Programmable logic controllers, or PLCs, are industrial and/or commercial computers created to run automated systems. Whether you know it or not, you come into contact with PLCs on a regular basis. From roller coasters at a theme park to traffic lights on Main Street, PLCs are the unseen, crucial component to automated life as we know it. Originally developed to replace relay circuits, PLCs have taken on a life of their own and working with them can be exciting and rewarding. There are two main types of PLCs - modular and fixed. Most professionals in the industry say modular PLCs have many distinct and important advantages over fixed PLCs. This article will discuss the advantages and briefly explore the programming methods used for PLCs.
Basic Programming Information
Education is the key to success, we have all heard it. But how much education exactly? When you were going to high school, you figured that your diploma would be enough - or maybe you didn't see the need to finish high school. But when we're young, we can't always see the bigger picture until later, and now you may be finding that getting a job after high school is tougher than you thought. Here are some of the reasons why you may find that a high school diploma isn't enough and why you should consider continuing education.
When I was a new teacher in the 1970s, each new school year came with the excitement and anticipation of new beginnings. I would go to school a couple of weeks before the official start date to check my new student lists, begin classroom preparation, look over any new texts or equipment, and chat with staff and office personnel who might also be in early. I also tried to discover that year’s “fix-all.” There was always a new panacea to “ensure” successful teaching/learning, better readers, increased graduation rate, improved standard test scores or whatever issue was the current media and public concern. After my first year, I learned to steel myself for the opening meetings, so I could hold on to the joy I felt about getting back to what I loved best—teaching.
A day or two before the start of classes, we were subjected to workshops, guest speakers, hand-outs or films and presentations. Each one of which was to solve a problem or make education successful. During a K-12 career that spanned nearly thirty years, the program rarely changed.*