--- title: OptoBlog | PAC Control (4) description: PAC Control | (4) --- - [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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[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)   # OptoBlog # OptoBlog ## [I/O module quality indicator LED sheds light on system status](https://blog.opto22.com/optoblog/i/o-module-quality-indicator-led-sheds-light-on-system-status) Posted by [Janice Colmer](https://blog.opto22.com/optoblog/author/janice-colmer) on Jul 22, 2019, 10:21:08 AM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/Video_EPIC_ModuleQuality_ss.png)](https://blog.opto22.com/optoblog/i/o-module-quality-indicator-led-sheds-light-on-system-status) #### New video workshop takes a closer look at the LED quality indicator on *groov* EPIC I/O modules. Are you seeing a yellow light on one of your *groov* EPIC I/O modules? This means that one or more of its values is outside of the expected range. Opto 22 applications engineer Ben Orchard explains why this is important and how to use this feature in a video that's just been added to the [*groov* EPIC hardware playlist](https://www.opto22.com/support/resources-tools/videos/playlist-epic-hardware). [Read More](https://blog.opto22.com/optoblog/i/o-module-quality-indicator-led-sheds-light-on-system-status) 1 Comment [Click here to read/write comments](https://blog.opto22.com/optoblog/i/o-module-quality-indicator-led-sheds-light-on-system-status#comments-listing) Topics: [PAC Control](https://blog.opto22.com/optoblog/topic/pac-control), [I/O modules](https://blog.opto22.com/optoblog/topic/i-o-modules), [groov EPIC](https://blog.opto22.com/optoblog/topic/groov-epic) ## [PAC Project Suite Updated](https://blog.opto22.com/optoblog/time-for-a-pac-project-update) Posted by [Janice Colmer](https://blog.opto22.com/optoblog/author/janice-colmer) on Jun 20, 2019, 8:28:59 AM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/social-suggested-images/blog.opto22.comhubfssocial-suggested-imagesPACProjectBas_1600-3.png)](https://blog.opto22.com/optoblog/time-for-a-pac-project-update) ### New PAC Project version R10.2002 now available Take advantage of several fixes and improvements in this latest release of the PAC Project software suite, both Basic and Professional editions.  [Read More](https://blog.opto22.com/optoblog/time-for-a-pac-project-update) 0 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/time-for-a-pac-project-update#comments-listing) Topics: [PAC Project](https://blog.opto22.com/optoblog/topic/pac-project), [PAC Control](https://blog.opto22.com/optoblog/topic/pac-control), [PAC Manager](https://blog.opto22.com/optoblog/topic/pac-manager), [PAC Display](https://blog.opto22.com/optoblog/topic/pac-display), [OptoOPCServer](https://blog.opto22.com/optoblog/topic/optoopcserver), [OptoDataLink](https://blog.opto22.com/optoblog/topic/optodatalink) ## [Help is here - a guide for developing with groov EPIC](https://blog.opto22.com/optoblog/developing-with-groov-epic) Posted by [Terry Orchard](https://blog.opto22.com/optoblog/author/terry-orchard) on Jan 28, 2019, 10:00:00 AM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/jumbotron-processor-v5.jpg)](https://blog.opto22.com/optoblog/developing-with-groov-epic) Have you ever been stuck on a coding problem? Unsure of which tool to use for an application? Or if you have the functionality you need to get the job done? Maybe you’ve just got a new system and need a map to help you learn the new features and functionality. [Read More](https://blog.opto22.com/optoblog/developing-with-groov-epic) 3 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/developing-with-groov-epic#comments-listing) Topics: [PAC Control](https://blog.opto22.com/optoblog/topic/pac-control), [REST API](https://blog.opto22.com/optoblog/topic/rest-api), [Node-RED](https://blog.opto22.com/optoblog/topic/node-red), [MQTT](https://blog.opto22.com/optoblog/topic/mqtt), [Ignition Edge](https://blog.opto22.com/optoblog/topic/ignition-edge), [IEC 61131-3](https://blog.opto22.com/optoblog/topic/iec-61131-3), [groov EPIC](https://blog.opto22.com/optoblog/topic/groov-epic), [developer](https://blog.opto22.com/optoblog/topic/developer) ## [It's an EPIC holiday at Opto 22!](https://blog.opto22.com/optoblog/its-an-epic-holiday-at-opto-22) Posted by [Benson Hougland](https://blog.opto22.com/optoblog/author/benson-hougland) on Dec 16, 2018, 4:31:56 PM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/groovDemoHolidayPage.jpg)](https://blog.opto22.com/optoblog/its-an-epic-holiday-at-opto-22) #### Ready to see *groov* EPIC in action? Have some holiday fun by taking control of our lobby Christmas Tree lights and Lionel Train. Visit our live *groov* [demo site](https://demo.groov.com) and you'll find a section dedicated to **Holiday Lights**. [Read More](https://blog.opto22.com/optoblog/its-an-epic-holiday-at-opto-22) 1 Comment [Click here to read/write comments](https://blog.opto22.com/optoblog/its-an-epic-holiday-at-opto-22#comments-listing) Topics: [PAC Control](https://blog.opto22.com/optoblog/topic/pac-control), [Node-RED](https://blog.opto22.com/optoblog/topic/node-red), [groov EPIC](https://blog.opto22.com/optoblog/topic/groov-epic), [holiday schedule](https://blog.opto22.com/optoblog/topic/holiday-schedule) ## [PAC Project R10.2 is available now](https://blog.opto22.com/optoblog/get-your-update-pac-project-r10.2-is-available-now) Posted by [Janice Colmer](https://blog.opto22.com/optoblog/author/janice-colmer) on Dec 11, 2018, 1:35:48 PM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/social-suggested-images/PACProjectBas_1600-3.png)](https://blog.opto22.com/optoblog/get-your-update-pac-project-r10.2-is-available-now) Do you use PAC Control, PAC Display or OptoOPCServer?  Then you'll want to download version R10.2 of PAC Project software.  This update adds support for soon-to-be released *groov* I/O modules, and also addresses important bug fixes.  [Read More](https://blog.opto22.com/optoblog/get-your-update-pac-project-r10.2-is-available-now) 0 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/get-your-update-pac-project-r10.2-is-available-now#comments-listing) Topics: [PAC Project](https://blog.opto22.com/optoblog/topic/pac-project), [PAC Control](https://blog.opto22.com/optoblog/topic/pac-control), [PAC Display](https://blog.opto22.com/optoblog/topic/pac-display), [OptoOPCServer](https://blog.opto22.com/optoblog/topic/optoopcserver), [software](https://blog.opto22.com/optoblog/topic/software) ## [Four-port serial module now available for the groov EPIC system](https://blog.opto22.com/optoblog/four-port-serial-module-available-for-the-groov-epic-system) Posted by [Janice Colmer](https://blog.opto22.com/optoblog/author/janice-colmer) on Oct 8, 2018, 12:55:18 PM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/GRV-CSERI-4_LidCloseOpen_800%20(1).png)](https://blog.opto22.com/optoblog/four-port-serial-module-available-for-the-groov-epic-system) Opto 22 has just announced the release of the *groov* serial I/O module, [**GRV-CSERI-4**](https://www.opto22.com/products/product-container/grv-cseri-4). This module plugs into a[*groov* EPIC](https://info.opto22.com/this-is-epic-introducing-groov-epic) chassis alongside *groov* EPIC analog and discrete I/O modules, allowing you the mix of signals you need at any location. [Read More](https://blog.opto22.com/optoblog/four-port-serial-module-available-for-the-groov-epic-system) 1 Comment [Click here to read/write comments](https://blog.opto22.com/optoblog/four-port-serial-module-available-for-the-groov-epic-system#comments-listing) Topics: [groov](https://blog.opto22.com/optoblog/topic/groov), [PAC Control](https://blog.opto22.com/optoblog/topic/pac-control), [EPIC](https://blog.opto22.com/optoblog/topic/epic), [I/O modules](https://blog.opto22.com/optoblog/topic/i-o-modules), [serial](https://blog.opto22.com/optoblog/topic/serial) ## [OptoNews: PAC Project R10.1 just released](https://blog.opto22.com/optoblog/optonews-pac-project-r10.1000-just-released) Posted by [Janice Colmer](https://blog.opto22.com/optoblog/author/janice-colmer) on Oct 4, 2018, 10:00:00 AM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/PACProjectBas_1600.png)](https://blog.opto22.com/optoblog/optonews-pac-project-r10.1000-just-released) We've recently released PAC Project version R10.1 with enhancements and a few bug fixes for each PAC Project application: PAC Control, PAC Display, OptoOPCServer, and PAC Manager. [Read More](https://blog.opto22.com/optoblog/optonews-pac-project-r10.1000-just-released) 0 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/optonews-pac-project-r10.1000-just-released#comments-listing) Topics: [groov](https://blog.opto22.com/optoblog/topic/groov), [Updates](https://blog.opto22.com/optoblog/topic/updates), [optonews](https://blog.opto22.com/optoblog/topic/optonews), [PACs](https://blog.opto22.com/optoblog/topic/pacs), [PAC Project](https://blog.opto22.com/optoblog/topic/pac-project), [PAC Control](https://blog.opto22.com/optoblog/topic/pac-control), [PAC Manager](https://blog.opto22.com/optoblog/topic/pac-manager), [EPIC](https://blog.opto22.com/optoblog/topic/epic), [PAC Display](https://blog.opto22.com/optoblog/topic/pac-display) ## [Case study: Reducing treatment costs for industrial wastewater](https://blog.opto22.com/optoblog/case-study-reducing-treatment-costs-for-industrial-wastewater) Posted by [Janice Colmer](https://blog.opto22.com/optoblog/author/janice-colmer) on Jul 3, 2018, 3:26:01 PM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hs-fs/hubfs/Aaqua_SBR%20reactor%20+%20DAF%20+%20Hyperbolic%20aeration.jpg?t=1530551535459&width=300&name=Aaqua_SBR%20reactor%20+%20DAF%20+%20Hyperbolic%20aeration.jpg)](https://blog.opto22.com/optoblog/case-study-reducing-treatment-costs-for-industrial-wastewater) ## AAQUA NV designs flexible, robust systems Turning industrial wastewater into something that municipal water systems will accept is a tough job.  [Read More](https://blog.opto22.com/optoblog/case-study-reducing-treatment-costs-for-industrial-wastewater) 0 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/case-study-reducing-treatment-costs-for-industrial-wastewater#comments-listing) Topics: [Case studies](https://blog.opto22.com/optoblog/topic/case-studies), [Process control](https://blog.opto22.com/optoblog/topic/process-control), [PACs](https://blog.opto22.com/optoblog/topic/pacs), [PAC Project](https://blog.opto22.com/optoblog/topic/pac-project), [PAC Control](https://blog.opto22.com/optoblog/topic/pac-control) ## [Order your new groov EPIC system starting now](https://blog.opto22.com/optoblog/pre-order-your-new-groov-epic-system) Posted by [Jean Femia](https://blog.opto22.com/optoblog/author/jean-femia) on Mar 26, 2018, 12:01:00 PM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hs-fs/hubfs/social-suggested-images/groovEPIC.png?t=1521655212922&width=280&name=groovEPIC.png)](https://blog.opto22.com/optoblog/pre-order-your-new-groov-epic-system) Opto 22's ***groov* EPIC® system** starts shipping on May 18. **You can start ordering now!** Pre-orders will ship first, and based on early feedback from several EPIC Roadshows, this new system will be in high demand. Customers are excited about the built-in features of *groov* EPIC, not only for IIoT applications but for all automation and data acquisition applications. Here are just a few of these features: [Read More](https://blog.opto22.com/optoblog/pre-order-your-new-groov-epic-system) 0 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/pre-order-your-new-groov-epic-system#comments-listing) Topics: [Process control](https://blog.opto22.com/optoblog/topic/process-control), [Discrete control](https://blog.opto22.com/optoblog/topic/discrete-control), [groov](https://blog.opto22.com/optoblog/topic/groov), [Internet of Things](https://blog.opto22.com/optoblog/topic/internet-of-things), [PLCs](https://blog.opto22.com/optoblog/topic/plcs), [Remote monitoring](https://blog.opto22.com/optoblog/topic/remote-monitoring), [IoT](https://blog.opto22.com/optoblog/topic/iot), [Machine builder](https://blog.opto22.com/optoblog/topic/machine-builder), [New products](https://blog.opto22.com/optoblog/topic/new-products), [Integrators](https://blog.opto22.com/optoblog/topic/integrators), [I/O](https://blog.opto22.com/optoblog/topic/io), [PAC Control](https://blog.opto22.com/optoblog/topic/pac-control), [IIoT](https://blog.opto22.com/optoblog/topic/iiot), [Industrial Internet of Things](https://blog.opto22.com/optoblog/topic/industrial-internet-of-things), [Node-RED](https://blog.opto22.com/optoblog/topic/node-red), [Data acquisition](https://blog.opto22.com/optoblog/topic/data-acquisition), [MQTT](https://blog.opto22.com/optoblog/topic/mqtt), [Ignition Edge](https://blog.opto22.com/optoblog/topic/ignition-edge), [EPIC](https://blog.opto22.com/optoblog/topic/epic) ## [You're the first to know...about our EPIC announcement!](https://blog.opto22.com/optoblog/youre-the-first-to-know-about-our-epic-announcement) Posted by [Jean Femia](https://blog.opto22.com/optoblog/author/jean-femia) on Feb 12, 2018, 9:52:04 AM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/groovEPIC.png)](https://blog.opto22.com/optoblog/youre-the-first-to-know-about-our-epic-announcement) When we announce a new product, we want you—our loyal customers and OptoBlog readers—to be the first to hear about it.  And this isn't just one product. This is **EPIC**: the world's first **Edge Programmable Industrial Control system**—a brand-new I/O and control system built for the future of automation and designed for the way you work. [Read More](https://blog.opto22.com/optoblog/youre-the-first-to-know-about-our-epic-announcement) 7 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/youre-the-first-to-know-about-our-epic-announcement#comments-listing) Topics: [Energy management](https://blog.opto22.com/optoblog/topic/energy-management), [Process control](https://blog.opto22.com/optoblog/topic/process-control), [Food & beverage](https://blog.opto22.com/optoblog/topic/food-amp-beverage), [Discrete control](https://blog.opto22.com/optoblog/topic/discrete-control), [groov](https://blog.opto22.com/optoblog/topic/groov), [Internet of Things](https://blog.opto22.com/optoblog/topic/internet-of-things), [PLCs](https://blog.opto22.com/optoblog/topic/plcs), [Remote monitoring](https://blog.opto22.com/optoblog/topic/remote-monitoring), [Water & wastewater](https://blog.opto22.com/optoblog/topic/water-amp-wastewater), [IoT](https://blog.opto22.com/optoblog/topic/iot), [Machine builder](https://blog.opto22.com/optoblog/topic/machine-builder), [PACs](https://blog.opto22.com/optoblog/topic/pacs), [OEM](https://blog.opto22.com/optoblog/topic/oem), [New products](https://blog.opto22.com/optoblog/topic/new-products), [Integrators](https://blog.opto22.com/optoblog/topic/integrators), [I/O](https://blog.opto22.com/optoblog/topic/io), [PAC Project](https://blog.opto22.com/optoblog/topic/pac-project), [Building management](https://blog.opto22.com/optoblog/topic/building-management), [Oil & gas](https://blog.opto22.com/optoblog/topic/oil-gas), [PAC Control](https://blog.opto22.com/optoblog/topic/pac-control), [IIoT](https://blog.opto22.com/optoblog/topic/iiot), [Industrial Internet of Things](https://blog.opto22.com/optoblog/topic/industrial-internet-of-things), [Node-RED](https://blog.opto22.com/optoblog/topic/node-red), [Data acquisition](https://blog.opto22.com/optoblog/topic/data-acquisition), [MQTT](https://blog.opto22.com/optoblog/topic/mqtt), [Ignition Edge](https://blog.opto22.com/optoblog/topic/ignition-edge), [EPIC](https://blog.opto22.com/optoblog/topic/epic) [Previous](https://blog.opto22.com/optoblog/topic/pac-control/page/3) [All posts](https://blog.opto22.com/optoblog/all) [Next](https://blog.opto22.com/optoblog/topic/pac-control/page/5) ### Subscribe to Email Updates ### Recent Posts ### Posts by Topic - 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