8 results about "Ethernet protocol" patented technology

A gateway (2) for a fieldbus system (100), wherein the gateway (2) comprises a first processor (6) with a first operating system (62), a second processor (7) with a second operating system (72) which is different from the first operating system (62) and has a virtual Ethernet interface (73), and an inter-processor communication interface (9) which is designed to enable an Ethernet protocol-based inter-process communication between the first operating system (62) and the second operating system (72) using the virtual Ethernet interface (73).

The application provides a terminal Ethernet scheduling method, system, storage medium and computer, the method comprises the following steps: when a message sending task is acquired, packet data in the message sending task is encapsulated to obtain an encapsulated packet; the encapsulated packet is sent to a buffer queue, and the encapsulated packet in the buffer queue is sent according to its priority based on a trigger signal of a switch; when a message event is received, a current operation mode is judged; if the current operation mode is an interrupt receiving mode, packet data corresponding to the message event is broadcast to all listening tasks through a message mailbox, and the listening tasks are processed according to their priority order. The application mainly improves the sending message queue management and data storage management, and provides two Ethernet packet receiving mode selections, so that the delay caused by repeated data copying in the traditional Ethernet protocol stack layer processing is avoided.

The application discloses a lossless Ethernet simulation model, containing a terminal simulation model, the terminal simulation model including a port binding control model, a terminal switching model, an RDMA model, an Ethernet protocol model and an APP application model; the port binding control model is used for controlling an Ethernet interface and transmitting and receiving each frame; the terminal switching model is used for supporting two-layer switching of Ethernet data frames and RDMA data frames and supporting PFC flow control; the RDMA model is used for realizing RDMA RoCEv2 protocol transmission and reception of RDMA messages and ECN congestion notification functions; the Ethernet protocol model is used for realizing TCP / IP, UDP protocol and ECN congestion notification functions of Ethernet messages; and the APP application model is used for generating RDMA messages and Ethernet messages according to content of a configuration file and defining priorities of each message. The application provides a reliable tool for design and optimization of a lossless network.

This invention discloses a control method and system for a distributed motion controller, relating to the field of motor control technology. The method includes: acquiring operational data from the motion controllers of each production line via real-time Ethernet and processing the acquired data; performing fuzzy inference based on the underlying single-axis servo fuzzy controller of the motion controller to obtain position feedforward compensation time and distributed clock phase adjustment; performing fuzzy inference based on the upper-level production line collaborative fuzzy scheduler of the main controller to obtain speed multipliers and global command timestamp offsets; generating motor control commands conforming to the real-time Ethernet protocol; and using a distributed clock synchronization mechanism to synchronously adjust the operating parameters of the servo motors of each production line. By real-time monitoring and scheduling of the motion controllers of multiple production lines, multiple production lines can cooperate with each other, achieving intelligent dynamic adjustment of the production line system, thereby improving the processing efficiency of the production line system.

This application relates to Ethernet terminals or Ethernet forwarding devices that handle unknown unicast flooding, belonging to the field of Ethernet data forwarding control. Upon receiving an unknown unicast, the control component of the Ethernet terminal or Ethernet forwarding device sends a probe message targeting the unknown unicast destination address using the interaction rules of the general Ethernet protocol. This induces a response from the terminal with the unknown unicast destination MAC address. The response message then prompts the Ethernet forwarding device through which it passes to generate a correct MAC forwarding table entry for the unknown unicast destination MAC address. This prevents the Ethernet forwarding device from flooding the unknown unicast when the destination MAC address is being unicasted, thus preventing network congestion and congestion processing by connected Ethernet terminals and Ethernet forwarding devices.

The present application relates to a kind of network connection diagnostic method, control node and storage medium, control node is any node in Ethernet, data transmission between each control node in Ethernet is based on preset Ethernet protocol, method includes: in the case where receiving the first message carrying the first message flag information sent by other control node in Ethernet, determine the message information of first message;Other control node is the control node with control node there is unicast or multicast relationship;Determine the node diagnostic data corresponding to control node based on message information, and send node diagnostic data to the main control node in Ethernet, for the main control node based on node diagnostic data determines the network connection diagnostic result of Ethernet.The present application diagnoses the network connection between each control node in each control node of Ethernet by message receiving condition, to obtain the network connection diagnostic result of Ethernet, improves the efficiency of network connection diagnosis.

The application discloses an access device, and relates to the technical field of communication. The device is used for accessing a FF instrument to a high-order Ethernet system on a field side, and comprises the following: a physical layer TRUNK interface connected to an APL power switch, which is used for supplying power to the access device and accessing the access device to the high-order Ethernet system on the field side; a micro control unit used for realizing conversion and processing of high-order Ethernet protocol data and foundation fieldbus data; an FF interface circuit used for encoding or decoding the foundation fieldbus data; an FF power regulator circuit used for acquiring power of the APL power switch through the physical layer TRUNK interface, modulating the power into power meeting a foundation fieldbus standard, and supplying power to an FF network segment protection circuit; and the FF network segment protection circuit used for being connected to the FF instrument. The application realizes access of the FF instrument to the high-order Ethernet system, that is, access to an advanced physical layer of Ethernet, and solves the problem of ecological loss of the advanced physical layer of Ethernet.