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The Organic Combination of Industrial Ethernet and Fieldbus

The introduction of Ethernet will provide the possibility for the subsequent development of the control system. Users do not need to invest in the technical upgrading alone. For this, any existing field bus technology is incomparable. At the same time, the development of robot technology and intelligent technology requires that communication networks have higher bandwidth and performance control engineering network copyright, and communication protocols have higher flexibility. Ethernet can meet these requirements well. Although industrial Ethernet has

Analysis and Thinking on the Standardization Process of Fieldbus Technology

By analyzing the needs of users, we can roughly divide the technical requirements and expectations of users on the field bus into the following three levels: 1) interconnection between intelligent components and controllers (stations), mainly to replace traditional I/O cables. It is required to transmit traditional I/O data, and additionally transmit some alarm and fault diagnosis information unique to intelligent components. 2) On the basis of transmitting the above real-time monitoring data, the user further requires to centralize through the network

Historical Footprint of Fieldbus Technology Development

Fieldbus is developed internationally in the late 1980s and early 1990s. The field intelligent equipment interconnection communication network CONTROL ENGINEERING China, which is used in process automation, manufacturing automation, building automation and other fields, has all rights reserved. It has attracted worldwide attention and has become a hotspot in the development of automation technology, and will lead to profound changes in automation system structure and equipment. Many powerful and influential companies in the world have made progress in varying degrees

Basis and standard of wireless network security

With the improvement of wireless security technology, this technology has become the cornerstone of data communication and an integral part of daily life in recent years. It is predicted that most people will soon use their mobile smartphones as their important computer tools. Wireless has become the choice of communication for many people. However, without effective data security, wireless technology will not develop

How HART works

"HART" is an abbreviation for High Speed Addressable Remote Sensor. The HART protocol uses the Bell 202 Frequency Shift Keying (FSK) standard to superimpose low-level digital communication signals on 4 - 20mA. This technology realizes two-way field communication and makes it possible to transmit more information than general process variables with intelligent field instruments. The HART protocol communicates at a rate of 1200 bps without affecting the 4 - 20mA signal.