Batch Analysis and the Plant Model
To better represent the batch execution system (BES) data within Plant Applications, the batch events are stored in the virtual unit. The unit procedure events will then be stored as production events on the appropriate equipment units. The operation and phases associated with each of the unit procedures will be stored as user-defined events on the appropriate unit procedure unit. Phase data will still be stored in variables and organized in the appropriate phase variable groups, but it will be stored at the end time of the phase event as opposed to the end time of the batch event. The variables will also be of event type "User Defined Event" so that they will be associated with the phase user-defined event.
The virtual batch unit is created at the production unit level and the name is enclosed in angle brackets, < >. This unit will be used to capture the start and end time of the batch. There will be one virtual unit per production line. Genealogy links will be associated between the main batch and the unit procedures on each of the equipment units.
The equipment units will represent one piece of equipment that was used in the batching process. The unit procedures that were associated with these pieces of equipment will be stored as events.
Operation and phases will be created as user-defined events on the equipment unit. These will be linked to the unit procedure event. Phase events will also be linked to the operation events. There will be one user-defined event subtype for operations and one user-defined event subtype for phases per equipment unit.
A special variable group is created for identical variables that exist in different phases. These variables are put in the P:Common Variables variable group.
For more information on configuring the Plant Model, see the topic Configuring the Plant Model in the online help.
Virtual batch units are enclosed with angle brackets, < >.
The Extended Information field in the Unit Properties Configuration dialog box, which is opened by right-clicking on the unit and selecting Edit <production unit> Properties, is populated with the value BATCH: and this must not be changed.
The URL field in the Edit External Link window is pre-filled and must not be changed.
The Input tag field in the Variable Sheet is pre-filled and must not be changed.
The URL field in the Edit External Link window is pre-filled and must not be changed.