An automaic burdening system is established by combining the superiority of both PLC and IPC.The compositions of hard-ware and software and control strategy as well as the technology of multiple programming are discussed.The communication mechanism between PLC and IPC,the data transfer between main routing and sub-routings in host computer and data refresh are introduced.%结合PLC和工控机的优势构建自动配料系统，讨论系统的软硬件构成及控制策略、多线程等问题。介绍工控机与PLC的通信机制，上位机内部主线程和通信子线程间的数据传递、刷新方法。
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