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PLC cabling, data transmission, and networking
Published in Raymond F. Gardner, Introduction to Plant Automation and Controls, 2020
Profibus gets its name from Process Field Bus. Fieldbus is an industrial network system for realtime distributed control, used in a variety of network topologies including daisy-chain, star, ring, and others, of which Profibus is one “type.” Profibus is an open-source communication protocol that was developed in Germany and is used by Siemens for their fieldbus- networking technology used with their equipment and devices. Profibus is used in process automation as a smart technology, where devices are connected on a common bus/cable. The devices communicate information in an efficient manner, provide automation messages, and perform self-diagnosis of the device and connection.
Profibus
Published in Richard Zurawski, Industrial Communication Technology Handbook, 2017
Ulrich Jecht, Wolfgang Stripf, Peter Wenzel
PROFIBUS is an open, digital communication system with a wide range of applications, particularly in the fields of factory and process automation, transportation, and power distribution. PROFIBUS is suitable for both fast, time-critical applications and complex communication tasks (Figure 11.1).
Hybrid Wired/Wireless Real-Time Industrial Networks
Published in Richard Zurawski, Networked Embedded Systems, 2017
Gianluca Cena, Adriano Valenzano, Stefano Vitturi
Profibus and Profinet are industrial networks supported by the PROFIBUS & PROFINET International (PI) global organization. Each one of them includes several communication profiles (CPs) specifically tailored to different application scenarios.
Communication method for manufacturing services in a cyber–physical manufacturing cloud
Published in International Journal of Computer Integrated Manufacturing, 2018
S. M. Nahian Al Sunny, Xiaoqing F. Liu, Md Rakib Shahriar
Interoperability and automation of machine tools have always been a big concern for manufacturers. In the early twentieth centuries, the mechanical technology and analog devices were the primary components of the process control systems and manufacturing systems. In 1970s, Programmable Logic Controller (PLC) with limited control functions was introduced which replaced the conventional relay based control systems (Erickson 1996). With the development of digital computers, the scenario changed radically. Numerically Controlled (NC) machines came into play and labyrinths of mechanical linkages were substituted by point-to-point wiring. But this created a new difficulty. Optimised communication networking among different machines in the factory floor became a necessity. In 1985, Fieldbus systems emerged to reduce the complexity of conventional point-to-point wiring systems by connecting digital and analog devices to central controllers (Thomesse 2005; Zurawski 2014). Because of being an open protocol, many Fieldbus systems were developed in parallel and today there exist a number of variations. Over the past two decades, Fieldbus systems have gone through a lot of modifications and become standardised, although not unified. PROFIBUS is considered to be the most successful fieldbus technology and is widely used in industrial automation systems including factory and process automation. As of 9 September 2016, PROFIBUS & PROFINET International (PI) group indicates on its website that PROFINET offers digital communication for data processing and transmission with speeds up to 12 Mbps and supports up to 126 addresses. Control Area Network (CAN) bus is a high-integrity serial bus system which was fundamentally designed to be an automotive vehicle bus (Tindell, Hansson, and Wellings 1994). CANopen and DeviceNet are higher level protocols standardised on top of CAN bus to allow interoperability with devices on the same industrial network (McFarlane 1997). Modbus is a simple, robust and openly published, royalty free serial bus protocol that connects up to 247 nodes (Modbus Organization 2006). Modbus is easy to implement and operate on RS-232 or RS-485 physical links with speeds up to 115K baud. CC-Link was originally developed by Mitsubishi and is a popular open-architecture, industrial network protocol in Japan and Asia (Wikipedia 2014).