| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a PLC system which can increase the number of input/output contacts of a PLC by combining a system for directly connecting an input/output module with the PLC and a system for connecting a remote input/output module with the PLC using a network. <P>SOLUTION: The PLC system of this invention contains a remote input/output module and an extended input/output module and constitutes a ring topology with the remote input/output module and the extended input/output module. <P>COPYRIGHT: (C)2012,JPO&INPIT |
