--- title: Tech Support Resources Cheat Sheet description: Need help outside of business hours? Bookmark or save this blog post for easy access to documents and resources that can assist you if you need help with product questions or troubleshooting.  image: https://blog.opto22.com/hubfs/ProductSupport.png --- - [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) - [MQTT Resources](https://www.opto22.com/products/mqtt-resources) - [Cybersecurity](https://www.opto22.com/products/cybersecurity) - [Power and Energy Monitoring](https://www.opto22.com/products/power-and-energy-monitoring) - [How to Buy](https://www.opto22.com/products/how-to-buy) - [Hands-On Learning and Demo Units](https://www.opto22.com/products/hands-on-learning-and-demo-units) - [Product Comparisons and Compatibility](https://www.opto22.com/products/product-comparisons-and-compatibility) - [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) - [Privacy Policy](https://www.opto22.com/support/privacy) - [About Us](https://www.opto22.com/about-us) - [History](https://www.opto22.com/about-us/history) - [Location](https://www.opto22.com/about-us/directions) - [Corporate Contacts](https://www.opto22.com/about-us/corporate-contacts) - [Opto 22 Product Philosophy](https://www.opto22.com/about-us/opto-22-product-philosophy) - [Customer Quotes/Testimonials](https://www.opto22.com/about-us/customer-quotes-testimonials) - [Virtual Tour](https://www.opto22.com/about-us/virtual-tour) - [Pressroom](https://www.opto22.com/about-us/pressroom) - [Distributors](https://www.opto22.com/about-us/distributors) - [International](https://www.opto22.com/about-us/international) - [Sustainability](https://www.opto22.com/about-us/sustainability) - [Careers](https://www.opto22.com/about-us/careers) - [Community](https://www.opto22.com/community) - [OptoPartners](https://www.opto22.com/community/opto-partners) - [Technology Partners](https://www.opto22.com/community/technology-partners) - [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) - [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) - [MQTT Resources](https://www.opto22.com/products/mqtt-resources) - [Cybersecurity](https://www.opto22.com/products/cybersecurity) - [Power and Energy Monitoring](https://www.opto22.com/products/power-and-energy-monitoring) - [How to Buy](https://www.opto22.com/products/how-to-buy) - [Hands-On Learning and Demo Units](https://www.opto22.com/products/hands-on-learning-and-demo-units) - [Product Comparisons and Compatibility](https://www.opto22.com/products/product-comparisons-and-compatibility) - [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) - [Privacy Policy](https://www.opto22.com/support/privacy) - [About Us](https://www.opto22.com/about-us) - [History](https://www.opto22.com/about-us/history) - [Location](https://www.opto22.com/about-us/directions) - [Corporate Contacts](https://www.opto22.com/about-us/corporate-contacts) - [Opto 22 Product Philosophy](https://www.opto22.com/about-us/opto-22-product-philosophy) - [Customer Quotes/Testimonials](https://www.opto22.com/about-us/customer-quotes-testimonials) - [Virtual Tour](https://www.opto22.com/about-us/virtual-tour) - [Pressroom](https://www.opto22.com/about-us/pressroom) - [Distributors](https://www.opto22.com/about-us/distributors) - [International](https://www.opto22.com/about-us/international) - [Sustainability](https://www.opto22.com/about-us/sustainability) - [Careers](https://www.opto22.com/about-us/careers) - [Community](https://www.opto22.com/community) - [OptoPartners](https://www.opto22.com/community/opto-partners) - [Technology Partners](https://www.opto22.com/community/technology-partners) - [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)   # Tech Support Resources Cheat Sheet # OptoBlog # Tech Support Resources Cheat Sheet Posted by [Janice Colmer](https://blog.opto22.com/optoblog/author/janice-colmer) on Nov 19, 2025, 7:10:38 AM - [Tweet](https://twitter.com/share) ### Need help outside of business hours? Bookmark or save this blog post for easy access to documents and resources that can assist you if you need help with product questions or troubleshooting.  One of the best things about Opto 22 product support is: it's free! The dedicated team of technical support engineers is here to help you during regular business hours, Monday-Friday, 7:00 a.m. to 5:00 p.m. (Pacific Time). But what if you need assistance outside of business hours? Several resources available on our website, accessible 24/7, can answer your questions, explain the details of product features, or provide troubleshooting advice. Here's a list of the most popular and often referenced documents that our own support team uses regularly.   ##### [![ProductSupport](https://blog.opto22.com/hs-fs/hubfs/ProductSupport.png?width=500&height=290&name=ProductSupport.png)](https://www.opto22.com/support) Product Release Notes When you have questions about a new firmware release or product update, the release notes that accompany each new update can be very helpful. Here are a few you may need:  - [PAC Project](https://www.opto22.com/support/resources-tools/documents/rm-pac-project-readme) (for both the [Basic](https://www.opto22.com/products/pacprojectbas) and [Professional](https://www.opto22.com/products/pacprojectpro) versions) - Includes information on new features, enhancements, and bug fixes for the current and previous releases of each PAC Project application: PAC Control, PAC Display, OptoOPCServer, OptoDataLink, SoftPAC, PAC Manager, and Tools. - [*groov* EPIC Processor Firmware](https://www.opto22.com/support/resources-tools/documents/groov-epic-processor-release-notes) (part numbers [GRV-EPIC-PR1](https://www.opto22.com/products/product-container/grv-epic-pr1), [GRV-EPIC-PR2](https://www.opto22.com/products/grv-epic-pr2)) - Includes information on new features, enhancements, and bug fixes for each component of the processor: *groov* EPIC processor firmware, PAC Control Engine, *groov* Manage, *groov* View, Node-RED, Data Service, Ignition Edge®, and CODESYS® Runtime Engine. - [*groov* RIO Firmware](https://www.opto22.com/support/resources-tools/documents/groov-rio-firmware-release-notes) (part numbers [GRV-R7-MM1001-10](https://www.opto22.com/products/product-container/grv-r7-mm1001-10), [GRV-R7-MM2001-10](https://www.opto22.com/products/product-container/grv-r7-mm2001-10), and [GRV-R7-I1VAPM-3](https://www.opto22.com/products/product-container/grv-r7-i1vapm-3)) - Includes information on new features, enhancements, and bug fixes for *groov* Manage, *groov* View, Node-RED, Data Service, and Ignition Edge® (GRV-R7-MM2001-10 only). - [*groov* I/O Module Firmware](https://www.opto22.com/support/resources-tools/documents/rm-groov-i-o-modules-firmware-readme) - Lists the latest updates to the firmware for *groov* I/O modules, including information on new features, enhancements, and bug fixes. - [CODESYS Library Package](https://www.opto22.com/support/resources-tools/documents/rm-library-package-for-codesys-readme) - Describes the new features, enhancements, and bug fixes delivered in the latest release, as well as previous releases of the Opto 22 Library Package for the CODESYS Development System. ##### User's Guides Each product also has a detailed user's guide with step-by-step instructions, including troubleshooting tips: | Product | Document | | --- | --- | | *groov* RIO Universal Edge I/O  | [*groov *RIO Universal I/O User's Guide](https://www.opto22.com/support/resources-tools/documents/2324-groov-rio-users-guide) | | *groov *RIO EMU Edge I/O | [*groov *RIO EMU Energy Monitoring Unit User's Guide](https://opto22.com/support/resources-tools/documents/2372-groov-rio-energy-monitoring-unit-user-s-guide) | | *groov* EPIC System | [*groov* EPIC User's Guide](https://www.opto22.com/support/resources-tools/documents/2267-groov-epic-user-s-guide) | | SNAP PAC System  | [Quick Guide: Troubleshooting Info from SNAP PAC Systems](https://www.opto22.com/support/resources-tools/documents/1826-quick-guide-troubleshooting-info-snap-pac) | | PAC Control software  | [PAC Control User's Guide](https://www.opto22.com/support/resources-tools/documents/1700-pac-control-users-guide) | | PAC Display HMI software  | [PAC Display User's Guide](https://www.opto22.com/support/resources-tools/documents/1702_pac_display_users_guide-pdf) | | *groov *View software | [*groov *View User's Guide](https://www.opto22.com/support/resources-tools/documents/2027-groov-view-users-guide) | | *groov* Server for Windows | [*groov* Server User's Guide](https://www.opto22.com/support/resources-tools/documents/2078-groov-server-users-guide) | | SNAP PAC S controllers  | [SNAP PAC S-series Controllers User's Guide](https://www.opto22.com/support/resources-tools/documents/1592-snap-pac-s-series-users-guide) | | SNAP PAC R controllers  | [SNAP PAC R-series Controllers User's Guide](https://www.opto22.com/support/resources-tools/documents/1595-snap-pac-r-series-users-guide) | | E1 and E2 brain boards  | [E1 and E2 User's Guide](https://www.opto22.com/support/resources-tools/documents/1563-e1-and-e2-user-s-guide) | Working with some of our older control systems? We suggest Form 1104: [Troubleshooting Legacy Opto 22 Products](https://www.opto22.com/support/resources-tools/documents/1104-guide-to-troubleshooting-legacy-opto-22-produ). ##### OptoForums You're encouraged to join the [OptoForums](https://forums.opto22.com/) community! Hosted and moderated by Opto engineers, the Forums have valuable technical advice, sample code, product feature discussions, and firmware release previews that you can't get anywhere else. You'll find great resources and tips from experienced Opto 22 product users—and get the chance to help other users with your insights. ##### Opto KnowledgeBase [![KB_Icon-w-BG_500](https://blog.opto22.com/hs-fs/hubfs/KB_Icon-w-BG_500.png?width=150&height=150&name=KB_Icon-w-BG_500.png)](https://www.opto22.com/support/resources-tools?rt=67)Written and reviewed by our own support engineers and technical writers, the [Opto KnowledgeBase](https://www.opto22.com/support/resources-tools?rt=67) is a valuable library of articles that are based on previous tech support cases. You'll find workarounds, fixes, and solutions in these KB articles, and you may find your specific question already answered. Just type a topic or keyword in the [KnowledgeBase search box](https://www.opto22.com/support/resources-tools?rt=67). You'll also find these KB articles linked in the Release Notes documentation. ##### Resources and Tools  [![RandTSearchSSv2](https://blog.opto22.com/hs-fs/hubfs/RandTSearchSSv2.png?width=803&height=201&name=RandTSearchSSv2.png)](https://www.opto22.com/support/resources-tools?rt=59&page=1) While searching the KBs, you may notice that the Knowledge Base is located in the [Resources and Tools](https://www.opto22.com/support/resources-tools?rt=59&page=1) section of our website.  There, you can also click on one of the other tabs across the top menu, which gives you the option to search for:  - [Documents](https://www.opto22.com/support/resources-tools?rt=59&page=1) - [Downloads](https://www.opto22.com/support/resources-tools?rt=68&page=1) - [Demos](https://www.opto22.com/support/resources-tools?rt=77&page=1) - [Videos](https://www.opto22.com/support/resources-tools?rt=60&page=1) - [Blog posts](https://www.opto22.com/support/resources-tools?rt=78&page=1) ##### Opto 22 Developer Site The [Opto 22 Developer website](https://developer.opto22.com/) site gets a lot of traffic from developers working with *groov* EPIC, SNAP PACs, Node-RED, and even industrial I/O for Raspberry Pi. Since all Opto 22 products are designed on open standards, you have a variety of ways to interact with them and integrate with other systems. The developer site helps you do that.   We hope the information in this post becomes a handy reference you keep bookmarked. However, remember that our support team is here to help! [Contact us](https://www.opto22.com/support/contact-us) through our website, [speak with an Opto 22 engineer](https://www.opto22.com/support/talk-to-an-engineer), send an email to support@opto22.com, or call 951-695-3080, Monday through Friday. Looking for product support outside the United States? Here are [International Support](https://www.opto22.com/about-us/international) options.   Topics: [groov EPIC](https://blog.opto22.com/optoblog/topic/groov-epic), [groov RIO](https://blog.opto22.com/optoblog/topic/groov-rio), [Opto 22 product support](https://blog.opto22.com/optoblog/topic/opto-22-product-support) ### Written by [Janice Colmer](https://blog.opto22.com/optoblog/author/janice-colmer) Janice has worked at Opto 22 for over 20 years and is part of the marketing team that strives to share new and relevant content with the industrial automation industry. She enjoys books, camping, country music, and spending time with family and friends. Find me on: [LinkedIn](https://www.linkedin.com/in/jcolmer/) ### Subscribe to Email Updates ### Recent Posts ### Posts by Topic - [groov EPIC (503)](https://blog.opto22.com/optoblog/topic/groov-epic) - [groov RIO (300)](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) - [groov (192)](https://blog.opto22.com/optoblog/topic/groov) - [IoT (148)](https://blog.opto22.com/optoblog/topic/iot) - [Internet of Things (131)](https://blog.opto22.com/optoblog/topic/internet-of-things) - [Ignition (130)](https://blog.opto22.com/optoblog/topic/ignition) - [Node-RED (128)](https://blog.opto22.com/optoblog/topic/node-red) - [PACs (127)](https://blog.opto22.com/optoblog/topic/pacs) - [MQTT (125)](https://blog.opto22.com/optoblog/topic/mqtt) - [Events & conferences (117)](https://blog.opto22.com/optoblog/topic/events-conferences) - [Case studies (107)](https://blog.opto22.com/optoblog/topic/case-studies) - 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