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Programmable Logic Controllers
A programmable logic controller (PLC) or programmable controller is an industrial computer that has been ruggedized and adapted for the control of manufacturing processes, such as assembly lines, machines, robotic devices, or any activity that requires high reliability, ease of programming, and process fault diagnosis. PLCs can range from small modular devices with tens of Input/output, inputs and outputs (I/O), in a housing integral with the processor, to large rack-mounted modular devices with thousands of I/O, and which are often networked to other PLC and SCADA systems. They can be designed for many arrangements of digital and analog I/O, extended temperature ranges, immunity to electrical noise, and resistance to vibration and impact. PLCs were first developed in the automobile manufacturing industry to provide flexible, rugged and easily programmable controllers to replace hard-wired relay logic systems. Dick Morley, who invented the first PLC, the Modicon 084, for Gene ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Automate Industriel WAGO Pour Un Système De Monitoring En Industrie Pharmaceutique
Automation describes a wide range of technologies that reduce human intervention in processes, mainly by predetermining decision criteria, subprocess relationships, and related actions, as well as embodying those predeterminations in machines. Automation has been achieved by various means including Mechanical system, mechanical, hydraulic, pneumatic, electrical, electronic devices, and computers, usually in combination. Complicated systems, such as modern Factory, factories, airplanes, and ships typically use combinations of all of these techniques. The benefit of automation includes labor savings, reducing waste, savings in electricity costs, savings in material costs, and improvements to quality, accuracy, and precision. Automation includes the use of various equipment and control systems such as machinery, processes in factories, boilers, and heat-treating ovens, switching on telephone networks, steering, Stabilizer (ship), stabilization of ships, aircraft and other applic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
General-purpose Programming Language
In computer software, a general-purpose programming language (GPL) is a programming language for building software in a wide variety of application Domain (software engineering), domains. Conversely, a Domain-specific language, domain-specific programming language (DSL) is used within a specific area. For example, Python (programming language), Python is a GPL, while SQL is a DSL for Query language, querying relational databases. History Early programming languages were designed for scientific computing (numerical calculations) or commercial data processing, as was computer hardware. Scientific languages such as Fortran and ALGOL, Algol supported floating-point calculations and multidimensional arrays, while business languages such as COBOL supported fixed-field file formats and record (computer science), data records. Much less widely used were specialized languages such as IPL-V and LISP for List (abstract data type), symbolic list processing; COMIT for string manipulation; APT ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Function Block Diagram
The function block diagram (FBD) is a graphical language for programmable logic controller design, that can describe the function between input variables and output variables. A function is described as a set of elementary blocks. Input and output variables are connected to blocks by connection lines. Design Inputs and outputs of the blocks are wired together with connection lines or links. Single lines may be used to connect two logical points of the diagram: * An input variable and an input of a block * An output of a block and an input of another block * An output of a block and an output variable The connection is oriented, meaning that the line carries associated data from the left end to the right end. The left and right ends of the connection line must be of the same type. Multiple right connection, also called divergence, can be used to broadcast information from its left end to each of its right ends. All ends of the connection must be of the same type. Language ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boolean Algebra
In mathematics and mathematical logic, Boolean algebra is a branch of algebra. It differs from elementary algebra in two ways. First, the values of the variable (mathematics), variables are the truth values ''true'' and ''false'', usually denoted by 1 and 0, whereas in elementary algebra the values of the variables are numbers. Second, Boolean algebra uses logical operators such as Logical conjunction, conjunction (''and'') denoted as , disjunction (''or'') denoted as , and negation (''not'') denoted as . Elementary algebra, on the other hand, uses arithmetic operators such as addition, multiplication, subtraction, and division. Boolean algebra is therefore a formal way of describing logical operations in the same way that elementary algebra describes numerical operations. Boolean algebra was introduced by George Boole in his first book ''The Mathematical Analysis of Logic'' (1847), and set forth more fully in his ''An Investigation of the Laws of Thought'' (1854). According to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IEC 61131-3
IEC 61131-3 is the third part (of 10) of the international standard IEC 61131 for programmable logic controllers. It was first published in December 1993 by the IEC; the current (fourth) edition was published in May 2025. Part 3 of ''IEC 61131'' deals with basic software architecture and programming languages of the control program within PLC. It defines three graphical and two textual programming language standards: * Ladder diagram (LD), graphical * Function block diagram (FBD), graphical * Structured text (ST), textual * Instruction list (IL), textual deprecated. Per IEC 61131-3-2025, chapter 7.2 Instruction List (IL) is no longer included in Edition 4. Thus, IL (AWL) is no longer part of IEC 61131-3. * Sequential function chart (SFC), has elements to organize programs for sequential and parallel control processing, graphical. Data types * Elementary Data Type ** Bit Strings – groups of on/off values *** BOOL - 1 bit (0,1) *** BYTE – 8 bit (1 byte) *** WORD ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rockwell Automation
Rockwell Automation, Inc. is an American provider of industrial automation and digital transformation technologies headquartered in Milwaukee, Wisconsin. Its brands include Allen-Bradley, FactoryTalk software and LifecycleIQ Services. Rockwell Automation employs approximately 27,000 people and has customers in more than 100 countries worldwide. History Early years Rockwell Automation began in 1903 as the Compression Rheostat Launch Company. It was founded by Dr. Stanton Allen and Lynde Bradley with an initial investment of $1000. In 1904, 19-year-old Harry Bradley joined his brother in the business, and the company's first patented product, a carbon disc compression-type motor controller for industrial cranes, was demonstrated at the St. Louis World's Fair the same year. In 1909, the company was renamed the Allen-Bradley Company. Allen-Bradley expanded rapidly during World War I in response to government-contracted work. Its product line grew to include automatic starters, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Allen-Bradley
Allen-Bradley is the brand-name of a line of factory automation equipment owned by Rockwell Automation. The company, with revenues of approximately US $6.4 1,000,000,000 (number), billion in 2013, manufactures programmable logic controllers (Programmable logic controller, PLC), human-machine system, human-machine interfaces, sensors, safety components and systems, software, Variable-frequency drive, drives and drive systems, contactors, motor control centers, and systems of such products. Rockwell Automation also provides asset-management services including repair and consulting. Rockwell Automation's headquarters is in Milwaukee, Wisconsin. The Allen-Bradley Clock Tower is a Milwaukee landmark featuring the largest four-sided clock in the western hemisphere. History In 1893 Lynne Bradley constructed his first carbon pile rheostat, used to operate a toy lathe. In 1901, with $1000 Dr. Stanton Allen and Lynde Bradley developed a current controlled carbon disc compression-ty ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North Andover, Massachusetts
North Andover is a town in Essex County, Massachusetts, United States. At the 2020 census, the population was 30,915. History Native Americans inhabited what is now northeastern Massachusetts for thousands of years prior to European colonization of the Americas. At the time of European arrival, Massachusett and Naumkeag people inhabited the area south of the Merrimack River and Pennacooks inhabited the area to the north. The Massachusett referred to the area that would later become North Andover as ''Cochichawick''. The lands south of the Merrimack River around Lake Cochichewick and the Shawsheen River were set aside by the Massachusetts General Court in 1634 for the purpose of creating an inland plantation. The Cochichewick Plantation, as it was called, was purchased on May 6, 1646, when Reverend John Woodbridge, who had settled the land for the English, paid Massachusett sachem Cutshamekin six pounds and a coat for the lands. The plantation was then incorporated as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Modbus
Modbus (or MODBUS) is a client/server data communications protocol in the application layer. It was originally designed for use with programmable logic controllers (PLCs), but has become a ''de facto'' standardization, standard communication protocol for communication between industrial Electronics, electronic devices in a wide range of Bus (computing), buses and networks. Modbus is popular in industrial environments because it is openly published and royalty-free. It was developed for industrial applications, is relatively easy to deploy and maintain compared to other standards, and places few restrictions on the format of the data to be transmitted. The Modbus protocol uses serial port, serial communication lines, Ethernet, or the Internet protocol suite as a transport layer. Modbus supports communication to and from multiple devices connected to the same cable or Ethernet network. For example, there can be a device that measures temperature and another device to measure humi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Schneider Electric
Schneider Electric SE is a French multinational corporation that specializes in digital automation and energy management. Registered as a Societas Europaea, Schneider Electric is a ''Fortune'' Global 500 company, publicly traded on the Euronext Exchange, and is a component of the Euro Stoxx 50 stock market index. In fiscal year 2024, the company posted revenues of €38.15 billion. Schneider Electric is the parent company of Square D, APC, AVEVA, and others. It is also a research company. History 1836–1963 In 1836, brothers Adolphe and Joseph-Eugene Schneider took over an iron foundry in Le Creusot, France. Two years later, they founded Schneider-Creusot, the company that would eventually become Schneider Electric. Initially, Schneider-Creusot specialized in the production of steel, heavy machinery, and transportation equipment. In 1871, following France's defeat in the Franco-Prussian War, the company significantly developed its capacity for weapons manufactu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gould Electronics
Gould Electronics Inc. was a manufacturer of electronics and batteries that branched into other fields before being partially absorbed in 1988 by Nippon Mining (now JX Holdings) and closed by them in 2014. The company had it's origins in several battery manufacturers who were consolidated in the period under the ownership of the National Battery Co. History Gould had its origin in a number of companies, including both the Gould Storage Battery Corporation (founded 1899) and the National Lead Battery Company (founded 1920 in Saint Paul, Minnesota). Gould Storage Battery had been founded by Charles A. Gould and was a 100% owned subsidary of his Gould Coupler Company based in Depew, New York. During the World War I the company along with Exide had manufactured batteries for US Navy submarines. During the 1920's they would pivot into producing batteries for the automotive industry. In 1928 the National Lead Battery company reincorporated in Delaware as the National Battery Co. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bedford, Massachusetts
Bedford is a town in Middlesex County, Massachusetts, United States. The population of Bedford was 14,161 at th2022 United States census History ''The following compilation comes from Ellen Abrams (1999) based on information from Abram English Brown's ''History of the Town of Bedford'' (1891), as well as other sources such as ''The Bedford Sampler Bicentennial Edition'' containing Daisy Pickman Oakley's articles, Bedford Vital Records, New England Historical and Genealogical Register, Town Directories, and other publications from the Bedford Historical Society.'' The land now within the boundaries of Bedford was first settled by Europeans around 1640. In 1729 it was incorporated from a portion of Concord, Massachusetts, Concord (about 2/5 of Bedford) and a portion of Billerica, Massachusetts, Billerica (about 3/5 of Bedford). In 1630, John Winthrop and Thomas Dudley of the Massachusetts Bay Company arrived aboard the ''Arabella'' from Yarmouth, Isle of Wight, Yarmouth, Eng ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
