Controller refers to a master device that controls the start, speed regulation, braking and reverse of a motor by changing the connection of the main circuit or control circuit and changing the resistance value in the circuit in a predetermined order.

Liugong excavator accessories are composed of program counter, instruction register, instruction decoder, timing generator and operation controller. It is the "decision-making body" issuing commands, that is, coordinating and directing the operation of the whole computer system.

The controller is composed of logic controller and microprogram controller. The combinational logic controller is troublesome in design and complex in structure. Once the design is completed, it cannot be modified or expanded, but it is fast.

The microprogram controller is convenient in design, simple in structure, and easy to modify or expand. To modify the function of a machine instruction, it only needs to reprogram the corresponding microprogram. To add a machine instruction, you simply add 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 hardwired controller, is composed of logic circuits and completely relies on hardware to realize the function of instructions.

Use model：936D