Designing phase messages

Using the phase logic, you can require a message be sent or received before the state transition occurs. This feature is useful when running multiple recipes that share equipment or where the recipe has embedded phases that must complete before the recipe can continue (using link groups for communication between phases).

Messages are also used for reporting values to Batch Historian, sending a text message to an operator, or waiting for an operator's input.

In the phase logic, write the instructions for the state where the message is either sent or received. The message that is sent or received is defined at the phase class level in DeltaV Explorer. Reference the message in the phase logic using the message ID created in DeltaV Explorer.