What is the difference between SCADA and HMI?
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- เผยแพร่เมื่อ 22 พ.ค. 2024
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Today, you will learn the difference between a SCADA system and an HMI. We will talk about the differences as well as the similarities, and also when each is used. There is usually some confusion because of the similarities.
SCADA stands for “Supervisory Control and Data Acquisition.”
These are used for monitoring and controlling large areas, typically a full site or plant.
SCADA systems are a combination of many systems including sensors, RTUs or Remote Terminal Units, and PLCs.
Data from all of these systems is then sent to the central SCADA unit. That SCADA unit has its own HMI. This is why a lot of people get confused and think SCADA and HMI are one and the same.
That HMI or “Human Machine Interface” unit on the SCADA can monitor and control anything that is connected to it. In conclusion, HMI can be part of SCADA but SCADA cannot be part of an HMI. It’s that simple.
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So glad I found your channel!! Amazing content!
Thank you for the clearing up. I work in beverage manufacturing and we have HMIs linked to PLCs to control processes. I'm a student of water and wastewater treatment and this really helps.
That is amazing, Ronnie! Thanks a lot.
A PLC which is controlling a vendor specific piece of equipment in your plant could link to a DCS field station controller (PCU) via say, ProfiNet. This DCS I/O controller (PCU) will also then link to all other field stations and operator stations and thus we have the ability to control, supervise and monitor the entire plant process with DCS redundancy and high speed. But lets say this Plant is only 1 of 5 and they are placed in different locations across the country each with there own DCS system, It's the SCADA system that will then link theses plants and collect there data in a centralized location and store this data on servers, you would also have the ability to view the entire system (all plants) on some form of SCADA operator station, but the information will be sourced from gathered data in the server.
Excellent!!!
I've just subscribed to your channel.
Thanks a lot for your positive feedback, Rafael!
Great information in your vid’s, I’m trying to get better at networking, your videos have been great
Great to hear that! Happy learning
Thanks for sharing
Super video...explained so nicely. Thanks a lot.
Glad you liked it!
great concept. love that
Thank you!
Thank you very much
I wish you explain the main deference between PLC & SCADA & DCS
You are welcome! Have you watched our previous video on the Difference Between PLC and DCS? You can watch it here if you haven't already: th-cam.com/video/iF99iKlDpxA/w-d-xo.html
Great videos. I'll subscribe definitely. Please, keep creating those informative videos! Regards from Indonesia
Happy to hear that! Thank you.
Thanks for your informative videos keep forward
Thanks for watching! :)
Sweet videos excellent information thank you!
Amazing to hear, Javier! Thanks for your support.
Nice content
Appreciate your work 👍
Thanks a ton!
Best TH-cam channel ever
Thank you, Yasser! Glad that you found our channel useful. :)
easy to understand, awesome
Happy to hear! Thank you
Excellent videos please post something related to pid tuning
Hello, this is Allison from Beijing DWIN Technology from China. We are the manufacturer of Android screen, touch panel, Smart LCD display，HMI and MODBUS Communication. And we specialize in this field for 17 years. We hope to get in touch with you. If you are interested, you can contact me through email: yangxi1@dwin.com.cn.
Nicely 🙏explained
GREAT VIDEO!
Thank you!
Thank you
as always a great video
Thanks for watching and for your support! :)
Thank you!
You're very welcome!
Very good video, as usual. I often run into a situation where folks confuse SCADA with a DCS such as DeltaV.
Thank you, Jody! Great to hear your feedback!
Hi I love your videos !! Them look amaizing!! Wich software do you use to do it ? :)
Btw someone else from México ? 🇲🇽
Hi Jessica,
Thanks a lot for sharing your positive feedback with us! Great to hear that. I am actually not sure about this as this is done by our graphic and animation department.
Thank you for this great presentation but please I have a question, these videos posted in youtube are part of the training videos in your web site or there are only posted in youtube
Hi Imad,
Thanks for your compliment! Regarding your question, we do not post our TH-cam videos on our website's course library. Our course library is solely filled with exclusive course videos only accessible for paid subscribers.
Feel free to browse through our course library to view the various topics we cover over there bit.ly/30AVJaR
Hopefully, this answers your question sufficiently. Feel free to reach back out if you have any other questions.
Happy learning!
Thanks for this videos. Am interested in taking handheld training on PLC system.
You're very welcome, Richard! Glad to hear that.
Very nice video
Thank you!
well comparision explained...
Thank you!
So helpfull
Great to hear that!
Many thanks
You're very welcome!
thank you!
You're very welcome!
Can SCADA overwrite a function or a command from the controlling base station, that has been given from a field operator on his responsible PLC or PID (direct field controller) in case of emergencies?
for example, a PLC controlling three pumps has been given a command from the field operator using its HMI, to work on 80% to fast forward the process to meet the job deadline, but from the database stored SCADA has a program for each pump maintenance table, and when working on 80% one of the pumps will not hold for the working time that has been set on its controller.
Can SCADA overwrite the command of 80%? Will, it detects that before the job starts and notify the field operator that this command is a risk? or just record the event for investigation if the pump breaks afterwards.
This all depends on how you program the system. If you need the SCADA to overwrite a command in the field, you can program the system to do this.
Nice video
Really helpful
Keep growing🇮🇳❣️
Thank you!
thanks a lot sir
Most welcome!
Thank you .Very good video. Please, are there any training programs to learn PLC programming?
Thanks for your comment! We certainly do, we have an entire section of course library dedicated to PLC Programming. You can find all our PLC Programming courses over here learn.realpars.com/collections/PLC-programming
Feel free to check it out!
So if I'm understanding this right a SCADA is really a whole system being networked in together which would include a central type PLC (Data Concentrate PLC) which then also has its own HMI to be able to control all those other PLCs remotely through the HMI.
While the word HMI just means the machine screen controls for one local PLC
1:36 Central HMI, just a screen, can control anything. Scada is like an umbrella which includes everything: HMI(central and localized) process controllers like PLC, sensors and actuators.
@@abdulbasit-cn9ek True, but now HMI panels have gotten so sophisticated that they can do the same job.
Helpful
Glad you think so!
Hi, I have graduated automation and control subject but I don't have an experience. So I am thinking to start in instrumentation for now. Then move to learn programming. What do you think is it good start? What do you suggest?
Hi!! What about automation and control did you want to ask?
Hi, thanks a Lot! Can i ask you for a topic? PLC vs RTU PLEASE?
Hey! Sure. Just added this to the list of the future TH-cam videos.
RealPars thanks! Have a nice day.
Today we certainly learned that we have to look for Siemens equipment.
Hello, this is Allison from Beijing DWIN Technology from China. We are the manufacturer of Android screen, touch panel, Smart LCD display，HMI and MODBUS Communication. And we specialize in this field for 17 years. We hope to get in touch with you. If you are interested, you can contact me through email:yangxi1@dwin.com.cn.
So, maybe the DCS will be disappear in the soon future?
Or it's will still in used?
What do you think?
I think both PLC and DCS will be around in the future and they will be improved.
Dcs is best for precise analog control like in refineries or process plants with higher no. Of pid loops so it will always be in need
While scada is more about a centralized software setup whether its a plant or a production line or a city traffic management system
Good SCADA 101
Please will you guys do a course on Rockwell please,because the course you guys have on siemens at Realpars.com is hands down the best course on the internet by far..Please if possible do the same with Rockwell
Hi there,
Thanks a lot! That is a great compliment and a great suggestion. I have gone ahead and forwarded this to our creator team. Thanks for sharing this with us!
Happy learning!
SCADA Base Home automation system
Plz Information or Video
So whats the best opensource alternative for simatic pcs?
If you are referring to PCS7, there is no good open source equivalent that can provide all of the base features of PCS7. You can put together a patchwork of applications and controllers that approximate these features. PLCNext from Phoenix Contact is a good place to start for open source controllers and applications.
Make a video for variable frequency drive... please
Just added your suggestion to our list of future videos for our instructors to consider.
Make videos abt GOOSE Messaging Configuration.
Hi there, thank you for the tip! I will pass your topic request on to our creator team.
Do you have dcs simulator program sir, like plc sim ?
I'm not what you mean by DCS simulator!
@@realpars i mean how to simulate dcs without the device? Because i want to learn about dcs programming sir. can you help to find dcs simulator sir?
Pleae make a video tutorial of water flow meter modbus communication with Siemens plc for data showing in monitor.
Hey Mahmud!
Thanks for your comment and your suggestion. I will pass this on to our course developers!
Thanks for sharing and happy learning!
@@realpars have any video of modbus between metering device and siemens CPU. Please send me the link. It is very much needed for me.
So is it right to say that every DCS's HMI is actually a SCADA systems? Since the DCS's HMI is the supervisory of other control systems'
The DCS itself could be thought of as a SCADA system if there are many remote controllers and I/O. An HMI is part of most all SCADA and DCS systems. HMI's only provide an operator interface to the process, and stand-alone, HMI's are not SCADA systems without other devices, like CPU's, I/O and communication models.
👍
Wow thank you.I am just student, I want know about IIOT ,what can i do ?
And support my channel
You are very welcome!
I need a video for the difference between SCADA and BMS
Hey!
Thanks for your comment and your suggestion. I will pass this on to our course developers!
Thanks for sharing and happy learning!
@@realpars Thanks
I hope there is indonesian subtitles in RealPars's videos.
Hi Edi,
Thanks for your comment! We currently only provide our course videos in English, you are always able to turn on the English subtitles as that might make it a bit easier for you.
Our apologies for any inconvenience!
Happy learning!
how to do the video animation
Hi there, we use Adobe Premiere for our animated videos.
4:29 - Now I started to understand everything
Great! :)
Hi
Upload tutorials of SP3D and SPI Software
No worthy content available on TH-cam
As far as I know, SP3D is for engineering candidates aspiring to establish a career in pipe designing. We are currently more focused on automation engineering concepts. But we may consider your suggestion in the future.