I. Advantages of Industrial Ethernet as a Fieldbus
Industrial Ethernet is a powerful area and cell network based on IEEE 802.3 (Ethernet). It's an Ethernet technology used in industrial control, technically compatible with commercial Ethernet (i.e., the IEEE 802.3 standard), but actual products and applications are completely different. This is mainly because the product design of ordinary commercial Ethernet cannot meet the needs of industrial sites in terms of material selection, product strength, applicability, real-time performance, interoperability, reliability, interference immunity, and intrinsic safety. Therefore, industrial Ethernet, which differs from commercial Ethernet, is used in industrial field control applications.
Industrial Ethernet, as a fieldbus, has the following advantages:
1. High performance: Industrial Ethernet supports high-speed data transmission and real-time communication, with higher transmission rates and throughput than traditional buses, making it suitable for industrial automation applications that require high-speed data transmission and real-time control.
2. Flexibility: Industrial Ethernet supports distributed control and can customize the number of nodes and topology according to different application requirements, allowing for flexible expansion and modification of the network topology.
3. Reliability: Industrial Ethernet employs advanced transmission protocols, error checking, and error correction technologies to ensure the reliability and accuracy of data transmission.
4. Easy to maintain: Industrial Ethernet is relatively simple to set up and maintain. It can be managed using common network devices and tools, reducing costs and maintenance difficulty.
5. High efficiency: Industrial Ethernet can handle multiple tasks in parallel, improving the efficiency of the entire system, and has been widely used in many disciplines.
II. Differences between Industrial Ethernet and Regular Ethernet
Industrial Ethernet technology boasts advantages such as low cost, stability and reliability, high communication speed, abundant hardware and software products, wide application, and mature supporting technologies, making it one of the most popular communication networks. Industrial Ethernet differs from ordinary Ethernet in the following ways:
1. Real-time performance and reliability: Industrial Ethernet needs to meet the requirements of real-time communication and high reliability between devices, while ordinary Ethernet does not.
2. Network topology: Industrial Ethernet uses a ring topology to improve the reliability of signal transmission, while ordinary Ethernet uses a star topology.
3. Network communication protocols: Industrial Ethernet uses dedicated industrial Ethernet protocols (such as Modbus/TCP, EtherNet/IP, etc.), while ordinary Ethernet uses the TCP/IP protocol.
4. Communication distance: Industrial Ethernet supports longer communication distances, up to 100 meters or more, while ordinary Ethernet is usually no more than 100 meters.
5. Environmental adaptability: Industrial Ethernet can adapt to harsh conditions in industrial environments such as high temperature, low temperature, humidity, and dust, while ordinary Ethernet cannot.
In summary, Industrial Ethernet is a special type of Ethernet designed for the industrial control field, providing higher real-time performance, reliability, and adaptability to meet the requirements of industrial control.
III. Requirements for Industrial Ethernet Usage
It has the following usage requirements:
1. Powerful transmission performance: Industrial Ethernet needs to provide high-speed, reliable, low-latency, and high-bandwidth transmission performance to meet the requirements of real-time control and data transmission.
2. Security and Reliability: In industrial applications, network security is of paramount importance. Multiple security measures must be taken to ensure the reliability and security of data transmission, such as data encryption, user authentication, and access control.
3. Short latency: In industrial settings, the operating status of equipment is reflected in the control system in real time. Therefore, it is essential to ensure that the data transmission latency is very short in order to support real-time data exchange.
4. Interoperability: Industrial Ethernet must support communication between different types of devices and needs to be interoperable with other industrial network protocols in order to achieve seamless connectivity and data transmission between various devices.
5. Ease of maintenance: Industrial Ethernet devices are typically distributed in the field and remote locations, so they need to provide easy maintenance and monitoring capabilities to properly diagnose and repair faults.
In conclusion, the use of industrial Ethernet also requires good flexibility, scalability, and reliability to adapt to changes in the industrial environment and the needs of continuous development.
