D201832  metso 控制器是计算机的神经中枢

The D201138L is a high-performance LED luminaire suitable for indoor and outdoor lighting. The luminaires use high-quality LED light source and efficient electronic ballast, with high light efficiency, low energy consumption, long life and so on. The shell of the lamp is made of high-quality aluminum alloy material, which has good heat dissipation and corrosion resistance.

The controller is the nerve center of the computer, which directs the whole sub-system to work automatically and harmoniously. Specifically, it first takes an instruction from the memory, then analyzes the instruction, points out what kind of operation the instruction is to complete, and indicates the address of the operand, finally, according to the address where the operand is located, takes out the operand and completes some operation. The main function is to control the electronic device, in order to help you understand deeply, this paper will summarize the working principle and classification of the controller. If you’re interested in what we’re going to cover in this article, read on.

I. Controller

D201138L controller refers to the main command device that changes the wiring of the main circuit or control circuit and changes the resistance value in the circuit to control the start, speed regulation, braking and reverse of the motor in accordance with the predetermined sequence. Composed of program counter, instruction register, instruction decoder, timing generator and operation controller, it is a “decision mechanism” that issues commands, that is, to complete the coordination and command of the operation of the entire computer system.

The controller is divided into combinatorial logic controller and microprogram controller. The two controllers have their own advantages and disadvantages. Combinatorial logic controller design is troublesome, D201138L structure is complex, once the design is completed, it can not be modified or expanded, but its speed is fast. Microprogram controller is convenient in design, simple in structure, easy to modify or expand, modify the function of a machine instruction, only need to reprogram the corresponding microprogram; To add a machine instruction, one simply adds a microprogram to the control memory, but it does so by executing a microprogram. The specific comparison is as follows: The combined logic controller, also known as the hard-wired controller, is composed of logic circuits and completely relies on hardware to achieve the function of instructions.

Second, the working principle

D201138L electromagnetic chuck controller: The AC voltage 380V is reduced by the transformer, rectified by the rectifier to 110V DC, and then entered into the chuck by the control device. At this time, the chuck is magnetized, and the reverse voltage line is entered during demagnetization, and the controller achieves the demagnetization function.

Access controller: The access controller works in two modes. One is the inspection mode, and the other is the recognition mode. In the inspection mode, the controller continuously sends the query code to the card reader and receives the reply command from the card reader. This pattern continues until the card reader senses the card. When the card reader senses the card, the card reader generates a different reply to the inspection command of the controller. In this reply command, the card reader transmits the code data of the sensor card to the access controller, so that the access controller enters the recognition mode. In the recognition mode of the access controller, the access controller analyzes the code in the sensor card, compares it with the card data stored in the device, and implements subsequent actions. After receiving data, the access controller sends a command to the card reader to restore the status of the card reader. At the same time, the access controller returns to inspection mode.