Operator prompts and dynamic references

Overview of changes to Paint application

In the paint application we will now add an operator prompt to ask the operator if the batch should be sent to Product storage or to Waste.  If the response is Product, the operator will be asked how many gallons; if Waste, the entire contents will be sent to Waste. 

In the example, we will request operator responses in two formats: Boolean and floating point. 

Following is an outline of the steps we will follow to implement these changes. Subsequent topics give more details.

  1. In the DeltaV Explorer, create the two phase messages that will be used in the DRAIN phase logic.
  2. In Control Studio, modify the DRAIN running logic to add a request to send a Boolean operator prompt to ask whether the batch should be sent to Product or to Waste. 
  3. Add transitions to branch depending on whether the response is Product (Yes) or  Waste (No).
  4. If the response is Waste, set the BLENDER_OUTLET command to drain to waste.  If the response is Product, ask how many gallons are to be released to product, then set the BLENDER_OUTLET command to release to product.  
  5. Add a step to record a LOGEVENT that can be viewed as an event record in the Process History View application.