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...

[@ipolygon1]

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!!!

[@lawrencejairam1397]

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.

[@natlsm]

thanks brother u are really helping out a lot of people underpriviledged here in Africa

[@xevierred6330]

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

[@micahjames8384]

Finally understand how a stop/start station operates !!!! This is quality education right here...

[@snjairbeater]

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

[@dhadumia]

Love!! You are favourite teacher for all your students I believe!!

[@plcprofessor]

Wow, thank you!

[@MrPhyuphway]

Very simple and easy to understandable Teaching . Thus why I want to call you ...Teacher .. keep going sir

[@plcprofessor]

It's my pleasure

[@samuelemeryjiujitsu]

These videos are going to really really help me attempt a transition in my career from serving tables at a dead end job to potentially making real money in a real world industry. thank you very much Prof.

[@martinwang6077]

OMG....shame on me,i'v been graduated for a while and i never understood all this stuff concept~your lecture is really clear and better than all my college's teacher...i am really grateful to watch your excellent tutorial video,thanks a lot.

[@yeemaykyaw2654]

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.

[@user-ro6ou5vb8y]

Thanks God for sharing your knowledge going about to PLC, it is well explain, it is very interesting and a good help for those who cannot go to school like me to learn more on PLC. Thanks

[@plcprofessor]

You are very welcome

[@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.

[@robertopozo2308]

Gracias por este instructivo video. La dicción del orador es muy buena y se entiende perfectamente.

[@plcprofessor]

el gusto es mio...

[@braincrackz]

hello plcprofessor i just started to watch your kind hearted videos today about introduction of PLCs and this time im on part 2. this is wonderful gift for me who has no plc training or education. i hope you will upload more training videos.thank you very much

[@engineerSalih]

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

[@erikgreen1990]

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

[@padrehgoodman1229]

Thank you for a wonderful and clear explanation

[@plcprofessor]

You are welcome!

[@focused353]

Thank you plceprofessor, keep up the good work!

[@plcprofessor]

you are welcome...

[@gligopodrobilica8972]

Prof. you are extraordinary smart and good man. I wish you all the best.

[@plcprofessor]

+Gligo Podrobilica The pleasure is mine...

[@amielalegre106]

Wasted almost half of my life playing computer games. Its about time I turn my life around. Thank you for sharing your knowledge sir!

[@gassanali8667]

happy to hear that

[@JadyGrudd]

Remember your goals. Make promises relevant to them, but be honest in every instance. Admit your mistakes or you will stay a slave to them. Then keep your word in everything you do. A man is worth no more than his word.

[@plchero8370]

Good for you! Go for it!

[@mignon9230]

You dont wasted, maybe you are in a bad financial position, but computer games have a lot of things good. You only need to know what was good, and learn from it, then apply it on PLC. Especialy the puzzle games haha

[@ynnebbenny]

Loving it! At the age of 50 Ive decided to take the bull by the horns and learn about PLC's I'm enjoying your teaching sequence of step by step, without assuming any prior knowledge. Thanks heaps.

[@TexasHobbyist]

Same here... 46 pushing 50. Building the pc trainer and a light finally clicked on and understanding everything. Not hard once you start understanding everything.

[@pinklady7184]

52 here and I am learning electronics. I am doing this as just a hobby.

[@shaungauthier8505]

Ben - Myself as well. feels like Iv'e gone right back to trade school. lol However the beginning illustration here seems backwards? The control is in the line voltage section, and the only reason I see the need for a relay, is just for a 'Red light' ?

[@baharehadokht]

Great to know that never is not late. Good luck with the study

[@thenoicemango1827]

Ben Frawley Hows it goin?

[@LEVIAHAN]

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

[@jsdhesmith2011]

Me too. At 38 I feel old to be learning this now but better late than never. I hope I get to specialize in PLC repair and programming.

[@nonjon6583]

Hey Josh, I know you posted your comment a few years back, but was just wondering if you ever ended up working with plcs I'm thinking about getting into them myself, currently an electrician (commercial)

[@aleksander60v]

How's it going?

[@michaelparry1383]

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

[@willfor]

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

[@christopherberry1759]

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

[@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.

[@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.

[@germainnkongo3910]

Synthpro I notice you recently bought a A&B SLC 500. Me too, and I would like to discuss more on the situation with you. Inbox me at [e-mail]. thanks.

[@willeaitasalo1172]

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.

[@ka4hre]

At 48:36, you said when the coil is de-energized, 1CR-2 is normally open. Did you mean normally closed? This is one of the best videos I've ever seen for starting at the very beginning of PLC understanding. Diagrams are VERY helpful.

[@nateswoodcraft6715]

You're right. He misspoke.

[@bdb7629]

This is one of the vidoe that helped get to know about PLC year back, thank you so much for this vidoe

[@plcprofessor]

You're very welcome!

[@marineastro]

Makes a lot more since now even after just watching 22 minutes of it. I plan on watching more soon. Thank you

[@jhm7463]

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

[@calvinceogara2088]

This is a very clear,detailed and excellent lecture plc good starter

[@americorosales2085]

thanks, plc professor, this is great tutorial ,I have to watching many times, I want to learn more from you

[@plcprofessor]

You are most welcome

[@MontaserArar]

it is amazing Video indeed, no words can describe how good and important it is. God bless your knowledge..

[@plcprofessor]

The pleasure is mine. I am currently completing a new training manual based on the MicroLogix1400 with all new videos. Again, thanks for the encouragement. All of my knowledge and wisdom comes from the Father.

[@spicymeatball1932]

Excellent presentation, very detailed in a not too-overwhelming and easily understood context..Thank you sir.

[@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.

[@createyourworld123]

RB khmerkingdomfilms hy

[@exceedtheman]

Hate to jump the gun here but in college we used RS Logix 5000 and using ladder logic, structured text, and sequential function chart(function block diagram didnt have all instructions proving to be insufficient). Okay so we used the first 3 languages only, to create fuzzy logic and finite state machine programs. Was pretty neat and we watched ur vids all the time in class. Electronics engineering technician here and soon to go for my B.A. to work in town at a local factory. I'll find my powerpoint and share it with everybody here soon.

[@antoniocantu2622]

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

[@ambujab.s4755]

Beautifully made simple. Thank you sir. your simplicity is appreciated

[@plcprofessor]

You are most welcome

[@TheYtgtcpt]

Thank you professor, and honestly it is an honor to learn from you

[@plcprofessor]

my pleasure...

[@Improveng1]

Superb content and presentation, thank you

[@plcprofessor]

Our pleasure!

[@chuckledbetter7670]

ibew local 760 union electrician ; videos are easy enough to follow and are filling in some gaps in my knowledge of plc's ; thank you

[@quocandao7643]

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.

[@plcprofessor]

+Frank x That is nice to hear... the Lord has blessed me with a desire to understand and explain.

[@meesiphht2769]

+Frank x Yeah, this is really well explained. I wish I had it this well explained to me when I was in tech school.

[@tozguitar]

This is excellent. I have an interview coming up for a pharma company that require an electro mech tech and i haven't a clue what to be studying for the interview. It mentioned PLC's in the job spec so hopefully i'll be asked about this sort of stuff. Did it in college but that was 20 odd years ago. This is a great refresher!!! Thanks :)

[@user-po5fn1we7o]

Excellent presentation skills

[@doifhg]

The first electrical/electronics class I ever had, my "professor" sat down and explained to us how he hadn't done anything related to electricity or engineering in over 30 years and that he had gone straight back to business school to become a lawyer after he had worked a year in an engineering field, so he was going to be learning again by teaching us. I can't even compare how much more total and useful this one hour video is compared to years of sh*t instructors while I was still at school.

[@tomservo5347]

It took me quite some time and a very patient co-worker explaining and then re-explaining motor starters, auxiliary contacts, 3-wire holding circuits, etc. But once you 'get' the basics-everything else is just an add on to that basic start/stop circuit. I learned to not be intimidated at a control panel full of wires but instead to patiently trace wires and figure out what's going on. It feels great when everything 'clicks'. Great video!

[@livlumeria]

Yay for +25% speed for those of us with ADHD. Nice lecture. Precise language makes it less confusing. Glad to see a video on the internet using electron flow current.

[@EVIDENTS]

Way better at this speed thanks!!!

[@qtip3998]

Try 200% noob

[@jasonscamman28]

I do that too. Lol

[@gines907]

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.

[@stevenyurchick6557]

Awesome video! Great background and very detailed and thorough introduction. Thanks!

[@pbalarkan]

You have done a great job explaining the basics .

[@cesarrivera6533]

In my opinion your video is probably the best...!! Tnx,,!!

[@totoilongo6132]

Thanks for sharing very good presentation

[@sanatchauhan9611]

Very Good presentation by professor, Expect many more of your presentations. Fantastic

[@victorputzsr4143]

excellent presentation. For someone who needs this level of instruction, there is also a need at the elementary level for instructions on how to get to the next lesson

[@plcprofessor]

There are playlists, each of which have the respective series in order.

[@dhstl2696]

I like your definition and your contents. Thank you!

[@LeCheeseMaster]

a big "thank you" for putting these videos up on youtube, they are very helpful.

[@BRB30]

Very detailed and well explained lecture thnk you very much good sir.

[@omikronsigma2446]

You are single handedly getting me through my PLC course, thank you so much!

[@anelectrician]

An excellent presentation . Thank you .

[@charliemills1337]

thanks for making this! to be able to type in PLC and find great information!

[@fabianvidal9371]

I'm a junior in high school taking a college class and in a program which is focused heavily upon SCADA and this video really helped with my current information of plc' s thanks!

[@danilodelatorre2586]

hey man what class was that?

[@YusufGwaniMuhammedMiskila]

I just want appreciate the good work prof.

[@historic7829]

This series is great. Thank you!

[@plcprofessor]

Glad you enjoy it!

[@markeethorrg1610]

I felt so dumb because others explained it like I was learning to hot wire a spaceship. Thank you for keeping it simple. #ItsSimplyLogical

[@ToppThatZ06]

It's a great video. I've been a j.w for 25yrs and refreshing my memory with the basics was fun. Thank you for a great tutorial. Your efforts are superhuman, considering some of the subhuman responses.

[@AToolWithTools]

Thank you for this series. I intend to get into the maintenance department at the factory I work at, knowing PLCs is gonna give me a definite leg up on the interview.

[@dabforge5731]

Awesome video! trying to get a good grasp on PLCs. Your video has definitely helped me understand some aspects. thanks

[@bcizzo]

I've been watching hours of PLC videos. This is by far one of, if not the best, I've come across.

[@deepaksinghrathore1107]

its very nice lecture and thankful of you for sharing such a valuable knowledge with all

[@mojcarojko8731]

This is probably the best educational video I've ever seen. Thank you!

[@engrmynul]

Mojca Rojko thanks

[@johneire31]

You explain this stuff fantastically, your doing for electrics/PLC's etc what the Khan academy is doing for mathematics. Great stuff

[@TerryLangTechnicalConsulting]

I conclude that some viewers of this first part , introductory video in a series, may not retain the information delivered. The professor fully explains,in english,at the beginning of this presentation, that this first session is "BASIC" circuitry. As far as logic programs go, once the viewer hears that, his cerebral circuitry should designate a physical response, wherin his hand will move the cursor,via mouse or other control, to "click on" part two, following the same input, satisfied/ not satisfied should then be triggering the same type response, part 3 ,4etc.. This cerebral circuit should be re-examined for fault from other interface devices such as human emotion, which triggers deafness brought on by a superior " I know that" attitude. Professor; You may want to close caption this for those individuals, hoping that blindness is not an end response as well. Well done tutorial plcprofessor !

[@silent8126]

Nice!!

[@cream10451]

Thanks Professor, your tutorials are very clear and on point. i will learn a lot for sure.

[@plcprofessor]

+Rican Pacan Thank you for the compliment, it is a blessing to hear. The pleasure is mine.

[@maksmadman]

Great tutorial. As a journeyman electrician on refineries- i came across to what the operators do, but rarely put any thought deeper than running wires from Instruments to J-boxes and so further to DSL. Thanks a lot and Keep it up!

[@elnacholibre1]

I'm learning a lot with your videos... thanks.

[@plcprofessor]

The pleasure is mine...el gusto es mio...

[@steelek19]

Very helpful and informative video! Thank you!

[@robertproctor198]

As an electrician I knew most of this but looking forward to the PLC part, thanks for the video & explaining it in an easy to understand lesson.

[@Susano19]

Finally found a great video about PLC

[@moussakouzrit2278]

The same here !!

[@plcprofessor]

My pleasure...

[@vino1415]

Thanks you so much please don't stop what u r doing 4 minutes video will help a 4 million people

[@jsims2985]

Very well done! Thank you so very much for doing these series!

[@jeffb6276]

The section around the 50 minute mark was very hard for me to understand. But once I did I finally got to reassociate terminology that I knew good and well were not in the right order. I love the 3 pronged attack he takes to teaching

[@outaiffactory3028]

Absolutely helping video for the bigners I do aprictiate your good efforts to learn PLC programing thank you professor

[@SuperDachshund]

This is good stuff! It's tough finding a good intro presentation on this topic but you've done it. Hats off to you my good man!

[@ramvenkatmani]

Nice and informative presentation..

[@abrahamgreenidge8924]

You are currently helping me greatly with you basic explanation omg thank you bro

[@davidnguyen1216]

You're awesome. Your explanation helped me during my on the job training at subaru plant. You're a lot more clearer than my trainers. Thank you. Please make more videos

[@MGPRaleigh]

Thank you so much! Absolutely fantastic video about PLC. I'm going to use your info to train my guys on it to have a better understanding. You are incredible. Can't wait to watch pt 2

[@rakappan1]

Thanks you very much sir , this is the first time I understood the working of contact relay

[@emmanueloputu3325]

thanks sir your lectures has improved my knowledge and am considering undertaking a course in automation

[@danielyoder1462]

This is by far my favorite video to have people watch that are trying to understand industrial control electronics. I know its about PLCs but the information in here is so relevant since its the building blocks of understanding diagrams. Great content right here, I watched this myself a number of times as I went through the journey of learning about controls.

[@Shah_of_Gardez]

Thank You Professor for the awesome work. You Rock..

[@plcprofessor]

RSLogix500, the free version from Rockwell Automation. As seen in my video on building a simulator. Step by step.

[@crismerlynsantosidad8372]

Thanks for sharing I will cherish this in my life

[@izlol3372]

Just what I needed to know, great video!!!

[@taurusgemini4792]

I can't find the words to describe out good this tutorial is; I suppose sublime would do it, this is training/tutoring at it's very best.

[@AnyMotoUSA]

When im done pulling my hair out trying to trouble shoot something, i like to watch stuff like this to confirm that Im still sane afterwards

[@startoursg24t]

I understand that very well. Pretty much do the same thing, to confirm i'm not loosing my mind!

[@jollyharami816]

Thankyounormal opend closed valves Realy 220 v

[@noorielaboab1032]

Thanks…You are very good Teacher.