web-based multi PLC remote controlling system

摘要

PURPOSE: A web-based multi PLC remote control system is provided to offer a system controlling a plurality of PLC's through the web without a specific program in a remote place. CONSTITUTION: A client(100) inputs and transmits work to be executed using a PLC remote control system and carries out confirmation for executed work. A client manager(200) judges the correctness of a command transmitted from the client(100) and transmits its result to the client(100). A PLC manager(300) transmits a command received from the client manager(200) to the external and is provided information for the status of the external periodically. A central server comprising a log manager(410) permits the access of the client(100), provides information for remote control work based on the web and transmits work by the request of the client(100) to the PLC manager(300). The log manager(410) manages information related to the work request of the client(100) and log contents transmitted from the PLC manager(300) and the client manager(200).