Fieldbus, Ethernet, and wireless technologies have their own advantages and disadvantages, so who will be the mainstream of the future? Obviously not all technologies or "machines" are the "right" solution for all manufacturers or machines? Manufacturers must weigh the value of each type of program. Is there another profit that is more valuable than the benefits of using a common solution? If so, how do these solutions compare to the cost of maintaining another plant layer technology and corresponding supplier relationship in a few years? This is a critical issue and only the end user can answer. Again, these issues apply to fieldbus and Ethernet technologies, and even to future wireless network solutions.
Industrial Ethernet, fieldbus, and industrial wireless are the three mainstream technologies in the field of industrial communications. The integration of fieldbus, Ethernet, embedded technology and wireless communication technology into the control network enhances the system's stability and interoperability while ensuring system stability, thus helping enterprises to accelerate new product development and reduce Production costs, improve information services. As human demand for communication grows, networks become an essential means of transmission. With the increase of network applications, there will be more and more disputes about who will become the main means of industrial communication in the future. So who will become the mainstream of the future?
The concept of fieldbus was formally proposed in 1984. The appearance of the field bus not only simplifies the structure of the system, but also greatly simplifies the design, installation, commissioning, maintenance and maintenance of the entire control system. Therefore, the emergence of fieldbus technology has indeed brought a deep revolution to industrial automation. It has been rapidly developed in the field of industrial control for more than a decade and has been widely used in industrial automation systems. But fieldbus technology has not yet had a unified standard. In fact, starting from the concept of fieldbus, the International Electrotechnical Commission/International Standards Institute (IEC/ISA) began to develop standards for fieldbus, and the unified standards have not yet been completed. Many companies have also introduced their own fieldbus technology, but the openness and interoperability of each other is difficult to unify.
Just as the fieldbus standard wars are getting thicker, Ethernet has quietly entered the control field, resulting in a new term "Industrial Ethernet", and because of the advantages of faster Ethernet transmission rate than fieldbus, Ethernet technology Born on the brink of prosperity, in recent years its momentum has overshadowed the fieldbus. However, just like the standard battle of fieldbus in the past, Industrial Ethernet also has a variety of different Ethernet technologies, such as Ethernet/IP, Profinet, ModbusTCP, EtherCAT, Powerlink, etc., and these networks are different at different levels. The technologies and protocols, including OPC, CP, IP, etc., are supported by different vendors behind each technology, which determines the coexistence of multiple Ethernet technologies.
Let's talk about wireless technology, from complex wiring to today's only one wireless signal transmitter, from relying on PCs to any device with wireless terminal adapters, the connection network is presented at any time, any region, any device The status quo is unimpeded. The development of technology has also promoted the progress of society. Whether it is military products, industrial products or even civilian products, wireless technology has become an indispensable part of social development. Compared with the wired network, the wireless network has mobility, and there is no limitation of the communication cable. The communication terminal can be freely moved or randomly arranged in the communication area; the networking is fast and flexible, and the wireless communication system is installed to avoid the cable trench when the wired network is installed. The cumbersome work of laying cables reduces the construction amount; the coverage area is wide, the wireless communication can reach the area that can be reached by wired communication, and the data communication can be realized in the place where the wired network is inconvenient; the expansion capability is strong, and various topologies can be formed. It is very easy to extend the node. Of course, at this stage, people still have doubts and wait-and-see attitudes about the security, reliability, and cost-effectiveness of wireless technology, and they don't know much about the industrial applications that wireless technology is suitable for.
Fieldbus, Ethernet, and wireless technologies have their own advantages and disadvantages, so who will be the mainstream of the future? Obviously not all technologies or "machines" are the "right" solution for all manufacturers or machines? Manufacturers must weigh the value of each type of program. Is there another profit that is more valuable than the benefits of using a common solution? If so, how do these solutions compare to the cost of maintaining another plant layer technology and corresponding supplier relationship in a few years? This is a critical issue and only the end user can answer. Again, these issues apply to fieldbus and Ethernet technologies, and even to future wireless network solutions.
It can be said that no matter which kind of technology is developed, it is ultimately determined by its own characteristics, and the user will give the final answer. Regardless of Ethernet, fieldbus, and wireless technology, who is the mainstream of the future, how to make industrial control systems more open and compatible is the ultimate trend.
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