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介绍采用一台工业PC机与多台单片机通信组成集散控制系统的方法。单片机作为下位机，完成对现场控制参数的采集并发出控制信号；PC机作为上位机，完成各种复杂算法的运算并将运算结果传送给下位机。此种控制方式充分利用了PC机与单片机的优势，对多台退火炉的集中温度控制是非常适用的。
Introduced using an industrial PC and more than one SCM communication distributed control system. SCM as the next crew to complete the on-site control parameters acquisition and issue control signals; PC as a host computer to complete the operation of a variety of complex algorithms and the results of the operation sent to the next crew. This control mode takes full advantage of the advantages of PC and SCM, multiple annealing furnace temperature control is very applicable.