Ethercat master station controller and communication method and system thereof

Abstract

The invention discloses an Ethercat master station controller and a communication method and system thereof. The master station Ethercat controller comprises a network adapter and a master control chip, wherein the network adapter is connected with the master control chip, the network adapter is used for receiving an Ethercat message returned from an Ethercat slave station device and sending the Ethercat message to the master control chip, or receiving a source TCP / IP message sent by a remote server, and sending the source TCP / IP message to the master control chip, and the master control chipis used for converting the Ethercat message into a target TCP / IP message and sending the target TCP / IP message to the remote server when determining that slave station data in the Ethercat message needs to be uploaded to the remote server, or converting a corresponding instruction into a target Ethercat message and sending the target Ethercat message to the Ethercat slave station device when the source TCP / IP message comprises an instruction controlling the Ethercat slave station device.

Description

technical field [0001] The embodiment of the present invention relates to the field of industrial control, in particular to an Ethernet control automation technology Ethercat master station controller and a communication method and system thereof. Background technique [0002] During the development of industrial control, the industrial control system is developing toward intelligence, networking and decentralization. At the same time, automation systems and field devices are required to be connected with multi-branch structure, two-way transmission and all-digital communication control network. Due to the use of traditional technology The shortcomings of the fieldbus itself cannot meet the performance requirements of the motion control system. And with the rapid development of network technology, today's industrial fieldbus technology is gradually transitioning to the stage of real-time industrial Ethernet. The industrial Ethernet bus has become an important development di...

AI Technical Summary

Problems solved by technology

The existing Ethercat master controller can meet the high-speed, real-time and safe data acquisition and control of Ethercat slave devices, but after receiving the Ethercat message sent by the Ethercat slave device, it is only processed in the local controller, which can The number of controlled Ethercat slave devices is limited, the control distance is limited, and more importantly, there is a lack of a control scheme for coordinated actions between Ethercat master controllers. By designing an Ethercat master with remote communication functions that supports the TCP / IP protocol The controller cooperates with the server cluster to coordinate data collection for a large number of Ethercat master controllers, and executes motion control and monitoring, which not only greatly simplifies the structure of the Ethercat master controller, but also ensures that Unified control of two Ethercat master controllers and Ethercat slave devices)

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