公司主营进口PLC模块，可编程控制器，伺服控制系统，和DCS备件等，例如：ABB、AB、GE， Bently，FOXBORO. MOTOROLA. XYCOM. HONEYWELL. TRICONEX. SCHNEIDER. REXROTH. YOKOGAWA .KUKA .OVATION .HIMA.等。

  ABB086349-002PLC的硬件组成与微型计算机相似，其主机由CPU板、存储器、输入／输出（I／O）接口、电源等几大部分组成；可配备如编程器、图形显示器、通信接口等外部设备。

  CPU也称处理器，是由一片或几片大规模集成电路芯片组成的，相当于人的大脑，是PLC的核心部分；ABB086349-002CPU的作用是可通过接口及软件向系统的各个部分发出各种命令，同时对被测参数进行巡回检测、数据处理、控制运算、报警处理及逻辑判断等，实现对整个PLC的工作过程进行控制；目前大多数小型PLC都用8位或者16位单片机作CPU。

I／O接口是输入（IN）／输出（OUT）接口的简称，是PLC主机与被控对象进行信息交换的纽带；PLC通过I／O接口与外部设备进行数据交换，PLC的输入输出信号有开关量、模拟量、数字量三种类型，所有的输入输出信号均经过光电等隔离，大大增强了PLC的抗干扰能力。

PLC common output form there are several? What are its characteristics?

A: Common output forms are relay output, thyristor (SSR) output, transistor output. The characteristics are: relay output type: CPU drives the relay coil, so that the contact draws, the external power supply through the closed contact to drive the external load, the open leakage current is zero, the response time is slow (about 10ms), can take a large external load; Transistor output type: the CPU through the optical coupling transistor off, to control the external DC load, response time is fast (about 0.2ms), can take the external load is small; Thyristor output type: The CPU makes the tridirectional thyristor off through optical coupling to control the external AC load. The open-circuit leakage current is large and the response time is fast (about 1ms).

1. Switching quantity logic control

Replace the traditional relay circuit, realize logic control, sequence control, can be used for single equipment control, can also be used for multi-machine group control and automation line. Such as injection molding machine, printing press, stapler machine, combination machine tools, grinding machine, packaging production line, electroplating line, etc.

2. Industrial process control

In the process of industrial production, there are some such as temperature, pressure, flow, liquid level and speed and other continuous changes of the amount (that is, the analog amount), PLC uses the corresponding A/D and D/A conversion module and a variety of control algorithms to deal with the analog amount, complete closed-loop control. PID adjustment is a kind of adjustment method used in general closed-loop control system. Process control is widely used in metallurgy, chemical industry, heat treatment, boiler control and so on.

3. Motion control

PLC can be used to control circular motion or linear motion. General use of special motion control module, such as single-axis or multi-axis position control module can drive stepper motor or servo motor, widely used in a variety of machinery, machine tools, robots, elevators and other occasions.

4. Data processing

PLC has mathematical operation (including matrix operation, function operation, logic operation), data transmission, data conversion, sorting, table lookup, bit operation and other functions, can complete the data collection, analysis and processing. Data processing is generally used in some large control systems such as paper, metallurgy and food industries.

5. Communication and networking

PLC communication includes communication among PLC and communication between PLC and other intelligent equipment. With the development of factory automation network, PLC now has communication interface, communication is very convenient.