The server uses RS - 485 port and computer connection protocol to communicate with PLCs.
服务器使用RS-485接口和计算机连接协议与PLC实时通信。
The hardware composition, software control flowchart, system expansion, and the communication between host computer and PLCs are analyzed in detail.
详细分析了硬件的组成、软件控制流程、系统的扩展和PLC与上位机通信的实现方法。
Silicon-on-Insulator (SOI), boasting good optical, electronic and mechanical properties, is one of the common materials of Integrated Planar-Lightwave-Circuits (PLCs).
绝缘体上的硅（SOI）材料是制作平面光波导器件的一种主要材料，具有良好的光学、电学和机械特性。
The OMRON industrial Ethernet and serial communication network between OMRON PLCs and other devices are discussed with the successful case of Changsha the first waste water treatment factory.
针对长沙市第一污水处理厂一期扩建工程项目的成功案例，具体探讨了欧姆龙工业以太网和与第三方设备的串行通信网络。
The authors describe the constituent of hydraulic control system and the design of PLC software for some large roller hearth furnace with PLCs as its control centre for annealing bearing RACES.
叙述了某大型辊底式炉在轴承套圈余热退火过程中，采用可编程控制器(PLC)作为控制核心，自动进行工作的机械液压传动控制系统的组成、PLC软件设计及编制。
The authors describe the constituent of hydraulic control system and the design of PLC software for some large roller hearth furnace with PLCs as its control centre for annealing bearing RACES.
叙述了某大型辊底式炉在轴承套圈余热退火过程中，采用可编程控制器(PLC)作为控制核心，自动进行工作的机械液压传动控制系统的组成、PLC软件设计及编制。
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