What bus control does Mitsubishi servo use?

Mitsubishi servo motors are a type of high-precision, high-performance motor commonly used in the field of industrial automation. They are widely used in robots, CNC machine tools, automated production lines, and other fields. In Mitsubishi servo systems, bus control is a very important communication method that can achieve coordinated control between multiple servo motors and improve the stability and reliability of the system. This article will introduce the bus control technology in Mitsubishi servo systems in detail, including bus types, communication protocols, control strategies, and other aspects.

1. Bus Type

In Mitsubishi servo systems, the commonly used bus types are as follows:

1.1 SERCOS (Serial Real-time Communication System)

SERCOS is a high-speed, real-time serial communication bus, mainly used for real-time control in the field of industrial automation. It has the characteristics of high transmission rate, low latency, high reliability, etc., and is suitable for the control of multi-axis servo systems.

1.2 PROFIBUS（Process Field Bus）

PROFIBUS is a fieldbus used in the field of industrial automation, with high-speed, real-time and reliable communication capabilities. It can support multiple communication protocols, such as PROFIBUS-DP, PROFIBUS-PA, etc., and is suitable for the control needs of various industrial sites.

1.3 EtherCAT (Ethernet for Control Automation Technology)

EtherCAT is a real-time industrial Ethernet communication protocol based on Ethernet, which has the characteristics of high transmission rate, low latency, high reliability, etc. It can support parallel communication of multiple servo motors and is suitable for large-scale, high-speed industrial automation systems.

1.4 CANopen (Controller Area Network open)

CANopen is an open communication protocol based on CAN bus, mainly used for control and monitoring in the field of industrial automation. It has the characteristics of high reliability, low latency, easy expansion, etc., and is suitable for the control needs of various industrial sites.

1. Communication Protocol

In Mitsubishi servo systems, bus communication protocols are the key to achieving coordinated control between multiple servo motors. Commonly used communication protocols are as follows:

2.1 SERCOS III

SERCOS III is a real-time Ethernet protocol based on optical fiber communication, which has the characteristics of high speed, low latency and high reliability. It can support the control of multi-axis servo systems and is suitable for high-precision and high-speed industrial automation applications.

2.2 PROFINET

PROFINET is an open communication protocol based on Ethernet, mainly used for control and monitoring in the field of industrial automation. It can support multiple communication methods, such as PROFINET IO, PROFINET CBA, etc., and is suitable for the control needs of various industrial sites.

2.3 EtherCAT

EtherCAT is a real-time industrial Ethernet communication protocol based on Ethernet, which has the characteristics of high transmission rate, low latency, high reliability, etc. It can support parallel communication of multiple servo motors and is suitable for large-scale, high-speed industrial automation systems.

2.4 CANopen

CANopen is an open communication protocol based on CAN bus, mainly used for control and monitoring in the field of industrial automation. It has the characteristics of high reliability, low latency, easy expansion, etc., and is suitable for the control needs of various industrial sites.

1. Control strategy

In Mitsubishi servo systems, bus control strategy is the key to achieving coordinated control between multiple servo motors. Commonly used control strategies are as follows:

3.1 Master-slave control

Master-slave control is a common bus control strategy, in which one servo motor acts as the master controller and the other servo motors act as slave controllers. The master controller is responsible for coordinating the movements of the slave controllers to achieve coordinated control of the multi-axis servo system.

3.2 Parallel Control

Parallel control is a control strategy based on high-speed buses such as EtherCAT, which can achieve parallel communication and control of multiple servo motors. In parallel control, each servo motor can receive control instructions independently to achieve high-speed and high-precision motion control.

3.3 Distributed Control

Distributed control is a network-based control strategy that can achieve distributed control of multiple servo motors. In distributed control, each servo motor can receive control instructions independently to achieve coordinated motion control.

3.4 Networked Control

Networked control is an Internet-based control strategy that enables remote control and monitoring. In networked control, each servo motor can receive control instructions through the Internet to achieve remote motion control.

1. Application Cases

4.1 Robot Control System

In the robot control system, multiple servo motors need to achieve high-precision and high-speed motion control. By adopting bus control technology, the coordinated control of multi-axis servo systems can be achieved to improve the robot's motion performance.

4.2 CNC Machine Tool Control System

In the control system of CNC machine tools, multiple servo motors are required to achieve high-precision and high-speed cutting motion. By adopting bus control technology, the coordinated control of multi-axis servo systems can be achieved to improve the processing accuracy and efficiency of CNC machine tools.

4.3 Automated production line control system

In the control system of an automated production line, multiple servo motors need to achieve high-speed, high-precision coordinated motion. By adopting bus control technology, coordinated control of multi-axis servo systems can be achieved to improve the operating efficiency and stability of the production line.

1. in conclusion

The bus control technology in Mitsubishi servo system is characterized by high speed, real-time and reliability, and can realize coordinated control among multiple servo motors.