Programable Logic Controller Basics Explained - automation engineering

PLC Programable logic controller, in this video we learn the basics of how programable logic controllers work, we look at how PLC's work, where they are used and how programable logic controllers replaced relay banks but still use relays. PLC Basics AND gate, automation engineering, what is a plc, logic gate
TELE Controls, who have kindly sponsored this video, are one of the leading manufacturers in the automation industry since 1963.
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[@EngineeringMindset]

⚠️ *This video took a long time to make* if you would like to buy Paul a coffee to say thanks, link below: ☕ PayPal: www.paypal.me/TheEngineerinMindset Channel membership: kzbin.info/door/k0fGHsCEzGig-rSzkfCjMwjoin Patreon: www.patreon.com/theengineeringmindset

[@danielmarequeiglesias5015]

Great video! Are you considering (or do you already have made) a video on PID control? That'd be awesome! Greetings from Spain!

[@fevtronx3664]

Great video, thank you.

[@celsojoven3525]

Soutwoods city

[@vegy08b06]

I'd love a video on the PID loop as well. I'm struggling with wrapping my head around tuning, and I seem to keep getting the Ziegler-Nichols method wrong.

[@EngineeringKampungan]

Hello everyone 🙌

[@madhatterhillbilly4267]

When I worked on a diesel-electric rig I asked what PLC meant, was told "Please Leave Connected". Lol.

[@oneforall5615]

🤣

[@Silwiu]

😂😂😂😂😂

[@elisechow2197]

hahahahaha

[@chrisyboy666]

The fact you got to work,on diesel rig and had to ask what a plc was says everything

[@madhatterhillbilly4267]

@@chrisyboy666 considering most diesel rigs don't have them your comment says everything.

[@dcro9903]

I watched the whole playlist on, " The Electrical Engineering Basics," and I thank you Paul for the visuals and the accompanying explanations that make this subject much easier to understand. Your videos and playlists are well done; Keep up the outstanding work! I look forward to increasing my learning and understanding through your other playlists.

[@felico1100]

I'm a recent Chemical Engineer working in industry and I found this incredibly useful. The examples you provided really helped consolidate my understanding

[@gavinpeterson5323]

Thanks for the input

[@tannerholmes1587]

​@@gavinpeterson5323 Super cringe to act like you're the one making these videos. "Thanks for the input." 🤡😂

[@mbhsk00]

@@tannerholmes1587 Thanks for the input

[@adrianslsaldierna422]

I would like to see more about PID

[@user-oi7xx6gr3b]

I am too

[@nuismai]

Right! Me 2

[@jaredbecker2823]

Don’t take that brief explanation on current, past or future. Not exactly what they do and the whole goal is to reduce cycles or constant changes

[@youcefhamlat4079]

3

[@perryegolson833]

@@jaredbecker2823 Thanks. I was a bit confused by that also.

[@gsmeeuwsen]

This guy is a GENIUS teacher....

[@Stasiek_Zabojca]

I loved to program PLC controllers in school! Those things are so awesome. When I got bored I started to make some music with relays on/off sound by making it switch in the right time.

[@KarlKarpfen]

Let me guess: Now you work for a relay manufacturer to build his stand at trade fairs like the Hannover Messe. Every single relay manufacturer there did exactly this with teir relays.

[@Stasiek_Zabojca]

@@KarlKarpfen No, not really. Programming CNC machines and making things on them is more interesting thing for me and that's the way I chose. But sometimes I miss programming PLC's.

[@Slimbo_85]

Where did you go to schook to kearn PLC? And programming them

[@Stasiek_Zabojca]

@@Slimbo_85 Technical school in Poland, mechatronics.

[@mwanikimwaniki6801]

@@Stasiek_Zabojca interesting. I'm doing mechatronics right here in Kenya and will be learning PLCs

[@hubertcumberdale6404]

I just started an electronics programs at a local tech school. I can not thank you enough for the videos you make. They have been directly related to the material I am learning and have definitely been a study aid for tests. So thank you for walking people thru the magic of electricity and helping a noobie like me learn!

[@rylandallas9907]

Send us some questions when you have a chance!

[@joshuanavarro2734]

@@rylandallas9907 I’m also in electrical engineering tech school

[@viv1dre4m33]

This is more electrical than electronic dude

[@warrenscorner]

Another advantage, or disadvantage depending on which side you are on, of PLC's is the ability to download a virus and destroy your adversaries centrifuges. Excellent video and great animation.

[@Carlos-iq4th]

References XD

[@RyanWilliams-lh7pr]

“No more enriched uranium for you today”

[@michaelmolter6180]

I try my very best to avoid connecting my PLC projects to a network unless I absolutely have too, and even then I use something called a VLAN to isolate them from the wild wild west (er, I mean internet). Even then, if someone REALLY wants to break your stuff, I can imagine a virus that infects your computer, and then eventually infects your PLC when you connect via USB (or other) to push an update. In the real world, security is never 100%. Its a function of how much money and time you spend defending your system divided by how much someone malicious is willing to spend to break in!

[@KarlKarpfen]

That actually depends on the way it is integrated.

[@lordjaashin]

and people wonder why they hate us

[@RajanHeera261001]

I love you. From now on, I will worship you. I literally have an exam next week on PLC's and because of the pandemic, we didn't have a lot of time to work with them. Thank you so much for the informative video. Keep up the good work!!!!

[@elcontrastador]

So thorough...I appreciate how long this takes to be so thoughtfully planned and produced. Kudos!

[@matheusbatinga4378]

Awesome content. I'm a beginner in the field of industrial automation and your videos are a must watch for me and my colleagues; I always share the videos with them so we can discuss. Thank you very much for the high quality content and please keep posting.

[@neilpritchard4734]

I am an apprentice in the United States and I just want to say that these are the best videos I have ever watched. Thank you for putting these together and making them easy easy to understand. They Are actually priceless when it comes to growth in in my field and that is amazing

[@kinged9862]

What are you learning?

[@neilpritchard4734]

@@kinged9862 more theory than anything. I love the school I go to but if you miss something, the class doesn't stop until you get it they've gotta keep going. so as I learn install at work I can view these videos and they really break down the concept behind electrical. everything's just a switch.thats the best advice I've been given

[@Letsgoback2thefuture]

we have job Vacancies for Automation technicians at Flextronics, Austin TEXAS send a dm if you have 4years+ experience in the field. Military personnel with PLC technical training are encouraged to apply. Associate Degree in related field is a plus.

[@Rotwold]

Values from sensors / actuators is almost never taken from 0 volts or 0 mA etc. The standard is 4-20mA. It's due to the risk of not knowing whether for example a temperature sensor is reading correctly or if it's faulty. Always passing current to the sensor is a simple and effective way to avoid the problem.

[@freefrag1910]

i just wrote the same and read this after, lol :D

[@stevenurban5909]

As someone who works for Siemens this is not true

[@henrychanner4032]

@@stevenurban5909 wtf are you on about? 4-20mA is a safety feature...need a live zero mate otherwise how do you know if it's fucked or on 0? If it's reading 4mA, you know it's not fucked and the sensor is on 0

[@henrychanner4032]

@@chilipalmer2195 looks that way 😂

[@clements41]

Ok I'm dumb but basically you're saying minimum 4mA to ensure its ok and 0 signifies faulty right ?

[@kirkjackson3306]

I work as a maintenance technician at a food industrial plant. They basically gave me the responsibility to take care of our two new robot tray stacking a product unloading devices. A company controls engineer for the robot's manufacturer help me realize changing code for a machine that runs on more than 2 axis takes a lot of knowledge and patience. I have a ton of respect for these automation specialist!

[@Battttt]

Are they FANUC robots?

[@kirkjackson3306]

@@Battttt may as well say that, they were made by Schneider packaging.

[@Battttt]

@@kirkjackson3306 haha chill out im just wondering whether youre gonna have a shit time or not 😹

[@kirkjackson3306]

@@Battttt I'm chill I was I just answered you question

[@pilotelliott]

There’s always another to our god complexes 😂 those guys are too smart

[@Faz527]

Hard to find videos like these which explain maximum content in a short span of time with excellent demonstration

[@EngineeringMindset]

Glad it was helpful!

[@zf5656]

Thanks for breaking this down so well. Too often education gives definitions that are only understood if you already understood it to begin with. Thanks again.

[@lgninjalo]

I dig this video. As usual you are spot on. I would just like to mention that the PLC scan cycle can also be asynchronous, where the outputs are turned on as soon as the rung preceding them gets a logical true, rather than after the execution of logic. Logix5000 controllers are asynchronous, for example, while Productivity controllers are synchronous. It can make a pretty big difference in your logic and lead to undesired results, so it is always worth finding out which type of scan cycle your controller has via the manual or a call to tech support.

[@elc2k385]

That third example of the optimizer in the PLC controlling building temperature waa pretty neat.

[@Xoulis]

My god i cant describe how much i love PLCs. In school i was the only student being enthusiastic about wiring them and programming them ( we used Ladder)

[@aaronjoseph1777]

I'm a former aluminum smelter production worker. I worked around industrial equipment and machinery that ran off PLCs. I learned how to fix my equipment and machinery by learning how my machines cycled. This allowed me to find the missing inputs or outputs to figure out what was broken and needed replaced to get up and running quickly.

[@aaronjoseph1777]

I lost my 13 year career after my plant closed July 2020. There was a news story about how my former planet may reopen.

[@prathameshpatil6888]

Ask for a raise!

[@mwanikimwaniki6801]

@@aaronjoseph1777 Why'd it closr

[@rubberlegs88]

Hawthorne?

[@markhalden3922]

Wish this video was available when I was doing PLC'S in my engineering course.

[@StigDesign]

me2 :)

[@RyanWilliams-lh7pr]

Same here, I’ve never had it so comprehensively yet simply explained.

[@michaelmolter6180]

Best way to learn PLCs is to just buy one and play with it on your own. Build a traffic light. AutomationDirect has some cheap starter kits to get your off the ground. Overall, PLC programming is like welding, despite what everyone tells you, its not as intimidating as it seems, but then again, theres still a difference between a farmer who welds and a certified, union welder. Its the same with PLCs.

[@imbatman2011]

@@michaelmolter6180 how much would a setup cost?

[@michaelmolter6180]

@@imbatman2011 Take a look at the C0-00DD2-D. Its really the most basic, least expensive ($69 + free shipping) option to start with. Youll need a 24 VDC power supply. They sell those (and also one that specifically attach to the PLC if you prefer) or you can get a cheap one on ebay or something. All the I/O is 24 VDC. Another option from the same product line has relay outputs which would be more useful for controlling thing like Christmas tree lights or other 120 VAC loads.

[@privacyvalued4134]

4:03 That luggage delivery system animation seems about right. The only thing missing is a forklift or luggage cart running over the suitcase to properly compact the contents.

[@PatrickKQ4HBD]

4:00 You killed me with the suitcase! 😆

[@fernandezmarkbrianc.2542]

Best way to explain for the begginers and students

[@pdenn1s]

Talking about old electrical substations, had a fellow apprentice when I was young who was careless with his elbows and blacked out I guess about a thousand homes by slightly bumping one of these old mechanical relays, was hilarious to me because well, it wasn't me. :D

[@ryandavis9879]

It seems like every time I have a question about something in engineering, this channel has a video about it.

[@JDsSportsRoom]

Ty so much for making these videos. I'm a maintenance mechanic looking to step up my game!

[@Houkie]

for this I went 4 years to scool. Thanks for the good videos

[@deniskalugin7984]

Excellent video with nice explanation and examples! One of my favorite channels! Thank you very much!

[@wangweixing88]

The best video I saw about PLC! Well-explained.Thank you!

[@kevinbarrett8802]

I've been taking a course on PLCs and have been seeking visual examples to go with my book from atd. Thanks.

[@mandakhg6568]

Great. In addition to automation engineering series, could you explain the operation of SCADA and PID in your upcoming videos?

[@fcknkllr]

Great video! Excellent explanation for someone who knows very little on PLC's.

[@mchan6392]

PLCs compared to PCs are more simple, used within industrial tech. Thanks for the video

[@Rotwold]

Wouldn't be surprised if they still used Motorola CPUs in the lower end gear. But yeah they are meant to have just enough bytes to be able to perform it's task. When programming for critical applications it's good to know what every byte is doing in the machine 👍

[@attilakovacs6908]

Depends, the PLCs I'm currently programming are running Win10. The PLC functionality runs in isolated cores. You can have a single device run both the PLC software and the HMI as well.

[@RonJohn63]

@@Rotwold or even Z-80 derivatives. It doesn't take much CPU power to check a bunch of input sensors 20x a second...

[@GimletBoy]

Great video. Can't imagine how long it took to put this together. One little side note on batteries. You sort of leave the impression that the battery will allow the PLC to function in the event of a power loss. I'm sure you are aware that the battery simply continues to provide power to the RAM memory so that the program is not lost if power should fail. But the PLC would immediately power off. And for some PLCs, the battery also powers the real-time clock so that the date and time will continue to increment while the unit powered down. Again though, great video.

[@gabrielgarcia7554]

Thank you for writing this addendum, that makes more sense on what the exact roles, limitation and capabilities are for the PLCs.

[@Shadowwand]

This type of logic is also very common in Scripting like Lua, where Event Handlers respond to changes in input values or states, they perform functions based on other inputs and variables, and produce some sort of result. Excellent video!

[@fevtronx3664]

Have not heard of LUA before, will check it out - thank you.

[@Shadowwand]

@@fevtronx3664 It's implemented in many solid state controllers as a scripting language for parsing Inputs, and I bet some PLC's actually execute LUA Code. Things like Create Var Lobby Set Point = 80 Create Function Event Handler Input 1{ Create Var Lobby Temp = Input 1.Value IF Lobby Temp > Lobby Set Point THEN run Function (Lobby Temp ) } Obviously that isn't really a LUA Command, but you can kind of see what I'm talking about. And of course the Set Point can change depending on time of day or date etc.

[@usmiech1]

I worked at PepsiCo Chicago with AB 5/40 , 5/25 , 5/15 , SLC 500, SLC 504 , MODICON 984 ,484 . Great machines great, experience !!

[@danielalexander3571]

Absolutely amazing, I’m a fourth year apprentice electrician and you don’t understand how simple that video is to understand compared to tafe

[@aryanshirke3957]

Thank you very much sir for providing us with valuable course of knowledge at our fingertips!

[@charltoninao3565]

very nice video.. hope to see PID, DCS amd SCADA lecture soon sir. Appreciated your effort and the channel as well.

[@GururajBN]

Very instructive video on a topic of specialised interest. More than thirty five years back, I have seen industries using CNC machines such as lathes and machining centres, programmed to produce precision components. In some cases, conventional lathes were converted to CNC like capabilities by interfacing with PLC. I guess that programming for producing a precision component must be more complicated than mere climate control in a building.

[@RSBot2jar]

I love the way you keep it easy to understand, thanks!

[@JN24185]

These are very helpful. We use PLC’s in our Hydrogen Dispensers. Because hydrogen can be so volatile, numerous safety measures, boundaries, limits etc, both temperature, speed and pressure related, must all be controlled simultaneously. Only a PLC can do this!

[@NukHind]

My Stormworks Micro-Controller Knowledge now has USE!!

[@user-st9yr9fk7k]

Thanks so much am an industrial mechatronics student and this video has helped me alot

[@funkykong9001]

Awesome! I've always wondered how PLCs work. Thanks!

[@shafiqalom8408]

Really a sound video on PLC introduction...

[@yayo2363]

Please please continue with these plc videos!!!!

[@leelaturanga8594]

Thank you so much for the well-made and high-quality videos! They are very informative, easy to understand, pleasant to watch and listen to! Excellent animation, helpful examples, clear explanation; keep up the great work! By the way, what is the font used in the videos?

[@saisagarghorpade2217]

Thanks a lot fir such an amazing Video. Found it extremely helpful as an Mechanical Engineer.

[@panasvid7825]

This top tier quality video and explanation as well wow..... Keep up the good work

[@09huang]

This is such a great explanation! Thank you

[@howardbaxter2514]

We are just now getting started on that stuff in my engineering class. Going to be fun to program one to control a robot arm.

[@vijayme123able]

Hi, it was really a good explanation, Thanks for this. May be you can cover DDC, SCADA like topics next time in the list. Again thanks for this bro.👌👍

[@adityarawool9277]

Great, very neat and easy explained. Thank You🙂✌

[@jimbass924]

Great explanation of basics for pics. Clearly understood!

[@andyramone8497]

Your channel is truely amazing. Super informative.

[@MilleniumTestimony]

Very detailed and informative yet easy to follow.

[@jarskil8862]

KZbin surely knows what one needs :D I need basics of this stuff for my part of a project.

[@harshsuvarna8784]

Amazing video! Please make videos on DCS and SCADA as well!

[@mrslawek8808]

Wow! Grat video, simply explained. Maybe I'll surprise automation maintenance guys with my knowledge

[@marcemarce9821]

Awesome teaching thank you

[@meawreg]

oh man you should of seen the start/stop PLC/Ice cube relay configuration for UPS's distribution center cabinet we had to move one time, was the coolest thing at the time.

[@autoplcandarduino]

Great tutorial, thanks authors from vietnam

[@TimurChepiga]

this is gold! would like to see about this

[@JC-sc9rx]

Great video! This is one of my favorite channels

[@enghana8702]

Reallyyyy thanks for this vedio i didnt know about plc before but now i have an idea of it thankkk uuuu ❤️❤️❤️

[@acectrl]

Thanks for the great video! Well done!

[@elena6516]

Yes! Thank you! Can you do one on industrial/institutional high pressure steam system?

[@EngineeringMindset]

Yes, soon. Some steam videos coming next week

[@elena6516]

@@EngineeringMindset awesome, thank you!

[@gingganggoolie]

Great video! Reminds me why I love engineering (and helps with my homework lmao)

[@jeanpierre9266]

This was awesome thank you for the video upload.

[@somyaranjanmohanty8516]

Better than the first suggestions.... it's really helpful

[@mujahidakberali]

Great video sir. Plz make video on pid control with plc. Thanks for great content🙂

[@jacopodigiacomantonio3103]

very cool stuff delivered very clearly! I want to put my hands on a PLC DIY project for automating my house!

[@FrederSnorlax]

Ive uninstalled an old plc with 60 digital inputs and I’m trying to think of something fun to do with it.. burglr alarm??

[@dscott130]

Well explained! Thank you!

[@rhoonah5849]

I used to work for a process control software company called Intellution back in the mid to late 90s. We developed SCADA software and had a product called FIX Dynamics. I wrote some cool communication drivers to talk to various PLC's. We had a driver toolkit called the OSDK: OPC Server Development Kit and I was the one that put the OPC support in it. I wrote a couple of Allen Bradley drivers, a Modbus driver, etc.

[@clarkdavison4766]

Back in the late 90's I was a software/network engineer working for an automation company. We used Intellution Fix and I think iFix was just released. I remember installing and setting up the OPC Server to communicate with the PLCs. Allen Bradleys mostly, if I remember correctly.

[@rhoonah5849]

@@clarkdavison4766 That's really cool. I worked at Intellution from 1995 until 2000 (I think). I was responsible for putting the OPC capability in all of the drivers. I wrote the OPC Server Client driver which was pretty cool and allowed us to bring in data from any OPC Server. I wrote both the ABR which was the Allen Brandley RSLinx driver and the ABC which was the Allen Bradly Cyberlogic driver (yes I lobbied hard to NOT call it the ACB driver). I added some really cool features in those drivers and they were able to get incredible performance. I remember talking with one of the chief architects of the RSLinx software and I showed him the ABR driver and he indicated that they couldn't even get the throughput that I was getting because of all of the multithreading and queue optimization and stuff that I designed. Anyway, if you were using iFix and OPC with Allen Bradley then you were using software that I designed and wrote. I hope it worked for you... lol.

[@vjm3]

Hey. Thank you for teaching me.

[@andreyace8768]

Thank you for the video!

[@user-qj3rv2mo1b]

Well explained. Process mechanical engineering experience, process control valves, open & closed loop control systems education, and computer experience helped me clearly grasp the details while watching the video. I was able to compare with my existing knowledge . I want to learn ladder logic. Could u launch educational videos on ladder logic, starting from basics? Thank you

[@AJ-et3vf]

Awesome video sir! Thank you!

[@Z901Z]

The Engineering Masterminds!!!!

[@EngineeringMindset]

Haha, thank you Zia

[@4dirt2racer0]

dam awesome video thanks man much appreciated

[@renatomyrto7591]

Nice job you doing guys, very helpful you videos

[@braulioojeda5200]

Beautifully explained

[@manuboker1]

Great lecture! Thanks

[@ComeCloserDarling]

Great video, thanks.

[@vanprakash5614]

Thanks. Great education video.

[@spyrospapavieros3715]

You are a great teacher!!!!!

[@CipherKilledit]

Nice upload! Killed it!

[@Cees1984]

Nice video, Very well explained 👍

[@rathinasabapathyr5358]

nice explanation. put more videos about industrial automation

[@michaelf3805]

I like how you had the suitcase tumble off the conveyor belt. Very accurate haha

[@MuhammadShahzad-dx5je]

Wao amazing. Thank you so much for your efforts. Could you please make a video like that on FPGA?

[@MikaelsWorld7]

GREAT VIDEOS...THANK YOU

[@edwardscomputers]

Thanks!

[@edwardscomputers]

this guy is so amazing...you could spend $12k on a tech college so please show your appreciation people

[@EngineeringMindset]

Thank you, Corey! Appreciate the support

[@acectrl]

Great video. Cheers!

[@goldennugget5680]

I always wanted to learn about PLC's

[@sunilbehera3367]

Great knowledge

[@olejnizak]

good job! excellent!

[@benallen5751]

So helpful!