--- title: OptoBlog | Terry Orchard description: Terry is a UC Irvine alumnus that works in technical marketing and focuses on development and content creation. When he's not at the computer he enjoys spending time with his family and pets, flying drones, and working on yo-yo tricks. --- - [Log in](https://www.opto22.com/logon?returnurl=%2f) - [Register](https://www.opto22.com/Special-Pages/Logon.aspx) - [Your Cart](https://www.opto22.com/Checkout/Shopping-Cart) - [Contact Us](https://www.opto22.com/support/contact-us) [![Opto 22 Logo](https://blog.opto22.com/hubfs/opto22_lightsilvergradient_800px.png "Opto 22 Logo")](https://www.opto22.com) - [Products](https://www.opto22.com/products) - [What Do You Want to Do?](https://www.opto22.com/products/what-do-you-want-to-do) - [groov RIO](https://www.opto22.com/products/groov-rio) - [groov EPIC System](https://www.opto22.com/products/groov-epic-system) - [Case Studies](https://www.opto22.com/products/groov-case-studies) - [Product Selector](https://www.opto22.com/products/product-selector) - [Product Families](https://www.opto22.com/products/product-families) - [IIoT System Architecture](https://www.opto22.com/support/resources-tools/demos/groov-epic-groov-rio-architecture) - 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[System Configurator](https://www.opto22.com/products/system-configurator) - [Support](https://www.opto22.com/support) - [Manage groov](https://www.opto22.com/logon?returnurl=%2fmy-opto%2fmanage-groov) - [Documents](https://www.opto22.com/Support/Resources-Tools?rt=59) - [Downloads](https://www.opto22.com/Support/Resources-Tools?rt=68) - [Videos](https://www.opto22.com/Support/Videos) - [KnowledgeBase](https://www.opto22.com/Support/Resources-Tools?rt=67) - [Training](https://www.opto22.com/support/training-options) - [Troubleshooting](https://www.opto22.com/support/troubleshooting) - [Image Library](https://www.opto22.com/support/resources-tools/image-library-svg-editors) - [Developers](https://developer.opto22.com/) - [Talk to an Engineer](https://www.opto22.com/support/talk-to-an-engineer) - [Contact Us](https://www.opto22.com/support/contact-us) - [Warranties](https://www.opto22.com/support/warranties) - [Agency Approvals/Compliance](https://www.opto22.com/support/agency-approvals) - 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[Education Partnerships](https://info.opto22.com/partnering-in-education) - [Opto Blog](https://blog.opto22.com/) - [Opto Forums](http://forums.opto22.com/) - [Events](https://www.opto22.com/community/events) - [Articles](https://www.opto22.com/articles) - [Log In](https://www.opto22.com/logon) - [Register](https://www.opto22.com/Special-Pages/Logon.aspx) - [Your Cart](https://www.opto22.com/Checkout/Shopping-Cart) - [Contact Us](https://www.opto22.com/support/contact-us)   # OptoBlog # OptoBlog ## Terry Orchard Terry is a UC Irvine alumnus that works in technical marketing and focuses on development and content creation. When he's not at the computer he enjoys spending time with his family and pets, flying drones, and working on yo-yo tricks. ### Recent Posts ## [Top OptoForum posts of 2025](https://blog.opto22.com/optoblog/top-optoforum-posts-of-2025) Posted by [Terry Orchard](https://blog.opto22.com/optoblog/author/terry-orchard) on Jan 7, 2026, 7:35:35 AM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/social-suggested-images/blog.opto22.comhubfssocial-suggested-imagesblog.opto22.comhubfsOptoForums-500-3-1.png)](https://blog.opto22.com/optoblog/top-optoforum-posts-of-2025) ### Learn from fellow customers and experts in last year's OptoForums community discussions. It's already time to reflect on another year, and as always, we want to share the most sought-after resources with you from the factory-supported OptoForums. You’ll see the OptoForums mentioned here on the blog from time to time, and that's for good reason. The forums offer valuable technical advice, sample code, product feature discussions, and firmware release previews that you can't find anywhere else. Read on for access to the most popular discussions, topics, and tips from the past year. [Read More](https://blog.opto22.com/optoblog/top-optoforum-posts-of-2025) 0 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/top-optoforum-posts-of-2025#comments-listing) Topics: [Node-RED](https://blog.opto22.com/optoblog/topic/node-red), [groov EPIC](https://blog.opto22.com/optoblog/topic/groov-epic), [groov RIO](https://blog.opto22.com/optoblog/topic/groov-rio), [OptoForum](https://blog.opto22.com/optoblog/topic/optoforum) ## [What you should know about Node-RED 4.0](https://blog.opto22.com/optoblog/what-you-should-know-about-node-red-4.0) Posted by [Terry Orchard](https://blog.opto22.com/optoblog/author/terry-orchard) on Aug 6, 2025, 7:42:25 AM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/social-suggested-images/node-red-cropped-270x193-1-1.jpg)](https://blog.opto22.com/optoblog/what-you-should-know-about-node-red-4.0) ### Hear about essential Node-RED 4.0.2 updates that you'll find in the latest *groov* EPIC and RIO version 4.0 firmware. Included in [*groov* EPIC](https://www.opto22.com/products/groov-epic-system) and [*groov* RIO](https://www.opto22.com/products/groov-rio) is Node-RED, an open-source software program you can use to wire together devices, databases, cloud applications, and APIs (application program interfaces) with simple logic flows. Are you using Node-RED in your current projects? Curious to see if the latest version of Node-RED has updates that could affect your applications? Read on to see what technical updates to expect and what changes you'll want to take advantage of right away. [Read More](https://blog.opto22.com/optoblog/what-you-should-know-about-node-red-4.0) 1 Comment [Click here to read/write comments](https://blog.opto22.com/optoblog/what-you-should-know-about-node-red-4.0#comments-listing) Topics: [Updates](https://blog.opto22.com/optoblog/topic/updates), [Node-RED](https://blog.opto22.com/optoblog/topic/node-red), [groov EPIC](https://blog.opto22.com/optoblog/topic/groov-epic), [groov RIO](https://blog.opto22.com/optoblog/topic/groov-rio) ## [New video: Remote Access to groov Devices using Open VPN](https://blog.opto22.com/optoblog/new-video-remote-access-to-groov-devices-using-open-vpn) Posted by [Terry Orchard](https://blog.opto22.com/optoblog/author/terry-orchard) on Mar 19, 2025, 9:39:56 AM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/VPNVideoThumbnail.jpg)](https://blog.opto22.com/optoblog/new-video-remote-access-to-groov-devices-using-open-vpn) ### Learn how setting up VPN (virtual private network) configurations can help you securely connect to your remote devices. In our latest video [VPN configuration on *groov* devices](https://www.opto22.com/support/resources-tools/videos/video-how-to-use-a-vpn-to-securely-connect-to-groo) using OpenVPN, you'll get a breakdown of the high-level configuration of VPNs and also a detailed walkthrough of the process. But first, in this blog post, let's discuss the pain of secure remote connectivity and the gains that setting up a VPN can bring. [Read More](https://blog.opto22.com/optoblog/new-video-remote-access-to-groov-devices-using-open-vpn) 0 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/new-video-remote-access-to-groov-devices-using-open-vpn#comments-listing) Topics: [groov EPIC](https://blog.opto22.com/optoblog/topic/groov-epic), [cybersecurity](https://blog.opto22.com/optoblog/topic/cybersecurity), [EPIC Security](https://blog.opto22.com/optoblog/topic/epic-security), [OpenVPN](https://blog.opto22.com/optoblog/topic/openvpn) ## [ICC Build-a-Thon: How did we build those demo models?](https://blog.opto22.com/optoblog/icc-build-a-thon-how-did-we-build-those-demo-models) Posted by [Terry Orchard](https://blog.opto22.com/optoblog/author/terry-orchard) on Oct 9, 2024, 8:00:00 AM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/BaTBlog%201c.png)](https://blog.opto22.com/optoblog/icc-build-a-thon-how-did-we-build-those-demo-models) ### Get a behind-the-scenes look at Opto 22's journey from render to reality for the demo panels built specifically for the Ignition Community Conference Build-a-Thon. In early 2022, Benson Hougland (Opto 22 VP of Marketing and Product Strategy) called the Opto team together and said “I’ve got a great project for us, and you're going to love it...the ICC Build-a-Thon!” Undeniably "the premier event in competitive SCADA," the ICC Build-a-Thon is the major highlight of the annual [Inductive Community Conference (ICC)](https://icc.inductiveautomation.com/), organized by [Inductive Automation](https://inductiveautomation.com/) and held every year in Folsom, CA. It is a showcase and live competition for system integrators who use Ignition software, a platform for building industrial automation and control systems. [Read More](https://blog.opto22.com/optoblog/icc-build-a-thon-how-did-we-build-those-demo-models) 2 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/icc-build-a-thon-how-did-we-build-those-demo-models#comments-listing) Topics: [Events & conferences](https://blog.opto22.com/optoblog/topic/events-conferences), [groov EPIC](https://blog.opto22.com/optoblog/topic/groov-epic), [Ignition](https://blog.opto22.com/optoblog/topic/ignition), [Ignition Community Conference](https://blog.opto22.com/optoblog/topic/ignition-community-conference), [Build-a-Thon](https://blog.opto22.com/optoblog/topic/build-a-thon) ## [What's new in Node-RED v3.1.7](https://blog.opto22.com/optoblog/whats-new-in-node-red-v3.1.7) Posted by [Terry Orchard](https://blog.opto22.com/optoblog/author/terry-orchard) on May 24, 2024, 4:23:43 PM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/NR317blog2.png)](https://blog.opto22.com/optoblog/whats-new-in-node-red-v3.1.7) ### Learn about some of the changes and benefits of Node-RED 3.1.7 included with the recent *groov* EPIC 3.6 firmware release. Node-RED 3.1.7 has many useful new features and quality-of-life improvements—mainly to the editor itself. A great example is that the flow tabs at the top of the editor now indicate when they contain a change that has not been deployed. This simple addition clarifies what will be restarted when you choose among deploying modified nodes, modified flows, or a full deploy. Let's talk about what other welcome additions you'll find in Node-RED in the latest 3.6 firmware release of *groov* EPIC. [Read More](https://blog.opto22.com/optoblog/whats-new-in-node-red-v3.1.7) 0 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/whats-new-in-node-red-v3.1.7#comments-listing) Topics: [Updates](https://blog.opto22.com/optoblog/topic/updates), [Node-RED](https://blog.opto22.com/optoblog/topic/node-red), [groov EPIC](https://blog.opto22.com/optoblog/topic/groov-epic) ## [The cybersecurity role of a client or server](https://blog.opto22.com/optoblog/the-cybersecurity-role-of-a-client-or-server) Posted by [Terry Orchard](https://blog.opto22.com/optoblog/author/terry-orchard) on Feb 6, 2024, 12:03:01 PM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/Terry_ClientServer1.jpg)](https://blog.opto22.com/optoblog/the-cybersecurity-role-of-a-client-or-server) ### Beyond data transactions, understanding the relationship between clients and servers plays a significant role in cybersecurity. What makes a device fill the role of a server or client? And, more importantly, how can you use that information to strengthen your network security and mitigate insecurities? The best place to start with this topic is to loosely define what makes software act as a server or as a client. But throughout this blog, keep in mind that the two are not mutually exclusive—some devices can be both a server and a client. When playing the role of a server the key trait is that the server device is always *listening*. [Read More](https://blog.opto22.com/optoblog/the-cybersecurity-role-of-a-client-or-server) 4 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/the-cybersecurity-role-of-a-client-or-server#comments-listing) Topics: [groov EPIC](https://blog.opto22.com/optoblog/topic/groov-epic), [cybersecurity](https://blog.opto22.com/optoblog/topic/cybersecurity) ## [What is OptoMMP?](https://blog.opto22.com/optoblog/what-is-optommp) Posted by [Terry Orchard](https://blog.opto22.com/optoblog/author/terry-orchard) on Nov 16, 2023, 9:17:27 AM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/OptoMMPGuide.png)](https://blog.opto22.com/optoblog/what-is-optommp) ### Learn more about the Opto Memory Map Protocol—a powerful method of interacting with Opto 22 controllers OptoMMP works with everything from SNAP PAC brains to the latest *groov* products. Let's go over some of the basics about what OptoMMP is and how it works. In my [last blog post](https://blog.opto22.com/optoblog/optommp-tools-in-groov-manage) I showed how easy it can be to work with OptoMMP using tools built right into *groov* Manage. To add to that resource, this follow up provides an overview about what OptoMMP is, how it works, and why you might want to make use of it. [Read More](https://blog.opto22.com/optoblog/what-is-optommp) 1 Comment [Click here to read/write comments](https://blog.opto22.com/optoblog/what-is-optommp#comments-listing) Topics: [groov EPIC](https://blog.opto22.com/optoblog/topic/groov-epic), [groov Manage](https://blog.opto22.com/optoblog/topic/groov-manage), [snap pac](https://blog.opto22.com/optoblog/topic/snap-pac), [groov RIO](https://blog.opto22.com/optoblog/topic/groov-rio), [OptoMMP](https://blog.opto22.com/optoblog/topic/optommp) ## [OptoMMP Tools in groov Manage](https://blog.opto22.com/optoblog/optommp-tools-in-groov-manage) Posted by [Terry Orchard](https://blog.opto22.com/optoblog/author/terry-orchard) on Oct 5, 2023, 9:20:36 AM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/OptoMMPblog-IOservices.png)](https://blog.opto22.com/optoblog/optommp-tools-in-groov-manage) ### This tech tip post covers some *groov* Manage tools that make the Opto Memory Map Protocol easier to use. The Opto Memory Map Protocol (OptoMMP) is a powerful method of interacting with Opto controllers, everything from a PAC brain to the latest *groov* RIO—however, it's often overlooked and underused. This blog post covers some tools built right in to *groov* Manage that make OptoMMP more approachable, easier to implement, and straightforward to debug. [Read More](https://blog.opto22.com/optoblog/optommp-tools-in-groov-manage) 0 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/optommp-tools-in-groov-manage#comments-listing) Topics: [Node-RED](https://blog.opto22.com/optoblog/topic/node-red), [groov EPIC](https://blog.opto22.com/optoblog/topic/groov-epic), [groov Manage](https://blog.opto22.com/optoblog/topic/groov-manage), [groov RIO](https://blog.opto22.com/optoblog/topic/groov-rio), [OptoMMP](https://blog.opto22.com/optoblog/topic/optommp) ## [What's new in Node-RED v3.0](https://blog.opto22.com/optoblog/whats-new-in-node-red-v3.0) Posted by [Terry Orchard](https://blog.opto22.com/optoblog/author/terry-orchard) on Aug 2, 2023, 10:29:21 AM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/NodeREDWelcome30.png)](https://blog.opto22.com/optoblog/whats-new-in-node-red-v3.0) ### With the latest [*groov* 3.5 firmware](https://blog.opto22.com/optoblog/groov-epic-firmware-3.5-is-here) update comes another new version of Node-RED, its 3.0 milestone release. Get ready to see what's new in Node-RED when you update to *groov* EPIC 3.5. This new version includes all the additions of the 3.0.2 software, the most recently available at the time of writing, and node v14.20.0 and npm 6.14.17 package updates as well. Let's take a look. [Read More](https://blog.opto22.com/optoblog/whats-new-in-node-red-v3.0) 2 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/whats-new-in-node-red-v3.0#comments-listing) Topics: [Updates](https://blog.opto22.com/optoblog/topic/updates), [Node-RED](https://blog.opto22.com/optoblog/topic/node-red), [groov EPIC](https://blog.opto22.com/optoblog/topic/groov-epic) ## [RTD with RIO](https://blog.opto22.com/optoblog/rtd-with-rio) Posted by [Terry Orchard](https://blog.opto22.com/optoblog/author/terry-orchard) on May 4, 2023, 2:30:00 PM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/groovRIOandlogo.png)](https://blog.opto22.com/optoblog/rtd-with-rio) ### Using powerful built-in software, it’s easy to add more functionality to the multifunction, mixed signal I/O on *groov* RIO, including using RTD temperature probes with minimal code. The *groov* RIO [MM1](https://www.opto22.com/products/product-container/grv-r7-mm1001-10), [MM2](https://www.opto22.com/products/product-container/grv-r7-mm2001-10), and even the *groov* EPIC [GRV-MM1001-10](https://www.opto22.com/products/product-container/grv-mm1001-10) modules are extremely flexible, with an incredible number of software configurable options. Even with all that potential, you can do more when you combine this I/O with software tools like PAC Control, CODESYS, Node-RED, and custom Linux programs. A great way to see this is with RTD sensors. [Read More](https://blog.opto22.com/optoblog/rtd-with-rio) 0 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/rtd-with-rio#comments-listing) Topics: [PAC Control](https://blog.opto22.com/optoblog/topic/pac-control), [Node-RED](https://blog.opto22.com/optoblog/topic/node-red), [CODESYS](https://blog.opto22.com/optoblog/topic/codesys), [groov RIO](https://blog.opto22.com/optoblog/topic/groov-rio), [temperature sensor](https://blog.opto22.com/optoblog/topic/temperature-sensor), [RTD](https://blog.opto22.com/optoblog/topic/rtd) [All posts](https://blog.opto22.com/optoblog/all) [Next](https://blog.opto22.com/optoblog/author/terry-orchard/page/2) ### Subscribe to Email Updates ### Recent Posts ### Posts by Topic - [groov EPIC (514)](https://blog.opto22.com/optoblog/topic/groov-epic) - [groov RIO (307)](https://blog.opto22.com/optoblog/topic/groov-rio) - [optonews (218)](https://blog.opto22.com/optoblog/topic/optonews) - [IIoT (214)](https://blog.opto22.com/optoblog/topic/iiot) - 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