When it comes to selecting the right control platform for your machine application, there are several factors to consider. One of the key decisions you will need to make is whether to go with a programmable logic controller (PLC) or a PC-based control system.
PC-based control platforms offer several advantages that make them attractive to many users. They tend to have a lower cost and smaller footprint compared to traditional PLCs. Additionally, they often come with free product support and offer faster scan times, which can greatly improve machine performance.
However, it’s important to be aware of the downsides of PC-based control as well. One major concern is the potential phase-out of hardware and software, which can leave your applications unsupported. Unlike PLCs, which typically have a useful life of around 10 years, industrial PCs can become obsolete within just three years.
Another issue with PC-based control is the compatibility of operating systems and hardware platforms. The transition from 32-bit to 64-bit systems, for example, can be a challenge and may require significant changes to your control system. Additionally, the retirement of certain operating systems, such as Windows XP, can lead to compatibility issues and potential security risks.
So, how do you choose between a PLC and PC-based control? It ultimately depends on your specific needs and requirements. If cost and space are major concerns, a PC-based control system may be the better option. However, if long-term reliability and compatibility are important to you, a PLC might be the safer choice.
Ultimately, it’s crucial to carefully evaluate your machine application environment, compute power needs, and long-term flexibility demands before making a decision. Consulting with an experienced control system integrator can also provide valuable insights and help you make an informed choice.