PLC Basics: Structured Text

[@Dlaba1973]

Sorry if I am missing something. About the quiz in the beginning: did anyone point out that the ladder function is an OR function, while the ST function is and AND function?

[@gretarmark]

Yes, the ST IF statement should be OR.

[@agericabella6909]

I was searching this comment.

[@Dr_Mathe_Omdala]

That part threw me off. Tough to believe whatever follows later on in the video

[@fabrezz1]

@@Dr_Mathe_Omdala hard agree

[@ShabsShabs-ej8xt]

I am new in automation and this lecture is inspiring and explicit

[@plcprofessor]

at 19:45...that is not a normally open contact, it is a true if on, the instruction is logically true if the bit in memory that it is addressing is ON...hence True If On. The symbol is reminiscent of a NO contact of a relay that has true continuity if the coil (bit in memory) is ON. The True If Off symbol that is reminiscent of a NC contact is logically true if the bit in memory that it is addressing is OFF much the same as a NC contact had continuity if the coil was de-energized. They are True/False instructions, not contacts. It is all about logical continuity.

[@Naveenkumar-db1ei]

I think the gate funtction in LL is "OR" but in st you used "AND"

[@Txpo50]

Yep…so everyone that got clapped for was still wrong. Should have been Out1 := (In1 OR In2);

[@fabrezz1]

@@Txpo50 Yeah I just stumbled on this video and was confused why he didn't address that.

[@swenschoneberg7320]

About the quiz: I’m not sure if anyone has pointed that out already, but the main thing that is missing in the ST code is an ELSE section resetting Out1.

[@nishyu9101]

Hey Awesome Vdo! i was just troubled by something..@8:07 people are using AND logic, but for a similar circuit @22:00, you clearly show us that its OR logic.. soo is this like an Easter egg or something?

[@nytman4359]

I was just about to write a similar post... I am confused about that as well

[@vladokrtolica]

It is OR logic on both examples.

[@talinalugo5857]

At your time stamp 3:49, should the slide read based on the picture given: IF In2 OR In2 THEN … not AND?

[@plcprofessor]

At 22m38sec most PLCs have an XOR instruction, enter the two variables and the output expresses the exclusive OR.

[@jamiemarshall8284]

Your example at 8:10 is a hard fail. It should be an 'OR' statement, not an 'AND'

[@plcprofessor]

At approx. 9min. the ST comparison is missing the ELSE component. The OTE in the LLD has a true and a false execution...if the rung is true it turns on OUT1 and if it is false it turns it off. The ST turns on OUT1 but I do not see the ELSE OUT1: =False; Your responders provided other solutions but not what was missing...AND even worse is that the ST has ANDed variables and the LLD has ORed variables. The only thing in common with this example of ST and LLD are the names and datatypes of the variables.

[@justingoodman1]

My words exactly!!!!!

[@hasanmahboobrahil]

You are really doing good . your voice is clear and accent is very smart . Everyone can easily understand your words and meanings. Really worth appreciating.

[@Olavotemrazaodenovo]

Excellent. Congratulations from Brazil.

[@nitepedia3184]

OR instruction should be used in place of AND in ST language. It should be like Output1 :=Input1 OR Input2;

[@ismaeliso]

Should definitely be an OR statement Output1 := ( Input1 OR Input2);

[@deniskalugin7984]

Hi! I am a bit confused about the following thing: at 8:26 you said that we should use "AND" operator, but at 22:27 (Output4) "OR" operator is used. Which one is true? I am beginner at structured text. According to logic, "OR" operator should be used.

[@carlosdoroneto9509]

The information at 22:27 is the correct one. At 8:26 it shoud have been OR.

[@takedwon98]

Yes, 8:26 should have been an OR.

[@NASSTRACINC]

Yes, 8:26 it should be OR

[@HamedAdefuwa]

Lol good catch

[@avral4148]

With this excellent tutorial I was able to crack the code in plc for troubleshooting gauge!😊

[@roads543]

I don't know ifbyounare aware, but in PLC ladder logic there is no such thing as normally closed/ normally open. It's XIO/XIC, or break/make instructions, respectively. N.O. and N.C. is strictly used for the mechanical field side. Having a XIO or XIC instruction tells you nothing of what's in the field. For example, relay ladder logic a stop is always on a N.C. device. However, in a PLC instruction you would have it on a XIC or make instruction because you want the PLC to supply power to the output when the stop switch is in its normal state.

[@Bularistan4o]

Finally, a video without Ladder!

[@tranducthinh2145]

Amazing but how do you define the number of element in an array (I did not see it in the video) and if not why the Myarray output 10 values

[@daniellewhite1622]

Awesome video! It covered a lot of basic instructions with excellent exclamations in a short period of time.

[@johanxyy]

Ladder says OR and structured says AND. In the 8:05. ???

[@ThisisAutomation]

Good catch, Jure! You get extra points for paying close attention. That was pointed out by those that participated in the video challenge, but it slipped through into the video! Thanks for pointing that out!

[@pvssrinivas]

Please correct the video. This is really going to confuse people who are just starting to learn PLC's. Thanks!

[@patels1995]

How do I go about connecting to an RS232 COM connection in structured text? How can it be initiated and written and read?

[@mashuduluckytshivhase7685]

good evening. I am asking for the software You are using, I need to practically learn this using it.

[@aei236kalyani5]

Is python language similar to ST

[@maddock5800]

is the whole For loop executed in the single-cycle (B&R program cyclic) or if the For loop has 100 loops so it will take 100 cycles to finish the loop??

[@HuyNguyen-up1vu]

A for loop executes completely in a single-cycle, so be careful if the loop is to long, cycle timing constrain will be violated and PLC will give some kind of warnings.

[@Peace88Hi]

Hey Cory, how can one download this software? Could you provide a link, please?

[@sidikging2988]

Why u should make us wait 40 seconds? U can edit and remove it from early video.

[@saintpeter1802]

is Structured text (ST) as Pascal language ?

[@eebbawaaqayyoo6266]

can we substitiute with python ?

[@kingabdul-latif9774]

I I'm interested in your videos and will like to learn more can you please help me with the name of the software. Thanks

[@chineduegbuonu2634]

Thank you...This was a helpful and clear introduction to Structured Text for beginner.

[@qwezxc23456]

8:06 video challenge. Condition should be OR instead of AND, isn't it ?

[@joshrull3739]

very straightforward, very clear

[@johncarlogonzales3824]

Can I ask what software he is using for ladder logic and structured text simulation?

[@AliDINÇER-d2q]

Thank you so much. This video is so clearly. Very good explanation :)

[@spacexnix]

That's great! It's just amazing. Thank you so much for this video.

[@yssing]

Just found your channel, great video. I was looking at different videos, that I can use to help convince my colleagues why we have to start using ST rather than Ladder.

[@DanielAlor1]

Awesome, thank you so much sir, this is exactly what I was looking for

[@dandeniyagesusilprabath6577]

Such a informative video.. thank you

[@hfe1833]

Modern and updated structured text tutorial

[@huytran7933]

Your video so greate What do you think about array in st language. I think it very helpul. Can you do a video about array type by st language in plc mitsubishi

[@DJRY360]

clear and concise :) many thanks for my intro into ST!

[@Geogrn]

The industrial automation market is changing and Structured Text (ST) is taking over

[@lonewolftech]

No it isn't. Latter is far more convenient, and easier to troubleshoot. Also 98% of companies aren't upgrading their equipment and they aren't paying some engineer to come change all their crap to ST... Its simply not happening!

[@RobotCNC]

Excellent video! Good Job!

[@sidikging2988]

7 :30 directly to the main course

[@evelyndlb]

Thank you!! This was a super helpful and clear introduction to Structured Text

[@jaysonguevarra9336]

Awesome video! Thank you

[@jexaov1863]

What software?

[@rajibpaul7074]

What is the name of this software?

[@Sachinkumar-to3ug]

Great information!! Could you please make video's on b&r motion control. I want to learn about cam profile and how to design cam profile.

[@mphomabaso2405]

Excellent video

[@fabiooliveira2561]

Oh god,too great lessons. tks.

[@pradeepjain4786]

Good morning I want to ledder and stacture text language sir please help me

[@sayedessam3432]

I need more examples to practice anyone have some..?

[@endprg6477]

more please)))

[@olivioferreira2418]

I love this lesson

[@aqqq4097]

U r incredible man

[@sigurdvingelsgaard9466]

Greate video! What do you think is the best way to build a program in terms of st vs ladder? Should everything be st or just the functions/functionblocks maybe? Thanks.

[@7Denial7]

When I was making the allen bradly program for the hydrogen compressor I used both ladder and function Block language, in some sub programs it was more useful to use ladder rather than FBD

[@HussyDeFilippis]

amazing ! thanks for that!!

[@AP-pg6uf]

please check your Ladder diagram Vs Structured Text ?????????????

[@girishgundale4227]

Awsome Video

[@apsp5405]

Great video. Nice and simple. Very understandable for beginners. Big up bro

[@venkateshnayak1176]

Awesomeone video..

[@hectorrocafort1193]

Thanks very useful video! Could you make more about loops? I think it is interesting

[@arielfittipaldi8416]

Hola buen video podrias explicar mas sobre los loops por ejemplo for gracias

[@pacificusmngoma2586]

awesomeness I like Ryan dds Automated Machine Design

[@cascadeanalog320]

Thank you Sir.

[@mcancino4739]

at 8:07 that's wrong. That is OR logic not AND logic

[@adolfonarro924]

Do you have any information on the x20i F10 91

[@ThisisAutomation]

Hi Adolfo - X20IF1091 is an X2X Link Master module which is essentially the IO backplane of the X20 modules. You can find more details on the B&R website: www.br-automation.com/en-gb/products/networks-and-fieldbus-modules/x2x-link/x20if1091/

[@adolfonarro924]

@@ThisisAutomation with your introduction I was able to determine what was wrong with my machine. I will be placing orders for 2 modules that are out. thank you for all your help

[@jeffreymorris1752]

I'm good with structured text (or properly commented CFCs) as long as they're accompanied with SFCs for the sequential stuff. I always think about some poor tech having to troubleshoot at 0200 hrs in a Wyoming blizzard. Structured text by itself just isn't very capable in that regard. You could have all your techs become as fluent in structured text as the engineer who programmed it, but he or she probably has plenty of other training to accomplish and is plenty valuable without becoming a programmer.

[@jeffreymorris1752]

CFCs were an early form of FBDs implemented in the 1980s by Siemens.

[@darthenx2585]

In your first example that you posted to indeed. .... It's an OR statement Not a And statement 🤦🏽‍♂️ Am surprised you didn't correct that 🤔

[@Razvan_Udrea]

Arduino vibes all over the place

[@GeorgeEmperor]

Sorry but in 8:14 is not same in struct you need use “or” and must made else with out1:=false and second out1:=(in1 and in2) too you need “or”

[@V.A.L.T.E.K]

Your video picture do not coresponse to the code. If the code should do the same as picture the it should be like bro: If in1 or in2 the Out1:=true; End_if

[@ylberhoxha1353]

The first example at around 8:10 is an OR logic mate! What the hell

[@dhop9720]

Yea I agree.....I know very little about ST but in Ladder it's an OR so now I'm soooo confused.

[@Aeeeeelex]

The only true outcome: Out1 := In1 OR In2;

[@ksmitty1of1]

Great video! Love the content…. But my god that 1st minute was so cringy 😂

[@jamesp5731]

Auburn.... War Eagle

[@_krazy_198]

Ladder will not be going anywhere. The machines have to be repaired and tuned by people that are not engineers. Ladder is "easy" for them to use even if they rarely look at programs because its based on everyday use. No company will knowingly choose to require an engineer every time a timer needs adjusted.

[@BHBalast]

I think in the future more and more people will be accustomed with some programming language. In the times we live in now it's very beneficial to know ale least a little about machines that provide us the modern way of living. In the future basic programming will be learnt by kids in school so ladder will get obscure, text based language is just superior in terms of functionality and ease of use.

[@lonewolftech]

@@BHBalast Not even close, actually that quite laughable and its obvious you have never worked in industry a day! No company will hire on some smart ass kid that cannot fix their archaic equipment that they WILL NOT update because it works, has worked, and keeps working. This is a fact you all had better learn! Learn latter FIRST, any of this second! Otherwise you're useless to 99% of companies out there! I work in this field I work on a crap load of machinery daily, all of it it latter... even the brand new equipment coming in with 2023 tags..

[@prashanthshetty7741]

❤

[@pradeepjain4786]

Hello sir

[@Techgeekengineer]

Roll Tide 🐘

[@hakuzu88]

Don't know why u say c langage is the next step ?? You proof the contrary in this video , plus both of them work at the same level , it's just the way u will programm it but la ladder is not dead trust me , i work fort smart and mercedes all of process use ladder or logigramm because it's a langage for electrician . To me it's easer to understand the logic langage , ur exemple is pretty simple but if u will do a harder system , by experience ,trust me u will prefer the ladder langage , why ?? Because u just have to put a fonction block to ur line in ladder langage , in c langage u have to define what type of fonction u will use etc . I don't think it's the next step , i think for person who work in industrial company , all of them learned the ladder and all of them will used it bacause it's easer to teach dat and u will do the same result.. It's a question of habit i think .... For the record ;i already used c langage in siemens , still prefer the ladder or logigramm because to me it show u the link between the eletronics and the programmation

[@artantani7948]

what a waste of time. talkie talkie

[@lonewolftech]

I can promise you this if you don't learn latter first and this second you will never find a job in the industry anywhere as everything is ALL on latter. This may be new but its still no where near going to be overtaking latter anytime soon.

[@mohammadbavapoizhithara7132]

Sorry I have small doubt in the rung 006 sorry for the inconvenience 🥲