A programmable logic controller (PLC) is a specific computer, which is used to manage machines process. Its main purpose is to monitor critical process constraints and regulate process operations. It uses a programmable memory to accumulate instructions and specific functions such as timing, ON/OFF functions, counting, arithmetic, sequencing and data handling. Some components of PLC are processor, input module, output module, power supply, sensors and programming device. Some essential characteristics are collective inquiry, shared mission (values, vision and goals), action oriented & experimentation, collaborative teams focused on learning, result orientation and commitment to continuous improvement etc. In addition, some programming languages are functional block diagram, Boolean mnemonics, ladder logic and sequential function chart.
Refering to study, “Global Programmable Logic Controllers (PLC) Market by Architecture, Product, Industry Vertical and Region 2014-2025: Segment Analysis, Trend Forecast and Business Strategy” some of the major companies that are currently working in the global programmable logic controllers market are B & R Industrial Automation GmbH, ABB Ltd., Emerson Electric Co., Hitachi, Ltd., General Electric Co., Honeywell International Inc., Mitsubishi Electric Corp., IDEC Corporation, Omron Corporation, Rockwell Automation Inc., Robert Bosch GmbH, Siemens AG, Schneider Electric SE, Yokogawa Electric Corporation. These key players offer product innovation, technological advancement and maintaining quality standards.
On the basis of architecture, the global PLC market is segmented into software, hardware and system services. Hardware segment is sub-segmented into power supply, processor and input or output. System services are sub-segmented into maintenance, training and consulting. On the basis of product type, the global market is segmented into micro or small PLC, nano PLC, medium PLC and large PLC. Moreover, on the basis of industry vertical, the global market is segmented into chemicals industry, automotive industry, food & beverage industry, energy & power industry, oil & gas industry, metal & mining industry, pulp & paper industry and water & waste water industry.
Some brands includes Gould Modicon, Allen Bradley, Texas instruments, Westinghouse, Cutter Hammer, General Electric, Square D, Klockner & Mouller, Siemens, Festo, Telemechanique, Omron, Toshiba, Fanuc and Mitsubishi etc. Some advantages include high speed of operation, reduced space, cost effective for controlling complex systems, flexibility in programming & reprogramming, ease of maintenance or troubleshooting, small physical size or shorter project time, energy saving, ability to communicating and reliability. Apart from advantages some of the disadvantages are unchanged operational sequence, limited design & cost option and single functionality.
The market of PLC is mainly driven by increasing requirement smart operations in factories, rising adoption of automated systems, increasing prominence of programmable automation controller, rising of augmented reality, high prevalence of personal mobile devices, rising development of smart cities and technological advances are increasing significantly which led to the growth of the PLC market.
In 2017, many PLC technologies have developed, which provides accurate & comprehensive picture of operations and production of information technology. It is estimated that the revenue of global PLC market will be reached at USD 156.8 billion during 2018-2025, due to controls in various industry verticals.
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