CODESYS: SFC programming example- Traffic light control in the intersection

If you want to watch the videos in order, download the up-to-date version of the road map from the pinned comment of the corresponding video: • CODESYS: A road map fo...
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In this video, you will learn how to develop a PLC program using Sequential Function Chart (SFC) programming language. Creating the project, adding Steps and Transitions, creating Parallel branches, Adding different types of Actions, and determining a background image in the visualization are covered in this video. Everything is explained through the traffic light control system at an intersection.

[@shazabrahim5208]

Hi Tohid, great videos. But are you aware of the very loud and distracting sound that is overlaid on your presentation? It would be so good to remove that music.

[@TohidAlizadeh]

Thanks for the feedback! I am preparing the version without background music and will let you know as soon as it gets ready.

[@shazabrahim5208]

Hello Tohid. Thats great news.

[@TohidAlizadeh]

I just uploaded the one without music. Thanks again for your feedback!

[@serhioromano]

I have a little bit more complicated SFC. That one is metal washer with different chemicals. And in one step error may occur like for example level of chemicals in a tank lower than allowed. I use SFCPause to pause SFC. But unfortunately when SFCPause is set, timers continue to count. I mean the transitions are not done, but Ton continue to count. For example I enabled SFCPause when timer was T#2s and released it in 5s. Then timer after release will be T#7s. It does not show timer running while SFCPause but it continue to run.

[@TohidAlizadeh]

I am a bit busy these days, I will write about this ASAP.

[@serhioromano]

Tohid Alizadeh I did it actually. But i did not use SFCPause, but I used my custom Pause input variable. With that one everything works. I save value of times on pause and resume after pause released.

[@TohidAlizadeh]

Sergey Romanov Good to hear that you have found a solution.

[@hannagantimothyp]

What traffic light simulation program is being utilized in this video ?

[@omidmoradtalab8822]

Hi. Thanks to your Tutorial. It will be much appreciated if you can remove background music. Thanks

[@TohidAlizadeh]

Hi Omid. Thanks for your feedback. Here you can see the same video without background music. kzbin.info/www/bejne/g3itpmaYZp2qiM0

[@heberhart61]

How were the 2 timers (TON_0.Q and TON_1.Q) added at the end ?

[@goroman3747]

Ok But why didn't you use like a DRUM function (in Siemens TIA Portal or Schneider Unity Pro XL or a SQO function in Rsloxgix) for progromming a repetitive sequence ...It's better

[@TohidAlizadeh]

Well, it could be another solution, however, here I just wanted to show an example of using SFC programming language, as a standard PLC language.

[@user-dc9qx5ij3v]

How did you change the background? Where did you put the image?

[@TohidAlizadeh]

Please have a look at this video: kzbin.info/www/bejne/n2Svn6J7pbWog8U

[@matiasgreenwood4260]

How do I reset the "TON_0.Q"? Because I tried but when continuos to the other steps my "TON_0.Q" stays whit the TRUE signal.

[@TohidAlizadeh]

As soon as the input to the timer goes down the output goes down to zero. You don't need to reset it

[@realcyan]

your videos are great but the backgroundmusic is so annoying

[@TohidAlizadeh]

I will prepare the one without background music and update you soon!

[@realcyan]

That would be great. Tranks a lot :-)

[@TohidAlizadeh]

Check the link in the top most comment, please!

[@000Nishith]

Hi Tohid, I'm working on some codesys program and I have some query which I don't understand how to solve. Can you share me your email id so we can discuss. Thanks.

[@TohidAlizadeh]

Hi there, Here is my email address: [e-mail]. I am quite busy these days, so please do not expect too much help, but I will try my best.

[@TohidAlizadeh]

Here is the same video without the background music! Sorry for that, and thanks a lot for the feedback! kzbin.info/www/bejne/g3itpmaYZp2qiM0