【摘要】 如何经济地使用PLC多路监控系统,提高PLC的性价比,是人们探讨的一个问题。本文以温度监控为例,介绍了在不增加模拟量输入模块数量的情况下,使系统处理温度的通道数由原来的4路扩展到36路。比较全面地介绍了PLC监控原理、系统硬件组成和软件设计。更多还原

【Abstract】 As an example of temperatare supervision,It is introduced that the channel number of system processing temˉperature is extended from4path to36path in the condition of no adding analog input module amount.The PLC supervision principe,hardware composition and software design are also presented.更多还原