Adept 10332 00714 Mv Controller Automatic Control System - China

Adept 10332-00714 MV Controller Automatic control system Brand Introduction Founded in Nairobi, Kenya, in 2006, Adept Technologies Limited is a tech-driven Business Process Outsourcing (BPO) company specializing in IT-enabled services (ITES).

With a proven track record, we empower clients globally, fostering agility, flexibility, and innovation for a competitive edge in the digital landscape.

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Controller classification Controllers are divided into combinational logic controllers and microprogrammable controllers, and the two kinds of controllers have their own strengths and weaknesses.

Combination logic controller design trouble, complex structure, once the design is completed, can not be modified or expanded, but it is fast.

Microprogrammed controller design is convenient, simple structure, modification or expansion are convenient, modify the function of a machine instruction, only need to reprogramme the corresponding microprogramme; to increase a machine instruction, only need to add a section of microprogramme in the control memory, but it is through the execution of a section of microprogramme.

Specific comparisons are as follows: combinational logic controllers, also known as hard-wired controllers, are composed of logic circuits and rely entirely on hardware to implement the function of the instruction.

Basic Functions Data buffer: Since the rate of I/O devices is low while the rate of CPU and memory is high, a buffer must be set up in the controller.

In the output, the buffer is used to store the data coming from the host at high speed, and then the data in the buffer will be transmitted to the I/O device at the rate of the I/O device; in the input, the buffer is used to store the data coming from the I/O device, and then the data in the buffer will be transmitted to the host at high speed after a batch of data has been received.

Error control: The device controller also manages error detection of data sent from I/O devices.

If an error is found in the transmission, the error detection code is usually set and reported to the CPU, which then cancels the transmitted data and transmits it again.

This ensures the correctness of the data input.

Data exchange: This refers to the realisation of data exchange between the CPU and the controller, and between the controller and the device.

For the former, it is through the data bus, by the CPU in parallel to write data into the controller, or from the controller in parallel to read out the data; for the latter, it is the device will be the data input to the controller, or from the controller to the device.

For this purpose, data registers shall be set up in the controller.

Status Description: Identifies and reports the status of the device The controller shall note down the status of the device for the CPU to know.

For example, the CPU can start the controller to read data from the device only when the device is in a transmit-ready state.

For this purpose, a status register shall be set up in the controller with each bit therein reflecting a particular state of the device.

When the CPU reads in the contents of this register, it can learn the state of the device.

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