Hyundai Parts,Machinery Spare Parts,Hyundai Aftermarket Parts,Dump Truck Spare Parts JINING SHANTE SONGZHENG CONSTRUCTION MACHINERY CO.LTD , https://www.sdkomatsuexcavatorparts.com PLC has a variety of programming methods, which can be selected for different occasions. However, in solving logical sequence control with the nature of concurrency, jump or selection, the function diagram method is undoubtedly the best programming method. The function diagram belongs to a graphic language, which can simply describe more complicated control events, so it is also one of the development directions of the PLC programming language.