Production Statuses and Events
Production Statuses are used to indicate the current status of a Production Event. Statuses are used as follows:
Indicate the statuses that a batch cycles through.
Indicate the status or disposition of a Production Event or User-Defined Event.
Indicate the Inventory or Work In Progress of an event on a Production Unit.
NOTE: Starting with Plant Applications 8.1, users can create more than 255 production status.
Production Event Status Changes
Production Statuses are defined to indicate if the Event is counted for production and/or inventory. Production Event output that has not yet been consumed by a Production Unit is considered inventory or work-in-progress. When the output from a Production Event is consumed or rejected (or wasted), the event is no longer available in inventory. Output that is completely built by a Production Event on a Production Unit but that has not yet been released to the next processing step is considered inventory.
When a status change occurs, the status of the Production Event changes and is automatically updated on any displays where that Production Event is shown. In addition, the status change may trigger alarms and calculations. These alarms and calculations may be on the unit where the change occurred or may be on upstream or downstream units. This provides a variety of ways to highlight an issue with a product that may need to be dealt with upstream or downstream in the production process.
Changing the status may also affect how Production Events can be routed through the process. Each Production Unit has one or more Raw Material Inputs defined. For each input, the valid statuses available to move upstream product into the next Input are defined. Through this configuration, rejected statuses can be prevented from moving further in the process.
Changing the status of a Production Event can affect its potential paths through the process. The case that is potentially most important to consider is what should happen when the status is changed after a Production Event has already moved forward in the process. Sometimes the output of the next unit in line needs to be automatically rejected, other times the process may need to be shut down. Both can be achieved through Alarms and Calculations. Specifically, a genealogy calculation can be employed.
Genealogy calculations are triggered by additions or updates to the genealogy of events across Units. Through a genealogy calculation, changes in the data or the status of a Production Event can fire calculations upstream and downstream in the process, which can in-turn provide alarming or automatic disposition at that point in the process.
Production Status Attributes
Production Status (Name): Assigns a unique name to each Production Status in the system.
Description: Describes the Production Status.
Status: Indicates whether the status is Good or Bad to determine whether the Production Event should be counted as Good Production.
Production: Determines whether a Production Status should be considered a Valid Status for Production Counting. Set to Yes to include the status.
Inventory: Determines whether a Production Status should be considered an Inventory status. Set to Yes to include the status.
Bypass History: Stops history recording when periodic event dimension updating is set to monitor event progress during the course of long production events. Refer to Periodic Event Dimension Update.
Lock Event Data: Places a permanent lock on the particular Production Event or User-Defined Event status to lock all associated data and prevent data changes. Only transitions from one locked status to another locked status are allowed. Locking is enforced by the database update procedures. Once an event is locked, the update procedures will not allow changes to the data. Refer to Locking Production Statuses.
Icon: In Genealogy View, the icon is shown in the Inventory Load list and the flag is shown while dragging and dropping Production Events into a Raw Material Input.
Color: In Genealogy View, the status color is the fill color of the Production Event when it is on a Raw Material Input position or is the color of the Production Event in the family tree view.