RS485 and MODBUS communication are commonly used concepts in industrial control systems, but they are different. Below is a brief introduction. RS485 is a physical interface, simply put, it is hardware. MODBUS is an internationally standardized communication protocol used for device data exchange between different manufacturers (generally for industrial purposes); in industrial environments, data is … Read more
With the implementation of the “Industry 4.0” strategy, the development of computer technology, communication technology, and IT technology has infiltrated the industrial control field. The most significant manifestation of this is the technology of industrial fieldbus and industrial Ethernet. The widespread use of industrial fieldbus technology, especially Ethernet technology, has brought profound changes to automation … Read more
As a seasoned electrical engineer, one should be well-versed in various bus systems. Today, I have compiled relevant materials for everyone! 1. Overview 1. Introduction to IEC61158 IEC61158 is the fieldbus standard from the International Electrotechnical Commission (IEC). Currently, the IEC61158 fieldbus standard has developed a series of standards, with the latest version being IEC61158-6-20 … Read more
1. Foundation Fieldbus (FF) This was established in September 1994 by the collaboration of American Fisher-Rousemount, Yokogawa, ABB, Siemens, Invensys, and over 80 other companies to create the ISP protocol, along with Honeywell and over 150 companies in Europe to create the WorldFIP protocol. This bus has been widely used in the field of process … Read more
In the development of industry, fieldbus plays a very important role, mainly applied in fields such as petroleum, chemical, electric power, medicine, metallurgy, manufacturing, transportation, national defense, aerospace, agriculture, and buildings. Today, I will introduce several types of fieldbus such as the Modbus communication protocol, PROFIBUS, FF, and CAN bus. Origin and Development of Modbus … Read more
PROFIBUS is an international, open, and device-independent fieldbus standard. The transmission speed of PROFIBUS can be selected within the range of 9.6kbaud to 12Mbaud, and when the bus system starts, all devices connected to the bus should be set to the same speed. It is widely used in manufacturing automation, process automation, and other fields … Read more
PROFIBUS is defined by the German national standard DIN19245 and the European standard EN50170. In the industrial field, PROFIBUS has become a universal, open, and distinctly communicative fieldbus standard. PROFIBUS is a fieldbus technology used for data communication and control at the workshop level for factory automation, enabling a communication network from the field device … Read more
A customer of Siemens 840DSL processes impeller products, with loading and unloading performed by a third-party robot. Quality inspection personnel found through multiple random checks that: for every 500 products processed, about 10 products have the following quality issue: there is a noticeable knife mark on the back of the blades. When operators performed manual … Read more
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1. What are the differences between PROFIBUS and PROFINET? Do they have independent interfaces? PROFIBUS is a fieldbus based on a communication system. PROFINET is an Ethernet-based communication system that provides a simpler way to integrate automatic control systems into large corporate IT systems, such as MES (Manufacturing Execution System) or ERP (Enterprise Resource Planning). … Read more