Serial communication method of servo driver, and servo driver

Abstract

The invention belongs to the technical field of the industrial control, and specifically relates to a serial communication method of a servo driver, and the servo driver. The serial communication method comprises the following steps: each of master equipment and slave equipment reads to-be-sent data from the own sending buffer module, and saves the to-be-sent data to the own shifting register; themaster equipment sends a clock pulse signal to the slave equipment, and sends the data in the main shifting register to the slave shifting register of each set of slave equipment; after receiving theclock pulse signal, each set of slave equipment synchronously sends the data in the slave shifting register to the main shifting register; each of the master equipment and the slave equipment saves the data in the shifting register to the corresponding receiving buffering module; if a main receiving buffering module or the slave receiving buffering is already full, a zone bit is set so as to continuously transmit data after a processor reads the data; above steps are repeated to realize the serial transmission of the data between the master equipment and the slave equipment. An amount of thepin between the master equipment and the slave equipment can be saved through the scheme disclosed by the invention, the layout space of the PCB can be saved, and the hardware cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of industrial control, and in particular relates to a serial communication method of a servo driver and the servo driver. Background technique [0002] Servo drive, also known as servo controller, is a controller used to control servo motors. Its function is similar to that of frequency converters on ordinary AC motors. It is a part of the servo system and is mainly used in high-precision positioning systems. Servo drives generally control the servo motor through three methods of position, speed and torque to achieve high-precision positioning of the transmission system. It is currently a high-end product of transmission technology. Servo drives have become an important part of modern motion control and are widely used in automation equipment such as industrial robots and CNC machining centers. [0003] At present, mainstream servo drives generally have multiple cores, among which the control core usually a...

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Problems solved by technology

[0003] At present, mainstream servo drives generally have multiple cores, among which the control core usually adopts a digital signal processor (DSP), which can realize relatively complex control algorithms, realize digital, network and intelligent processing, and other programmable devices are used as auxiliary The function core, the control core and other auxiliary function cores need to transmit data through communication. At present, the commonly used communication method is parallel communication. Since it transmits data through parallel transmission of multiple data bits at the same time, it can be increased by adding The number of bits of data transmitted at the same time is used to improve the transmission bandwidth, but in the design of the servo driver, when the number of data bits to be transmitted increases continuously, it leads to an increase in the number of chip pins that need to be occupied, not only the PCB layout design is complicated. increase and also lead to an increase in cost

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