Archiving process data for process control

摘要

The process data consists of an event, an equipment number (G1,G2...) and an event number (TI1,TI2...). Each equipment number is associated with an item of equipment and defines the equipment in which the event occurred. The event numbers are sequential in the order of occurrence. For each process data item from an equipment, the equipment number and a reference address (EZA11,EZA12...) for an event pointer list are placed into a cell of a device list. The event number and the address (ELA2,ELA6...) of an event list (EL), in which the event will be stored, are placed in the cell of the event pointer list with the reference address or in another cell with an address which is derived from the reference address.