China
Africa
Explore chapters and articles related to this topic
Profinet
Published in Richard Zurawski, Industrial Communication Technology Handbook, 2017
PROFINET is the open standard for Industrial Ethernet of PROFIBUS & PROFINET International (PI) that covers all automation technology requirements [1]. With PROFINET, real-time (RT) capable solutions can be implemented for discrete manufacturing and continuous process automation, safety applications, and the entire range of drive technology up to and including isochronous motion control applications.
Profinet IRT
Published in Sunit Kumar Sen, Fieldbus and Networking in Process Automation, 2014
PROFINET (PROcess FIeld NETwork) is an open standard in industrial Ethernet and finds widespread applications in areas like process automation, production automation, automotive, machine industries, and drive control. PROFINET is standardized in IEC 61158 and IEC 61784. The safety aspect of the devices are covered under IEC 62061/ISO 13849-1.
Control and Protection Strategy of Toroidal Field Magnet Power Supply System in HL-2M
Published in Fusion Science and Technology, 2023
Weibin Li, Yali Wang, Xue Zheng, Yuhong Chen, Yi Wu, Yinqiao Wang, Huajun Li
Before the power supply works, the TF power supply protection system sets each protection threshold. During the operation of the power supply, if a fault is detected, the protective action will be executed according to the protection strategy. If several faults with different fault levels occur at the same time, the protection strategy shall be implemented according to the fault with the highest priority. If several faults of the same level occur at the same time, each protection system implements its own protection strategy. At the same time, the fault message of the TF power supply system will be sent to the central control system. Both PROFINET and PtP (point to point) were used to transmit the key fault signals to improve the reliability of the TF power supply system. In there, PROFINET is a new generation of automation bus standards based on industrial Ethernet technology, which is launched by PROFIBUS International. PtP means point to point direct cable connection.
Integration of heterogeneous system information in machining-detection logistics for titanium alloy blade with adaptive belt grinding
Published in International Journal of Computer Integrated Manufacturing, 2019
Guijian Xiao, Yi He, Yun Huang, Ying Liu, Wentao Dai, Li Quan
The field equipment integration data need to be collected and processed. During data acquisition, the signal used in the 840D CNC abrasive belt grinding machine to interact with the superstratum application is fixed in the DB data centralised management to the NCU PLC block; hence, it enables the upper application to quickly realise interactions with the SINUMERIK 840D NC system data while facilitating centralised management control using the S7-1200 PLC (CPU model for 1211 c) for data collection. The CPU built-in ProfiNet port in the S7-1200 PLC can communicate with other systems or the CPU with the aid of the ProfiNet network. ProfiNet is fully compatible with the industrial Ethernet and existing PROFIBUS buses and also supports Ethernet and TCP/IP-based protocols. Therefore, during communication, S7, ISO-on-TCP, or TCP can be selected according to varying situations. Compared to the S7-200 PLC, 300, 400 PLC, and 1200 PLC, it is more compact and can support additional points and more comprehensive functions. It inherits the S7-300/400 PLC array structure support and adopts the OB block, FC function, and DB data block and is more conducive to automatic implementation of the control object.
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).