Pages 29-34
A sequence control has been adopted for many years. But, as the circuit design of the sequence control depends on the experience of production engineers, it is insufficient to systematize the circuit design of a sequence control. The paper researches the creation system which automatically generates the perfect network figure (PNF). In order to generate the PNF, the paper proposes the methods of generating two databases from time chart. These two databases are called as the operation database and the subordinate database. In order to ascertain the goodness of the developed method, it was applied to the self-maintenance circuit.
