Method for Operating a Cyclically Operating Automation Controller, Automation Controller and Engineering System

Abstract

A method for operating a cyclically operating automation controller, the method being executed within a cycle time of the automation controller, wherein input data is read from input peripherals (1st Step), the input data is stored in a process image memory for inputs, a user program is launched (3rd Step), a plurality of program instructions generating output data based on the input data stored in the process image memory for inputs, the output data is stored in a process image memory for outputs after execution of the last program instruction, the output data from the process image memory for outputs is written to output peripherals, where data backup of remanent data is performed within a time window which opens upon completion of the 3rd step and recloses upon commencement of the 1st step.

Dependencies are inferred from the claim text.