The manufacturing process is always being re-evaluated to find ways to increase productivity and reduce costs. Ultimately, the introduction of industrial automation has changed the way this is achieved. This is done by using control systems that can operate multiple machines and complete work that was once performed by human employees.
In the 1970s, Programmable Logic Controllers (PLCs) were introduced for this purpose. They automated processes, machine functions, and entire production lines within manufacturing plants. In the 1990s, Industrial PCs began to take on the role of industrial automation with their higher processor speeds, smaller footprint, lower costs.
Today, advances in both technologies have allowed each to find a place in the industry. While both are popular in automation, it is easy to doubt their personal capabilities argue a case for advanced controllers.
Main Functional Differences PLCs run by continuously monitoring input received from other devices and then "deciding" how to to those inputs based on their programming. This is all supported by an operating system (OS) designed specifically for such control tasks. While this strict OS design limits the PLC' functionality, their single-use purpose also means they can operate without antivirus software and registry cleaners.
Then, all of their operational tasks can be dedicated to controlling operations. ustrial PCs perform the same control tasks, but their operating systems allow them to run programs and applications that a PLC cannot run.
This means the device can not only be used for purposes but can also take advantage of situations where there is limited space. Their additional features may make them vulnerable to cyber attacks, but modern firewalls and cybersecurity methods make it easy factor to overcome. Construction In terms of their construction, both are designed to operate in harsh industrial conditions such as a factory floor. Remember, we are comparing the PLC to a regular consumer-grade PC.
Industrial-grade PCs are: IEC60068 certified – withstand shock and vibration; fanless – eliminate issue of particles getting trapped in the system, rated for extreme temperatures; customizable - operate with both modern and traditional equipment. In this area, both devices are a close match The only potential difference lies in their physical size.
PLCs can be quite bulky, and not all PLCs can be installed. For many PLCs, installation would inhibit the cooling capabilities and could lead to the system overheating. On the other hand, an industrial computer rarely encounters this problem and is compatible with both din rail and rack-mount.
Programming
Another key difference is the programming of each device. How does one control the control device? Although the terms PC and PLC are used interchangeably when talking about programmable controllers, they have slightly different functions.
The software logic of the PLC uses very specific programming languages that require special training to learn understand, and alter the commands.
Basically, you would need an expert present whenever you want to set up or change the programming of the PLC. PCs run the familiar Windows operating, so they are much easier to operate and the knowledge of their programming languages is more widespread. They can also interact with more types of machines because they can adapt to flexible programming languages as C .