[{"title":"( 3 个子文件 564KB ) AB PLC的OPC通信","children":[{"title":"AB PLC的OPC通信","children":[{"title":"1769-L30ERM OPC.png <span style='color:#111;'> 340.63KB </span>","children":null,"spread":false},{"title":"Micro1400 OPC.png <span style='color:#111;'> 275.09KB </span>","children":null,"spread":false},{"title":"AB PLC OPC.opf <span style='color:#111;'> 1.15KB </span>","children":null,"spread":false}],"spread":true}],"spread":true}]