object is passive, and reads and writes to InTouch are not enabled.

Shutdown

In this state, the InTouchProxy object disconnects from InTouch.

An InTouchProxy object cannot establish a data connection to an InTouch application running in a terminal session.

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