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Programmable logic controllers (PLCs) are industrial control systems that provide continuous monitoring and control of input devices. They use collected information, combined with the user's customized program, to make computer-based decisions for output control. PLCs are used to enhance production lines, machines, and processes and can be tuned for specific tolerances, self-correction, or gains.

These controllers contain a central processing unit that operates the user's program internally, communicates with other devices or networks, and maintains operation. The main steps include the input or scanning on inputs, the execution of the program, the scanning of outputs, and communication of information. While each PLC performs much the same operation, they can differ in cost, power source, programming, input and output compatibility, memory, speed, and connectivity capability.

While originally designed to eliminate the need for rewiring and adding hardware for new relay configurations, PLCs have made it possible to alter and replicate certain operations while simultaneously collecting and sending related data. Over time, they have also become more modular, making it possible to mix and match different input and output devices to best adapt PLCs to a variety of applications.

PLCs supplied by MCMA Member Companies

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ACS Motion Control

ACS Motion Control

1 North America
Asia
Electromate Inc.

Electromate Inc.

1 Asia
Australasia
Europe
North America
South America
FANUC America Corporation

FANUC America Corporation

1 North America
South America
Galil Motion Control Inc.

Galil Motion Control Inc.

1 Africa
Asia
Australasia
Europe
North America
South America
Kollmorgen

Kollmorgen

1 Asia
Europe
North America
South America
Parker Electromechanical Automation

Parker Electromechanical Automation

1 Africa
North America
South America
Australasia
Europe
Trio Motion Technology

Trio Motion Technology

1 Asia
Europe
North America
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