西门子plc与上位机通信的源码程序，详细的说明西门子ppi通信协议的应用-Siemens plc Communication between PC and the source program, detailed description of the application of communication protocol Siemens ppi
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002242s ]
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SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001964s ]
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SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002271s ]
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