| 摘要 |
PURPOSE: An apparatus and system of controlling a PLC are provided to extract the control system based on network communications by applying a minimum apparatus to a PLC control system. CONSTITUTION: In an apparatus and system of controlling a PLC, a PLC(2) controls a connected facility. A telecommunication module transmits and receive external device and data. The remote ladder communications module(20) uses control data and manages the PLC The control data is received through the telecommunication module.
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