What is a PLC? PLC Basics Pt1

This is an updated version of Lecture 01 Introduction to Relays and Industrial Control, a PLC Training Tutorial. It is part one of a two part lecture. PLC Programming. Correction...Joseph Henry invented the relay...

[ipolygon]

Sir, I am 20 years old. I did robotics in high school with some really simple programming and it got me in the room with a engineering firm that then proceeded to send me out into the field to replace another programmer who was being difficult to work with. I had no prior knowledge of PLC’s but after watching your videos I have acquired the requisite knowledge to preform well in my job and secure me the CTO of a company and open whole new paths in my life. I could not think you enough for how well you made this video. You didn’t assume any prior knowledge and it was easy for me to pick up. If you’re ever in dallas Texas I’d like to get you lunch!!!

[lawrencejairam]

As an old timer, I decided to learn about PLC' s to be more relevant in the job market. With very little electrical knowledge, I wasted a lot of time and money trying to get going. Fortunately, I found 'plcprofessor'. I am actually understanding and learning.
Thanks a lot Pro.

[christopherberry]

Your videos have been such a huge help in learning PLC'S that I have been sharing them at work with MHE & CST techs.

[erikgreen]

Wow this video is absolutely unbelievable, by FAR the best educational video I’ve EVER seen on YouTube

[willeaitasalo]

I'm starting to learn more about automation that uses PLCs on Beckhoff servo motors and your introduction about this subject was simply amazing!
The explanation of the relay's functionality was so clear to understand that the rest of the video and its subtle transition to FALSE/TRUE logic went quite smoothly to follow. Even without the deep breathes pauses. Many thanks for this video and I'm quite glad to see that you continue to produce videos nowdays, which is why I just subscribbed to your channel.

[engineerSalih]

This is absolutely the best PLC video I have ever come across . Your noble efforts are highly appreciated Sir .

[xevierred]

This video is above and beyond what I've watched before. Controls is my Achilles heel.
Thanks

[michaelparry]

plcprofessor, Again, great job. I am starting your series on PLC training. I do have an undertstanding of PLC devices and the A-B platforms. My main purpose to watching your training is to evaluate these training sessions to be used by those that we are training to work with our Automation and SCADA systems. You do have a great process of training. Your details are most valuable. Thank you again for all that you have done and do. You are a great help to all who will spend the time to watch. AOK

[jhm]

Omg, I'm impressed of how well you explain about PLC, because at college I barely could understand of programming. Thanks for the videos...

[JesseH]

This excellent. Threw me a few curve balls. It's been a while since I have worked on these. That was way before PLC came into play. I'll be watching much more. Nothing like education even at my age.

[snjairbeater]

Very thorough. Made me digress to my Vo-Tech Training back in 1976 - 1981. Electrical Theory! WOW!!! Very Nicely done.

[quocandao]

This video was very well produced. He's much better than most of the lecturers I had at uni. Everything is explained properly and details are thrown here and there that illuminate concepts. I have an engineering degree and found that I learnt much, much more just from this video than my typical lectures. Thanks mate. Appreciated.

[LEVIAHAN]

Decided to switch my career and delve into Industrial Automation. This is the only video in youtube that is indepth and simple. Ty.

[willfor]

Excellent video!
You consider the perspective of the beginner, and identify what needs to be explained most very well.

[kmerkingdomfilms]

Thanks for spending your valuable time to teach us. I Really love learning from your lessons. Your're a great instructor.Thank your very much.

[yeemaykyaw]

I am just 22 years old girl, who just started learning PLC Basic. When i first found this video, I was so happy that finally someone who can show me the real basic of PLC. I can't thank you enough. Thank you so much for this video, and also hoping you to share more education video about Programmable Logic controller more.

[KENNETHUDUT]

Did I share this already? I'm really impressed about this. I've always been a computer guy. Straight to programming. All the "before" stuff I understood already in a general way (0's and 1's are basically telegraph key presses) but the way he goes through this slowly and carefully and thoroughly is really amazing. He filled in ALL sorts of little gaps in my knowledge from an entirely different perspective than I'm used to.

If you do ANY programming, watch this stuff. Go through it. You'll walk away very impressed the stuff your computer/phone/tablet is doing... because THIS is the stuff it comes from. This.

Expect a headache; the language is not what you're used to if you never did electrical engineering/controls stuff. It feels like stepping inside of my computer and walking around the circuits.




What impresses me is that I never realized the technical difficulties that they must've gone through for the miniturization of this stuff to end up in the form that we use today.
Consider how these circuits were reduced to the level of electrons and electron holes.. and now we're trying to go further... it's sinking in.

[antoniocantu]

Watching this to prepare for U.S. Steels electrical learner program entry test. Great informative video on PLC.

[synthpro]

This is a great review for me. I am an electronics tech but took a PLC class in college back 15 years ago. Just recently bought a A&B SLC 500 setup cheap and will be re familiarizing myself with programming just for little projects.

Thanks for these great refresher videos, you explain things very clearly.

[gines]

Thank you professor! I've been looking for a real good online course for learning PLC, and honestly this is the best a found and I've been looking a lot! Really really good.