Microcontroller vs PLC A Detailed Comparison

 

Microcontroller vs PLC A Detailed Comparison

The introduction of Arduino and scores of other microcontroller based boards nowadays has extended the hobby in embedded systems, commencing up the arena of microcontrollers to a high-quality wide variety. This has now not best increased the range of microcontroller customers, but also extended the scope and packages wherein they're used. That’s why during the last few articles, we've got included a few key topics that are essential for constructing remarkable embedded systems devices like; choosing the right microcontroller for your project, Selecting between a Microcontroller and Microprocessor. In the same vein, for nowadays’s article, I might be comparing microcontrollers to Programmable logic controller (PLCs).

Programmable Logic Controller

A Programmable logic controller (PLC) is truely a special reason computing tool designed to be used in business manipulate systems and other structures in which the reliability of the device is high.

They had been to start with evolved to replace hardwired relays, sequences and timers used inside the production procedure by using the automation industry, however nowadays they have got scaled and are being used by all sort of production techniques inclusive of robot primarily based traces. These days, there might be no unmarried factory within the word that does not have a device or equipment walking on PLCs. The primary reason for their huge adoption and use can be observed deeply rooted of their ruggedness and capacity to resist the hard coping with/surroundings related to production flooring. They are also a very good example of real time working systems as they have high capacity to produce outputs to unique inputs inside a very quick time frame which is a key requirement for business settings as a second put off may want to disrupt the whole operation.

Microcontrollers

Microcontrollers on the additional hand are small computing gadgets on a unmarried chip that contain one or more processing cores, with memory devices embedded along programmable special and widespread motive enter and output (I/O) ports. They are utilized in all sort of day to day devices particularly in packages wherein handiest specific repetitive responsibilities want to be achieved. They are commonly bare and can't be used as standalone gadgets with out the important connections. Unlike PLCs, they do now not have interfaces like show, and switches constructed in as they usually just have GPIOs to which these additives can be linked.

Today’s educational may be focussed on comparing PLCs and Microcontroller systems under specific headings which include;

Architecture

Interfaces

Performance and Reliability

Required Skill Level

Programming

Applications

1. Architecture

PLCs Architecture:

PLCs commonly may be called a excessive stage microcontroller. They are basically made from a processor module, the electricity deliver, and the I/O modules. The processor module consists of the critical processing unit (CPU) and memory. In addition to a microprocessor, the CPU additionally contains at least an interface via which it may be programmed (USB, Ethernet or RS232) along with verbal exchange networks. The power deliver is often a separate module, and the I/O modules are break free the processor. The types of I/O modules encompass discrete (on/off), Analog (non-stop variable), and special modules like motion manage or high-pace counters. The area gadgets are linked to the I/O module.

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