Foundation fieldbus (FF,Foundation Fieldbus) is the most promising, one of the most competitive field bus. Led by the Fisher-Rosemount company, ISP organization composed of 80 companies and jointly led by Honeywell Corporation, joint WorldFIP North America comprising 150 companies in Europe, the two groups merged in 1994, established the Fieldbus Foundation, is committed to developing … Continue reading Foundation fieldbus (FF,Foundation Fieldbus)
LonWorks field bus
LonWorks is by United States Echelon launched by its advocates together with Motorola, Toshiba, formed in 1990 and officially announced. Using all 7 of the ISO/OSI model layer communications protocol, using object-oriented design methods, designed to simplify network communication over the network variable to parameter settings, the communication rate ranged from 300bps to l.5Mbps, direct … Continue reading LonWorks field bus
PROFIBUS fieldbus
PROFIBUS is the abbreviation of Process Field Bus, 1989 by Siemens-led 13 companies and 5 research institutions in the standardization norms established in a joint development project. 1996 PROFIBUS as Germany national standard DIN19245, is also a European standard EN50170. PROFIBUS achievement in practical applications, in many bus top, widely used in a variety of … Continue reading PROFIBUS fieldbus
CAN be the abbreviation for controller area network
CAN be controller area network (Controller Area NetWork) for short. It is Germany developed by Bosch company and several other semiconductor manufacturers, was initially designed specifically for the automotive industry, the workload of aimed to save on wiring, because of its features were later widely used in all walks of life. Its chip production by … Continue reading CAN be the abbreviation for controller area network
Structure and application of CC-link fieldbus
Integration of fieldbus control and information processing CC-Link (Control and Communication Link) is a province of wiring and information networks, it is not only highly real-time, distributed control, with smart device communications, RAS features, and rely on strong links with many equipment manufacturers, provide an open environment. Q Series PLC modules CC-Link QJ61BTll, in the … Continue reading Structure and application of CC-link fieldbus
Multi-point interface (MPI) and global data sets
, multi-point interface (MPI)S7-300/S7-400 network PLC via MPI interface, MPI network using global data (Globe Data) communication patterns can be for small amounts of data exchange between PLC. It does not require additional hardware and software, low cost and usage reduction.MPI network is used to connect multiple CPU or device. MPI for RS-485, a multicast … Continue reading Multi-point interface (MPI) and global data sets
PROFIBUS Protocol and network
1, PROFIBUS Protocol has three main parts:PROFIBUS DP (Distributed I/Os): between the master and the slave uses round-robin method of communication, mainly used in manufacturing unit-level and field-level communication in automation systems.PROFIBUS PA (Process Automation): power transmission and communications data across the bus, mainly used in process automation system oriented unit-level and field-level communications.PROFIBUS FMS … Continue reading PROFIBUS Protocol and network
S7-300 PROFIBUS DP system configuration
PROFIBUS DP system configuration can be classified as DP master station system, CP Communications template main station system and intelligent slave DP systems. Three take DP master station system in the DP, CP Communications template main station system is basically the same hardware configuration.1. the PROFIBUS DP systems: master/slave with DP systemsTake DP master/slave system … Continue reading S7-300 PROFIBUS DP system configuration
S7-300 industrial Ethernet
Communications processors are used for SIMATIC CP 343-1 S7-300 communications processor. Shared CPU communications tasks and allows other connections.S7-300 by CP 343-1 and programmer, computer, human interface device, other SIMATICS7 system and the SIMATIC S5 programmable controller to communicate:CP 343-1 communication processors installing in S7-300 DIN standard rail, can also be installed on the extension … Continue reading S7-300 industrial Ethernet
Mitsubishi FX series PLC programming of work process
Most PLC using batch input/output cycle work scan, running as user programs one by one in the order. A complete cycle can be divided into three stages:(A) enter the refresh phasePrograms at the start of monitoring program the machine to scan input each signal on all input ports, and in turn into the corresponding input … Continue reading Mitsubishi FX series PLC programming of work process
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