The thesis described the procedure of the PLC control system evolving into advanced control system based on the field-bus, analyzed the construction of the system and its potential market.
本文描述了PLC控制系统向基于现场总线先进控制系统的演变过程，分析了系统结构组成及市场前景。
The computer control system hardware based on S7400 PLC, the system power supply, full digital 6RA70 DC drive configuration for the system and PROFIBUSDP field bus configuration are introduced.
提出了S7 400系列计算机控制系统的硬件配置、系统的供电方式、全数字直流调速系统6RA70的传动配置方案以及PROFIBUS DP现场总线的连接方式。
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