关键词: 关键词, 离散事件系统, 事件图, 网络化PLC控制系统, 系统建模, 程序编译

Abstract: Aiming at the networked multi-PLC（Programmable Logic Controller） control system, a compilation method for control program based on event graph is put forward. An event graph model converting control systems to discrete event systems is created. A new traversal rule is also put forward to decouple the event graph and extract the parallel event sequence. Through optimizing dynamic device assignment and variable synchronization, the event graphs are grouped, and the instructions can be downloaded to the corresponding PLC automatically. The experimental results show that the compile method can decouple parallel tasks from serial control program and disperse into corresponding devices suitably, and keep the running logic according with the original program.

Key words: discrete event system, event graph, networked PLC control system, system modeling, program compilation