Abstract
This paper describes APS system-Automatic Programming system for Sequence control-which is a special computer compiler created to simplify and standardize the procedure for designing logic control systems. It is discussed that by the model of a kind of a sequential machine, logic control systems can be generated from the input of the sequence program describing the sequential motions. The concept of APS system and an example application are also reported. The system is now being used in an automobile manufacturer, machine tool builder, material handling equipment manufacturer and computer service center etc. The result of applications to several kinds of machinery shows that the system is an effective tool for the standardization of design procedures.
