XT377e-E 一手货源，长期销售

易卖工控网（www.ymgk.com）提供”XT377e-E 一手货源，长期销售”，产品详情：品牌/厂家：、型号：XT377e-E、成色：全新、货期：现货 1天内发货、保修：365天，更多产品详情就上易卖工控网。

我司产品应用于以下领域：
1,《发电厂DCS监控系统》
2,《智能平钢化炉系统制造》
3,《PLC可编程输送控制系统》
4,《DCS集散控制系统》
5,《智能型消防供水控制系统》
6,《化工厂药液恒流量计算机控制系统》
7,《电气控制系统》造纸,印染生产线,变电站综合自动化控制系统

并且广泛应用于数控机械 冶金,石油天然气,石油化工,化工,造纸印刷,纺织印染,机械,电子制造,汽车制造,烟草,塑胶机械,电力,水利,水处理/环保,市政工程,锅炉供暖,能源,输配电。

了解更多品牌型号请联系：魏工 15396237607（微同）


 

优势品牌与型号

罗克韦尔（A-B）:1756，1785，1771，1746，1747，1769等，及部分停产备件  （1398,1326,1336,1394,2711等）如：1756-L63，2711-T10C10

施耐德（SCHNEIDER）：莫迪康，Quantum 140系列处理器、控制卡、电源模块等，如：140CPU11303

GE FANUC 发那科：IC697，IC693，IC695，IC200，DS200，DS3800，IS215，VMI,等，如：IC693CPU364

西门子（SIEMENS）： 摩尔（MOORE)；6ES5(948，946，947,等停产模块）；6ES7（400系列，部分）；TI,VIPA,SSB,6DD,6DS,6GK,6A V,6RA（部分型号）等。 西门子停产备件做的比较多，如：6ES5-948-3UR23, 39ACM28AEN

福克斯波罗（FOXBORO)：FBM,CP60，CP40，CP30等，如：FBM215, CP40B

ABB：机器人控制系统DSQC系列 ，BAILEY INFI 90及停产备件，如：DSQC 697

霍尼韦尔（HONEYWELL）：TDC3000，620、621、514、513等，如：51400700-100

英维斯(TRICONEX):TRICON  DCS的系列，如：3805E

西屋（westinghouse）：OVATION系统、WDPF系统、WEStation系统备件,如：1C31129G03

博世 力士乐（Bosch Rexroth）：Indramat，I/O模块,PLC控制器,伺服控制，驱动模块等，如：VT3006-S35/R1

摩托罗拉（MOTOROLA）：MVME 162、MVME 167、MVME1772、MVME177等系列，如：MVME162-212

另外还有 Woodward（伍德沃德）， 雅马哈(YAMAHA), 贝加莱(B&R)， 欧姆龙(OMRON),  KEBA， 安川(YASKAWA) 等品牌的停产备件
The development course of 1PLC
In the industrial production process, a large number of switch sequence control, it according to the logical conditions for sequential action, and according to the logical relationship for interlocking protection action control, and a large number of discrete data acquisition. Traditionally, these functions have been performed by pneumatic or electrical control systems. In 1968, GENERAL Motors Proposed to replace the electrical control devices, the following year, Digital America developed integrated circuit and electronic technology based control devices, the first use of programmatic means in electrical control, which is the first generation of Programmable Controller, called Programmable Controller (PC).

After the development of personal computers (PCS), the Programmable Controller was named Programmable Logic Controller (PLC) for convenience and to reflect the functional characteristics of Programmable controllers.

From 1980s to mid-1990s, IT was the fastest period of PLC development, with an annual growth rate of 30~40%. In this period, PLC in processing analog capacity, digital computing capacity, man-machine interface ability and network ability has been greatly improved, PLC gradually entered the field of process control, in some applications to replace the DCS system in the dominant position in the field of process control.

PLC has the characteristics of strong universality, easy to use, wide adaptability, high reliability, strong anti-interference ability and simple programming. PLC in industrial automation control, especially the position of sequence control, in the foreseeable future, is irreplaceable.

2 the composition of PLC

From the structure, PLC is divided into fixed and modular (modular) two kinds. Fixed PLC includes CPU board, I/O board, display panel, memory block, power supply, etc., these elements are combined into a non-removable whole. Modular PLC includes CPU module, I/O module, memory, power module, backplane or chassis, which can be configured in combination according to certain rules.

3 the composition of the CPU

The CPU is the core of PLC, the nerve center of role, each PLC has at least one CPU, which is according to the function of the PLC system program to receive and store the user program and data, collected by scanning way by the state or data from input devices, and deposited in the register of regulations, at the same time, the diagnosis of the power and the working state of the circuit inside the PLC and programming in the process of grammatical errors, etc. After entering into operation, the instruction is read from the user program memory one by one, and after analysis, the corresponding control signal is generated according to the task specified in the instruction to command the relevant control circuit.


The CPU is mainly composed of arithmetic unit, controller, register and the data, control and state bus that realizes the connection between them. The CPU unit also includes peripheral chip, bus interface and related circuit. Memory is mainly used to store programs and data, PLC is an indispensable component unit.


From the user's point of view, it is not necessary to analyze the internal circuit of the CPU in detail, but there should be enough understanding of the working mechanism of each part. The CPU controller controls the CPU by reading, interpreting, and executing instructions. But the tempo is controlled by oscillating signals. An arithmetic unit is used to perform numerical or logical operations under the direction of a controller. The register takes part in the operation and stores the intermediate results of the operation, which also works under the direction of the controller.

CPU speed and memory capacity are important parameters of PLC, which determine the working speed of PLC, IO quantity and software capacity, etc., thus limiting the control scale.

4 I/O module

The interface between the PLC and the electrical circuit is completed through the input/output part (I/O). The I/O module integrates THE I/O circuit of PLC, whose input register reflects the state of input signal and output point reflects the state of output latch. The input module converts the electrical signal into a digital signal into the PLC system, and the output module is the opposite. I/O is divided into switch input (DI), switch output (DO), analog input (AI), analog output (AO) and other modules.

Common I/O categories are as follows:

Switch quantity: according to the voltage level, there are 220VAC, 110VAC, 24VDC, according to the isolation mode, relay isolation and transistor isolation.

Analog quantity: divided by signal type, including current type (4-20mA, 0-20MA), voltage type (0-10V,0-5V,-10-10V), etc., divided by precision, including 12BIT,14bit,16bit, etc.

In addition to the above general IO, there are special IO modules, such as thermal resistance, thermocouple, pulse and other modules.


Determine the size and number of modules based on the number of I/O points. The I/O modules may be more or less, but the maximum number is limited by the capacity of the CPU to manage the basic configuration, that is, by the maximum number of floor or rack slots.