Patent ID: 8429654

Claim:
A method comprising: generating multiple events associated with execution of a recipe control module by a controller in an industrial process control system that is associated with production or processing of a product, the recipe control module defining production or processing requirements for a batch of the product and having a set of phases, each phase associated with a sequential control module, each sequential control module configured to implement the associated phase of the recipe control module, each event associated with a unique identifier; storing the events in a buffer of a memory in the controller; communicating the events from the buffer to a control data access server for delivery to a supervisory device associated with the controller, the control data access server configured to provide secure data access to and from a control execution environment of the controller; delivering, by the control data access server, the events to a notification client for storage in a notification queue; retrieving, by a notification manager, the events from the notification queue and storing the events in an event list; determining, by an event system data component, if one or more events are missing using the unique identifiers associated with the events from the event list; receiving, by the controller, a request from the control data access server to recover one or more of the events for the supervisory device in response to determining that at least one event is missing; recovering at least one of the events from the buffer; communicating the at least one recovered event to the control data access server for delivery to the supervisory device; and preventing deletion of the recipe control module until all events generated by the recipe control module have been journaled by the supervisory device.