plcs

网络可编程逻辑控制器; 平面光波导分路器; 控制器; 可编程控制器; 可编程序逻辑控制器

双语例句

Royal Dutch Shell PLCs$ 70 billion deal to buy BG Group PLC marks the most aggressive step yet in the competition to be the worlds dominant supplier of liquefied natural gasa fuel with a fast-growing and increasingly global market. 荷兰皇家壳牌公司斥资700亿美元收购BGGroup。液化气的全球市场正在飞速增长。迄今为止，这一收购是对世界最大液化气供应商的争夺中最激进的一步。

The problems came when the company that was providing our PLCs decided to make the product line we were using obsolete. 的问题时，该公司是提供我们的PLC的决定使我们的产品线所使用的过时。

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。

That company's new, second-generation PLCs were not up to our standards. 该公司的新，第二代的PLC并没有达到我们的标准。

Application of Siemens Redundant PLCS in the Air Compressor System of Power Plant 西门子冗余PLC系统在电厂空压机系统中的应用

It would allow for more decisive management, doing away with the short-term targets and reporting of PLCs. 它将为更果断的管理留有余地，摆脱上市公司的短期目标和报告制度。

Programmable Logic Controllers ( PLCs) have been widely used in industry. 可编程逻辑控制器（的PLC）已广泛应用于工业。

According to the actual requirements of loads in underground mechanized face, the overall design scheme that three CPUs unite for controlling and protecting the motors is proposed and the real-time communication systems between PLCs, PLC and MCU and PLC and color liquid crystal display are developed. 针对综采工作面负荷的实际要求，提出了多CPU联合控制的总体方案，建立了单片机与PLC、PLC与PLC以及PLC与大屏幕彩色液晶显示屏之间的实时通讯系统。

Application of PLCs and Their Communication on Brake Test System PLC及其通信技术在制动机试风系统中的应用

Operator Control System of Lingbao Converter Station In the system, PLCs perform real control units and PC-based operator control center performs monitor function. 灵宝换流站运行人员控制系统介绍该结构使用PLC作为现场控制单元，组态系统作为现场监控单元，通过配置视频卡来记录生产过程，形成了现场控制与监控网络层面。

The components of this controller are PLC produces of SIEMENS S7-200. Make use of PLCs multiple trains of pulses operation ( PTO) output instruction can expediently control step motor realize to layers warehouse fixed position. 利用PLC多个脉冲串PTO（多段管线）输出指令，可以很方便地控制步进电机实现对叠层仓库的定位控制。

Application of PLCs in Loads Controlling System of Plane Power Generator 基于PLC的机载发电机试验负载控制系统

The Solution of Synchronization Between Several PLCs Based on Serial Communication 基于多个PLC的电机测试系统中同步性问题解决

Compared with other PLC systems, the hardware of the system adopts two upper computers that are redundant to each other, dual hot-backup PLCS in main local control stations and communication network redundancy. So high-reliability and stability of the whole system are assured. 与其它PLC控制系统相比，本系统硬件结构采用两台上位机互为热备，主要现场控制站PLC双机热备以及通讯网络冗余，从而保证了整个系统的高可靠性和稳定性。

Design and realization of communication with a few PLCs based on the TCP/ IP network 基于TCP/IP网络中多PLC通信的设计和实现

Synchronization and Cooperation between PCS 7 PLCS 基于PCS7的多PLC之间的程序同步和协作

In this system, FP PLCs are used for controlling the whole procedures of Die-castings, while the industrial PC is operated as host computer for real time data acquisition and display for extrusion force and speed curves, adjustment and setting of control parameters of PLCs. 在系统中，松下FP系列PLC作为下位控制机实现整个压铸过程动作的控制，工控机作为上位机实现压射力和压射速度曲线的实时采集和显示，以及PLC控制参数的修改和设定。

The method of communication between main-machine and submitted-machine which based on PLCs and intelligent meters 基于PLC和智能仪表的下位机群与上位机通讯的实现

The equipment layer regards S7-200 PLCs as core of the control. It makes synthetical monitoring and control to various kinds of instruments, electrical machinery, valve, switch and so on in the scene through measuring various kinds of parameters on-the-spot. 设备控制级以S7-200PLC为控制核心，通过检测各种现场参数完成了对现场各种仪表、电机、阀门、开关量等的综合监测和控制；

To achieve the half-duplex communication among PLCs, two critical problems: Transmit enable and reliability of communication are solved. 解决了收发切换和通信可靠性问题。

The communication protocol of FP series PLC in this paper particularly. The principle and method which achieves serial communication between Computer and FP series PLCs is expatiated. 本文对松下FP系列PLC的通讯协议进行了详细的介绍，阐述了计算机与松下FP系列PLC之间串行通讯的原理和方法。

The development assistance process and auto-generation process for the embedded-based network numerical control software are presented, as well as those for embedded-based PLCs software. 规划了嵌入式网络数控软件自动生成与辅助开发过程，以及嵌入式可编程序逻辑控制器辅助开发与软件生成过程。

So it was convenient to achieve the data communication between PLCs and upper computer only through the RS232 serial port of a PLC and the upper computer. 这样只用单台PLC与上位机之间的RS232串行通讯就可以实现所有PLC与上位机的通信。

Signal and data transferring and sharing were realized by using MPI network to communicate data among PLCs. PLC间采用MPI网进行数据通讯，实现信号和数据间的传递和共享。

The advantages of communication mode based on PPI protocol between computer and S7-200 PLCs are analyzed. The approach to acquire PPI protocol by intercepting communication data is introduced. 分析了计算机与S7-200PLC间基于PPI协议通讯的优点，介绍了通过数据侦听方式获取PPI协议下的通讯数据并对其进行分析，从而解析出PPI协议的方法。

The Ethernet Communication Between PLCs 可编程控制器之间的以太网通信

This control system has Two-tier bus architecture; one is between JC-9 temperature detection module, gas mass flowmeter and the PLC, the other is between PLCs and one computer. 本系统总体结构为两层总线结构，一层是由JC-9温度检测模块、气体质量流量计与PLC之间构成总线结构，另一层是由多个PLC与一台工控机之间构成总线结构。

Programmable logic controllers, also called programmable controllers or PLCs, are special-purpose computers used for industry control. 可编程逻辑控制器（PLC），是一种为工业控制特别设计的专用计算机。