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What is Remote I/O?
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- čas přidán 5. 08. 2024
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In the industrial control world, we use the term I/O often. So, let’s begin our discussion today with an explanation of I/O.
The focus of our discussion will be on Remote I/O, but we’re also going to talk about Local I/O too.
In this video, we’re going to:
- Explain the terms I/O, Local I/O, and Remote I/O
- Explain why Remote I/O is used in industrial applications
- List 2 transmission mediums used to connect between the local PLC and the Remote I/O
- List 2 transmission protocols used to communicate between the local PLC and the Remote I/O
I/O stands for Input/Output.
In the industrial world, I/O refers to any device that transfers data to or from a computer such as a PLC.
For our discussion, we’ll refer to these I/O devices as I/O Modules.
Field Devices such as sensors and actuators are connected to the I/O modules.
The sensor signal representing a process variable such as liquid flow is converted by an Input I/O module and stored in the PLC memory.
The actuator receives an operating signal from an Output I/O module.
Local I/O refers to I/O modules that are housed in the same cabinet and likely connected to the controller backplane in the PLC rack.
Remote I/O simply means that the I/O module is at a remote place physically located a distance from the control PLC.
A remote I/O module will speak to the PLC via an Adaptor Module connected to the controller backplane in the PLC rack.
Why do we use Remote I/O?
In some industrial applications, it’s not possible to have a PLC with Local I/O Modules near the field devices because of the harsh environment.
Remote I/O is a solution when you want to place I/O modules close to the field devices in order to eliminate long lengths of multi-conductor cable.
With Remote I/O, signals can be received from far away sensors and control signals can be sent long distances to control valves, motors, and other final actuators.
Signals can be sent any distance on a high-speed medium such as twisted-pair wires and fiber optics using a variety of transmission protocols such as Ethernet and Profibus.
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#RealPars #Remote_IO #PLC
I absolutely love all the information/videos you guys put out!! I've been an electrician for over 25 years, & I never stop learning!! Awesome Trade & you guys definitely help connect the dots for us industrial guys!! Thank You!!
Hi Bruce,
Thanks a lot for your kind compliment! We are always extremely happy to hear such positive feedback! If you ever have any questions, feel free to reach out to us. Happy learning!
Your channel has helped so much with my transition between industries. Great videos
Glad to hear that, Sevis! Happy learning
Thanks for such a great explanation in such a simple manner.
You're very welcome, Arsalan! Happy to hear that it is helpful to you.
You deserve a big thank 📢REALPARS
Thanks for your support, Muhammad! We truly appreciate it!
Great explanation 👌👍
Thank you very much. It's very cool when you repeat the information at the end of the video once again for fixing. It helps a lot. Thank you for this approach. Very very cool!
Glad it helped! You're very welcome!
Thank you for the very useful training videos, Realpars 👏👏👏
You are very welcome, thanks for sharing!
Where are you from?
Thank you very much and realpars is very useful.
suggestions: process monitoring and fault diagnosis.
plant optimization.
Hi Musab!
Thanks for your comment and your suggestion. I will pass this on to our course developers!
Thanks for sharing and happy learning!
Informative videos regarding automation
Many thanks for this wonderful information
You're more than welcome, Athil!
i hope you makes a detailed tutorials on communications between PLC 's and ET's one day because this is what Realpars courses miss .
thank you very much for you Realpars team . i Which you take my recommendation under consideration.
Thanks for your feedback! I will surely pass this on to our course creators.
Thanks again for sharing and happy learning!
Thank you RealPars
You are very welcome, Mohammed!
Hi RealPars, does remote I/O module transmits data slower compared to local I/O module? Anyway, your videos are truly informative.
Does every PLC has that adapter built in or one has to install it separately?
If the local IO Module has chassis #1 (example) slots 1-4. Would remote IO #1 be numbered slots 5-7 and remote IO #2 be numbered slots 8-10?
how long in length we can use cables from modules to the sensor, maximum length? type of cable that actually using for analog and digital are the same ? and its size possible ?
Is LOCAL BOX(such as LCB,LIB, SVB) like remote I/O?
Great video!!
Thanks!
Thanku for this helpfull video..
You're more than welcome!
Thank you
superb.........
Can you have both the local I/O and remote I/O in the same cabinet?
Hey engineers can u suggest me the flow meter which is more suitable for fluids like diesel and gasoline ?
Great video RealPars 👌🏻👌🏻👌🏻
Please, make a video on IPS system if it's possible 🌹🌹
Hey!
Thanks for your comment and your suggestion. I will pass this on to our course developers!
Thanks for sharing and happy learning!
Thank you for nice video
You are very welcome!
Hi Real pars, all of your videos are amazing to understand to me.I came to ask you a question that do you have any videos of the use and applications of barriers? I searched but i didn't got anything related to that, can you please help me to know about that ?
Intrinsic safety barriers are specialized devices that have a very specific, and important, purpose in automation. I will pass along your suggestion to our course developers for consideration for a future video. Thank you for the suggestion, and we appreciate your support.
Great, thanks
You are very welcome!
Gteat. Thanks à lot. Waitig for more informations about the configuration of an ET 200
Happy to hear that! Thanks for your support.
Amazinggggggggggggggggg! very clearly
Great to hear that! Happy learning.
Thank you , Your videos are always helping and gives motivation to build my career
That is amazing to hear, Ganesh! We hope you will have a splendid career, great to hear that RealPars is a part of that journey!
Thanks for this video
Can you please make video on grounding fault detection in RTU as this is one of the major reason for AO card failure
Hey Prakash!
Thanks for your comment and your suggestion. I will pass this on to our course developers!
Thanks for sharing and happy learning!
Hi there. What if the Remote I/O and the PLC are quite a long distance away (4km). What would you recommend for the communication interface? You mentioned fibre optics as an option. Are there any other options/solutions we could use? Thank you
Hello Kosidinna Umeigbo,
To answer your question, depending on the type of PLC you are using, you will have to refer to their technical manuals. But to help you with your question, I will use Siemens PLC as an example. Using a Siemens switch like a Scalance brand model “X208-2-LD- FO” is a fiber optic device. Siemens claims you can go as far as 26km distance for remote IO’s. But this is not financially a good option. In normal engineering requirements, most remote IO is within 100 meters, and Profibus, ProfiNet, or industrial ethernet is used either with wire cables or fiber optics.
Happy learning!
So I have come across an IEEE standard called 802.11b and I want to ask: Is it still in use?
It is very much still in use! IEEE 802.11b is the base standard for wireless ethernet communication. It was originally called WiFi and has been extended many times, e.g., IEEE 802.11n, but it is still a valid standard.
Thank you. We need an explanation of Asi
Thanks for sharing your suggestion with us! I have sent this over to our course developers.
Happy learning!
Thanks
You're very welcome!
Great explication , can you add a video for the Distributed I/O , and the defirence between Distributed I/O and Remote I/O ,please .
@@atulmishrachdi I know that Bro , I want the answers to my questions , that's all 😉
Hey Hichem!
Thanks for your comment and your suggestion. I will pass this on to our course developers!
Thanks for sharing and happy learning!
Thank you RealPars
Whats the disadvantages of remote I/O ?
Hi Maryem,
Thanks for your comment!
This would be a great topic to create a new video course around. I will happily pass this on to our course developers for possible future video courses.
Thanks again for sharing and happy learning!
Are there wireless remote I/O's saying for an example: having A and B side. Where A side of I/O is wired to the Machine sensors/actuators and B side I/O is wired to the PLC. And they get separated by a significant distance. A&B communicate wireless to transmit data?
There are indeed. And many more entering the marketplace.
Dear realpars.
Please make a video for how to take backup of siemens wincc flexible hmi and simatic wincc scada.....thank u for ur support which makes our future bright
Hey Manish!
Thanks for your comment and your suggestion. I will pass this on to our course developers!
Thanks for sharing and happy learning!
Thank you very much!!!!!
Can I Ask for a subject? It's about the ANSI 12.8 (Alarms efficiency)
Hey!
Thanks for your comment and your suggestion. I will pass this on to our course developers!
Thanks for sharing and happy learning!
thank you your video. I suggest what is the PTO
Thanks for sharing your suggestion with us! I have sent this over to our course developers.
Happy learning!
Nice video. Could you make a video explaining OPC tags.
Hey!
Thanks for your comment and your suggestion. I will pass this on to our course developers!
Thanks for sharing and happy learning!
@@realpars 🙌🏻 Thank you so much!!
thanks. I can happily share my experience with Beckhoff components if you like
My name is Ganesh Naik from India I just want to know about Industrial PC
@@ganeshnaik9463
Industrial PC (IPC) in Beckhoff is like a normal computer with the ability to stand in harsh industrial environments. it has an intel processor and windows operation system (windows 10). we need to install visual studio in which we can work with TwinCAT, C++ or even MATLAB. we have several choices for programming. for example, if a company has its own codes on C++ for the robots or CNC machines etc, they can easily implement Beckhoff IPCs. therefore you don't have to learn Structure text or Ladder diagram language (the languages we use for programming Beckhoff or other PLCs) and you can work with C++ or even visual basic.
@@rasoulsadeghi8635 Is there any IPC online learning CZcams channel like real pars and also thanx for answering
We need an
example from the field regarding remote I/O please
Hey!
Thanks for your comment and your suggestion. I will pass this on to our course developers!
Thanks for sharing and happy learning!
I am a fans of realpars,But in China I cannot use the youtube, can I upload the video of realpairs on youtube to Bilibil to help more people?Thank you very much and realpars is very useful.
Hi Chao,
Great to hear that you are enjoying our content!
You cannot upload any of our RealPars content elsewhere. This will go against our company policy.
Thanks for your understanding.
Can we connect the remote I/O via wifi ?
Yes! For Siemens products, the SCALANCE W series of WiFi adapters can be used for an individual rack or a whole cabinet of I/O. There are some engineering and network planning tasks you need to do, but implementation is not difficult. assets.new.siemens.com/siemens/assets/api/uuid:64537871-7360-4dfd-8cc2-0912fd01b4ab/iwlan-making-the-most-of-air-en.pdf
Whats the difference between remote and distributed IOs?
Remote I/O is comprised of racks and modules that are directly connected by multi-conductor cables to the rack that contains the PLC processor. Usually, the number of these racks is limited to a small number (2 or 3). Distributed I/O is racks and modules are connected by a communication protocol over a communications cable, like Profibus DP. As such, any CPU on the network can potentially access the I/O rack, and there can be as many racks as there are available node numbers.
@@realpars So the only difference is communication protocol and number of nodes?
👍
😍😍😍😍😍
Then, I/O Link is a remote I/O ?
Thank you for your question! In the video, we discussed two types of I/O: the I/O located in the same rack as the PLC controller and other cards, and remote I/O, which we mount next to the devices and connect using a communication cable like Cat 5 or fiber optics. This cable connects to a communication card in the main CPU rack and another in the remote I/O rack, streamlining installation and saving both time and money. This setup mirrors the principles behind telephone wiring communication. If you'd like to learn more about remote I/O, here's a link for further reading www.antaira.com/Blog-Understanding-the-Basics-of-Remote-IO.
Happy learning!
Is it IO that is remote?
Yes, Remote I/O refers to the physical I/O interface (racks, cards, terminal connections) being remote from the CPU.
RealPars sorry guys that was a joke, us SCADA techs have terrible jokes 🤪