PLC full form is a Programmable Logic Controller, a special-purpose computer with no display, hard drive, or keyboard. It can control processes in industries like petroleum, steel, and automotive. A PLC is the workhorse of industrial automation. They are used in commercial or industrial appliances to control systems with minimal or no manual labor. PLCs have come a long way since their inception and have become crucial to modern industrial automation.
In this blog, we will explore the evolution of PLC technology and delve into its significance in industrial automation.
Richard E. Dick Morley is the father of the Programmable Logic Controller, along with Dr. Odo Struger. They both worked with General Motors to develop a PLC that would significantly reduce the dependence on the relay system. Before the introduction of PLCs, the only way to control machines was through relay systems. Relays are electromagnetic switches to switch to higher loads. Relay systems were complex to manage. They had to be rewired to supply higher voltage. The major problem with the relay was that:
The very first model of PLC was the MODICON MODEL 084. Now it has revolutionized industrial automation, mainly used for performing repetitive tasks.
Every PLC has three parts: the input, the CPU, and the output.
The hardware and software components of PLC are as follows:
For the supply, the AC mains need to connect to the power supply. Its output is a DC voltage, which is to supply power to modules attached to the PLC.
Sensors, switches, transmitters, etc. are input devices. Output device includes motors, relays, etc.
Processors include the CPU, which transfers the data from the input to the output module.
Programming devices include external computers that make programs or codes for the PLC.
Various programming languages are used to program a PLC, like Ladder Logic, inspired by relay circuit diagrams. Another one is Structured Text, which is more complex and allows the creation of complex programs.
They are used in industrial settings to control machines. HMI usually has a display with buttons or switches for input, then is read by the PLC, resulting in the output. Example: ATMs.
A PLC is used for repetitive tasks, which has increased the efficiency of the automotive industry. PLC full form itself explains the potential uses:
The most common advantages of using PLC are as follows:
While PLCs offer numerous advantages in industrial automation, they also have some disadvantages:
The PLC technology could be integrated with other systems and devices. The technology could be designed to have a faster processor that would process the information in nanoseconds with a more added memory backup system. Like any technology, PLCs will become even more compact and smaller to use their capabilities efficiently. PLCs can integrate with the Internet of Things or IoT, allowing the exchange of data and further enabling advanced data analytics. It may have more security features like encryption so that only the designated operator cannot access it.
Learn more about some other full forms:
|HDD Full Form
|USB Full Form
|ALU Full Form
|PCD Full Form
|MCB Full Form
|SIM Full Form
|CRT Full Form
|LCD Full Form
|LED Full Form
Like every technology ever created, PLCs have transformed the technological landscape. It has increased flexibility and reliability and, more importantly, decreased the use of manual labor, which has, in turn, increased efficiency. As the technological environment is still evolving, PLCs will evolve in the future, perform even more complex tasks, and will be easier to integrate with artificial intelligence.
PLC full form is ‘Programmable Logic Controller’. It is a digital computer-based control system. It can automate and control various industrial processes and machinery.
The PLC system includes the Central Processing Unit (CPU), input modules, output modules, power supply, and communication ports.
Yes, it is possible to expand or modify a PLC system by adding or changing hardware modules and updating the control program.
The three main types of PLC are:
1. Modular PLCs
2. Compact PLCs
3. Rack-mounted PLCs
PLCs are widely used in various industries for assembly lines, manufacturing processes, and building automation. They are also used in water treatment, energy management, automotive production, and more.
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