What is Profibus technology, and how does it differ from previous technologies?
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What is Profibus technology, how does it differ from previous technologies, and in which projects is it used? ? ?
The last edit to this post was made by Desert Fish on 2021-11-6 at 13:25. In simple terms, rofibus uses a bus to connect various dispersed field devices (sensors and actuators) to controllers or control systems, and it supports factory automation, process automation, as well as drive applications. In simple terms, Profibus uses a bus to connect various distributed field devices (sensors and actuators) to controllers or control systems, while supporting factory automation, process automation, as well as drive applications.
Here is my personal understanding: it seems that this bus originates from a serial bus developed by Siemens, and it differs quite significantly from the current field buses. There are many applications in municipal environmental protection, but it seems to be used less in large petrochemical projects. I don’t know if it’s due to technical reasons or something else.
This post was last edited by Sai Xin on 2022-5-15 at 22:07. Bus technology is also used in other industries; it’s not something new. In the automotive industry, there’s the CANopen bus, and Germany’s Industry 4.0 initiative has introduced IO-link, which is also a type of bus. In our petrochemical industry, Siemens proposed Profibus, while Emerson developed Fieldbus. These are efforts to establish industry standards, with various companies competing with one another; to this day, no unified standard has been established. I once read a report from Wanhua, stating that Yantai Wanhua uses the Fieldbus protocol throughout its facility – all of the more than 10,000 measurement points in the plant are equipped with Fieldbus instruments
It’s all about money – there are over 10,000 measurement points in the entire plant, and all of those instruments use fieldbus technology
In fact, the general direction of the instrumentation is determined as early as when choosing which DCS to use in the factory; since Emerson’s DCS fieldbus protocol is used, 80% of the instruments used will be from Emerson； I’ve heard people from Yokogawa complain that while Yokogawa also has instruments with a Filedbus bus, they aren’t fully compatible with Emerson’s upper-level DCS in the same way as Emerson’s instruments. Of course, I think if it were Yokogawa’s DCS, it would also create obstacles for the settings of Romon’s systems. I’m not familiar with DCS; Siemens probably doesn’t have its own DCS. Profibus is likely used by companies in Europe. Regarding instruments, E+H probably stands for…
This post was last edited by qugd on 2022-5-16 08:46. The Siemens family has DCS systems, but traditionally many users do not view it that way. Given current technological developments and compatibility considerations, the boundary between DCS and PLCs has become blurred; however, in terms of system scale, DCS is used on a larger scale in the process industry. ProfiBus originated from Siemens, while most fieldbuses stem from ABB. In fact, the true FieldBus was developed by a Brazilian company named Smar; that was the original source of FieldBus. In China, the first company to use Smar and to promote its technology was Binhua in Shandong Province, and for this purpose Binhua has a separate company dedicated to promoting and providing services related to Smar.