IO-Link: What Is It & How It Works

Shawn Tierney meets up with Michael Bowne of PI to learn what IO-Link is, how it works, and when to use it in this episode of The Automation Podcast.

For any links related to this episode, check out the “Show Notes” located below the video.

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Shawn Tierney (Host): Thank you for tuning back in to the automation podcast. My name is Shawn Tierney from Insights in Automation. And this week on the show, we have a special guest, somebody who hasn’t been on in four years. We have Michael Bone from PI. They’re the folks who manage technologies like PROFINET and IO Link.

And Michael’s come on this week to talk specifically about IO Link. We’re gonna talk about what it is. We’re gonna talk about when you should use it, and we’re gonna talk about the technical details of IO Link, like, all the things, like, engineering minds like to know about. So I think you guys are gonna enjoy this. It took about two to three hours to edit this one, and I really enjoyed going back through it.

You know, we recorded it, I think, four weeks ago. So I hadn’t seen it in four weeks, but I really did enjoy it. I really think you guys will enjoy it too. And that brings up another point. Organizations like PI and ISA and other organizations, they’re not vendors.

They don’t sell stuff. Right? And so this episode is not sponsored by a vendor. And, you know, as I was going through it yesterday, I was like, you know, there’s a lot of great slides in here. I wanna share it with the public.

So I’ve decided to sponsor this episode myself, and I’ll use this as an opportunity to tell you a little bit about my company and the automation blog, the automation school, and the content I have planned to release this fall, including content on these products right here, all focused on IO Link. And I just actually did a live stream with these, products in front of me. I’ll be doing more tomorrow, and I’ll be adding lessons to my, courses as well on these products. So in any case, but before we get to that, let’s go ahead and jump right into the show and hear from Michael and learn all about IO Link. I wanna welcome back Michael to the show.

It has been four years. He was last on in podcast 76, back in September 2021. So just going on four years. Michael, thank you for coming back on the show. If you could, a lot of people may not remember four years ago.

Mhmm. So before we jump into your presentation, which which I am so excited about talking about IO Link again. But before we jump into that, could you please tell me a little bit about yourself and a little

Michael Bowne (PI): bit about PI? Yeah. Sure. First of all, my pleasure, to be back on on the podcast. It was a lot, a lot of fun.

I remember that back in in 2021, and, I’m glad to be be back doing it again. I started with PI North America in 2011 as the technical marketing director. And since 2016, I’ve been the executive director running the show and chairman of the board since last year. I, have the, let’s say, pleasure to serve as the deputy chairman of PI on a global scale since 2015, and I come from a prior to working for PI, I worked for a sensor manufacturer who had some interfaces on there that that brought me an introduct to to Profibus and Profinet. And before that, I studied, physics and and math at at Penn State University.

Just, really quick for those. I’m I’m sure many of you are familiar with with PI, but, it was started in the late eighties. Half a dozen companies and universities got together, and they wrote the PROFIBUS spec, and that evolved into the into into PROFIBUS DP and PROFIBUS PA for process automation in the early two thousands. PROFINET came under the umbrella. And the reason I bring all this up is because there are some newer technologies under our umbrella that I I think the audience might wanna know about.

Of course, EyeLink is is the one that we’ll talk about today, and that was in 02/2009. But there are some others like Umlocks, which is a location tracking standard. There’s one called MTP, module type package, NOAA, NAMR open architecture, also under our umbrella. And, basically, what we do is promote, maintain, write the specs, turn them into standards, and the work on those specs is done in working groups, which are staffed by volunteers, engineers from member companies. They donate their time to to develop the specs, for these technologies we have under our umbrella.

And we’re a little bit unique in that we’re decentralized. So we have competence centers and test labs and training centers located throughout the world. It’s not all just in one headquarter kind of place, and they’re all independent. But they have a contract or quality of services agreement with PI that says, hey. If you have a question about the technologies, go to a competent center.

If you want further training, go to a training center. If you want to to test the device, go to a test lab. And then they are all working with regional PI associations of which we PI North America is one of them. We were founded in 1994 by a guy by the name of Mike Bryant. At that time, we were called Probibus Trade Organization.

And we are the and now I didn’t come up with this this name. We are the North American Rio League. This is a an IO Link designation, a regional IO Link interest group, which means that we have a a separate contract and and quality of services agreement with the IO Link community to to promote and and work with members, specifically for IO Link here in in North America. And we’re nonprofit, member supported. I got nothing.

So you’re talking about products and and and stuff at the beginning. I got nothing to sell today. We’re we’re working solely on on technology.

Shawn Tierney (Host): You know, I do wanna throw out there, though, you have a great update every month about all the new products that fall in the buckets of IO Link, PROFINET, PROFIBUS, and a lot of those new products across our IO Link. So while they may not have products of their own, they do keep the, industry up to date on who’s joining up and signing up, for these new these you know, the jump on board and release new products that, that, you know, meet these specifications. And you know what? Maybe you’re not using PROFINET because you’re using brand x or y. You still probably use an IO Link.

So Oh, that’s for sure. Very interesting very interesting updates that you publish every month and, as a blog. And, I know when I was doing the news for a couple years, I would always, go to your site to look for new updates.

Michael Bowne (PI): Cool. Yeah. Yeah. I guess, I got a slide on that at the end, but the the you’re referring to the, the PROFINews.

Shawn Tierney (Host): Yes. The PROFINews. Yeah.

Michael Bowne (PI): Yeah. That’s a that’s that’s been a baby and a labor of love, for a while now. And and, oh, man, it’s it’s it’s incredible because every month, the most when we track this kind of stuff, obviously, the most popular article is the new products. Well, because that’s what, right, that’s what people want is the stuff they can buy, the stuff they can use. Yeah.

Yeah. That’s and we got another one coming out next week, and every month, we we push that out, and it’s always half a dozen or a dozen new products, half of which are are IO Link. I mean, it’s just growing like crazy.

Shawn Tierney (Host): Yeah. And you guys have had some good articles. I think you had a great series, and I’m now I’m stretching it. So stretching the old memory here. I thought you had a great series on on, MTP, which I really enjoyed.

Did did I remember that correctly?

Michael Bowne (PI): Yeah. We we try and, you know, we try and get some editorial content in there. It’s it calls it falls into, like, three main buckets. What’s new products? What are new trainings and events that are coming up?

And then and then some editorial content. I think I think what we’re driving at is I think we need to do maybe an MTP podcast here at some point in the down the road.

Shawn Tierney (Host): Probably. Yeah. Down the road. Definitely. Definitely.

I I’m still you know, I still have a very casual understanding of it. But, let me throw it back to you because I kinda jumped in and interrupted your your your, update.

Michael Bowne (PI): No. It’s good. It saves it saves us at the end when when that slide, we can just just jump over it. Now we’ve we’ve got it covered, and it’s and it’s an and it’s an important one. But you kinda you kinda gave me a nice lead into the to the next one, which talks about, the Ireland community.

And I’ll start from the bottom, work my way up as being fieldbus independent.

Shawn Tierney (Host): I just wanna break in here for a moment and thank you folks in the audience who’ve signed up for my membership program. Really, really appreciate you all. Eighteen months ago, after reviewing ten plus years of being on YouTube, yo