With the rapid development of Internet technology, industrial Ethernet is also showing its skills in the field of industrial communication. As an important communication device, industrial Ethernet switches have extremely important functions in the entire industrial communication industry! Next, the editor of Feichang Technology will give you a detailed introduction of what is an industrial Ethernet switch and its main functions, let's take a look!
Introduction to the concept of
industrial Ethernet switch Industrial Ethernet switch is a machine at the data link layer, a switch based on Ethernet to transmit data, using a physical address (MAC address), 48 bits, 6 bytes. Its working principle is: when a broadcast frame is received, it will forward to all ports except the receiving port. When receiving a unicast frame, check its destination address and correspond to its own MAC address table, if there is a destination address, then forward, if not, then flood, if there is no host MAC address and destination MAC address of the frame after broadcasting If they are the same, they will be discarded. If there are the same hosts, the MAC of the host will be automatically added to its MAC address table.
The industrial Ethernet switch divides the collision domain, and each port becomes a collision domain independently. If each port has a large amount of data to be sent, the port will first store the received data waiting to be sent in the register, and then send it out when it is the turn to send. Ethernet switches are widely used, and they can be seen in large and small local area networks. Industrial-grade Ethernet switches have stable performance, complete grades, price advantages, and the most common applications. In addition, the port rate of the Ethernet switch can be different, and the working mode can also be different. For example, it can provide bandwidth of 10M, 100M, 1000M, and provide half-duplex, full-duplex, and self-adaptive working methods.
The main function of the industrial Ethernet switch
1. Learning: The Ethernet switch understands the MAC address of the device connected to each port, and maps the address to the corresponding port and stores it in the MAC address table in the switch cache.
2. Forwarding/Filtering: When the destination address of a data frame is mapped in the MAC address table, it is forwarded to the port connected to the destination node instead of all ports.
3. Elimination of loops: When the switch includes a redundant loop, the Ethernet switch avoids loops through the Spanning Tree Protocol and allows the existence of backup paths.
Industrial Ethernet switches are Ethernet switch equipment used in the field of industrial control. Nowadays, Ethernet has become the main communication standard in the field of industrial control. Industrial Ethernet switches have a wide range of applications, and have certain applications in road traffic control automation, building automatic control systems, oilfield control automation and other fields.
Industrial-grade Ethernet switches generally meet the design requirements of industrial-grade designs: industrial wide-temperature design, 4-level electromagnetic compatibility design, redundant AC and DC power input, and PCB boards are generally treated with "three-proof".
The environment of the industrial site is worse than the ordinary environment, at least in terms of vibration, humidity, and temperature. The ordinary switch is not designed to withstand the various situations that occur in the industrial environment, and the ordinary switch cannot be long. Working in such a harsh environment often leads to failures and increases maintenance costs. It is generally not recommended to use commercial switches in an industrial environment. In order to enable the switches to be used in such harsh environments, the production can adapt to this The reliability of environmental switches and industrial-grade switches includes power failure, port interruption, relay output alarm, redundant dual DC power input, active circuit protection, and automatic circuit breaker protection for overvoltage and undervoltage.
Well, the above content is the introduction of Feichang Technology on industrial Ethernet switches, I hope it can be helpful to everyone! For more product-level specifications and product knowledge, you can consult in the product center or contact customer service staff! Feichang Technology, a professional manufacturer of optical transceivers, optical fiber transceivers, industrial switches, and protocol converters, independently researches and develops brands, welcome to come to understand and communicate.