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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