| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent one sequence control network from performing sequence control on the basis of incorrect data even when a communication error occurs between the other sequence control network and an interface module, in the interface module which connects the two sequence control networks having different data management methods, respectively. <P>SOLUTION: In the interface module, transmission data for the time of a communication error which is transmitted to sequence control networks and a data transmission sequence for transmitting the transmission data to the sequence control networks are provided (S1, S2); it is determined whether or not a communication error occurs between the interface module and the sequence control networks (S3); and the transmission data to be transmitted to one sequence control network is transmitted to the one sequence control network according to the data transmission sequence to the one sequence control network when a communication error occurs between the interface module and the other sequence control network (S6). <P>COPYRIGHT: (C)2013,JPO&INPIT |
