--- title: OptoBlog | serial module description: serial module | --- - [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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[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 ## [Case Study: Varland Plating Upgrades 30-Year-Old Legacy System](https://blog.opto22.com/optoblog/case-study-varland-plating-upgrades-30-year-old-legacy-system) Posted by [Janice Colmer](https://blog.opto22.com/optoblog/author/janice-colmer) on Jul 8, 2024, 2:26:33 PM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/varland-plating2_3point5x2point5_300dpi-1.png)](https://blog.opto22.com/optoblog/case-study-varland-plating-upgrades-30-year-old-legacy-system) ### How do you go from serial comms to serious SCADA without downtime or compromise? Based in Cincinnati, Ohio, Varland Plating has provided high quality, precision barrel-plated finishes to their customers since 1946. Varland manually performed plating operations until the early 1990s. Then automated systems improved turnaround times and product quality. More recently, the company saw the advanced capabilities of Opto 22's *groov* products—smaller equipment footprint, Ethernet, data visibility, and more—and entered a new era of industrial automation. In this [case study](https://www.opto22.com/products/groov-case-studies/case-study-varland-plating-upgrades-30-year-old-le), find out how Varland Plating was able to bring a 30-year-old automation system into the future without downtime or compromising their SCADA goals. [Read More](https://blog.opto22.com/optoblog/case-study-varland-plating-upgrades-30-year-old-legacy-system) 0 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/case-study-varland-plating-upgrades-30-year-old-legacy-system#comments-listing) Topics: [Case studies](https://blog.opto22.com/optoblog/topic/case-studies), [groov EPIC](https://blog.opto22.com/optoblog/topic/groov-epic), [serial module](https://blog.opto22.com/optoblog/topic/serial-module), [Ignition](https://blog.opto22.com/optoblog/topic/ignition) ## [RS-232 and Level Converters](https://blog.opto22.com/optoblog/rs232-and-level-converters) Posted by [Ben Orchard](https://blog.opto22.com/optoblog/author/ben-orchard) on Oct 18, 2023, 1:25:33 PM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/RS232.png)](https://blog.opto22.com/optoblog/rs232-and-level-converters) ### This technical tip post covers the history and challenges of connecting RS-232 serial devices together. The nice thing about standards is that there are so many to choose from. Like every profession, industrial automation has a veritable cornucopia of standards we need to be aware of. RS-232 is no different or special in that regard. Let's take a look at the history of this hardware communication standard and use that as a springboard. We'll take a look at how modern microprocessor technology can be adapted to this very commonly used data communication standard in the industrial automation world. [Read More](https://blog.opto22.com/optoblog/rs232-and-level-converters) 2 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/rs232-and-level-converters#comments-listing) Topics: [groov EPIC](https://blog.opto22.com/optoblog/topic/groov-epic), [serial module](https://blog.opto22.com/optoblog/topic/serial-module), [RS232](https://blog.opto22.com/optoblog/topic/rs232) ## [New EPIC firmware 1.4: VPN Client, Network Diagnostics, and more](https://blog.opto22.com/optoblog/epic-update-more-networking-capabilities-for-your-pr1-processor) Posted by [Janice Colmer](https://blog.opto22.com/optoblog/author/janice-colmer) on Aug 22, 2019, 9:05:00 AM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/openVPN.jpg)](https://blog.opto22.com/optoblog/epic-update-more-networking-capabilities-for-your-pr1-processor) #### Firmware update 1.4.0 is now available for the *groov* EPIC processor, GRV-EPIC-PR1. Our engineering team released an exciting new update for [*groov* EPIC](https://www.opto22.com/products/groov-epic-system) this week. Here are some of the highlights. [Read More](https://blog.opto22.com/optoblog/epic-update-more-networking-capabilities-for-your-pr1-processor) 0 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/epic-update-more-networking-capabilities-for-your-pr1-processor#comments-listing) Topics: [Node-RED](https://blog.opto22.com/optoblog/topic/node-red), [Ignition Edge](https://blog.opto22.com/optoblog/topic/ignition-edge), [CODESYS](https://blog.opto22.com/optoblog/topic/codesys), [groov EPIC](https://blog.opto22.com/optoblog/topic/groov-epic), [software](https://blog.opto22.com/optoblog/topic/software), [serial module](https://blog.opto22.com/optoblog/topic/serial-module), [OpenVPN](https://blog.opto22.com/optoblog/topic/openvpn) ## [Start EPIC communication to your serial devices](https://blog.opto22.com/optoblog/start-epic-communication-to-your-serial-devices) Posted by [Janice Colmer](https://blog.opto22.com/optoblog/author/janice-colmer) on Jul 30, 2019, 10:56:51 AM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/Video_serial_io_ss-1.png)](https://blog.opto22.com/optoblog/start-epic-communication-to-your-serial-devices) #### Learn how to set up, install, and communicate using a *groov* EPIC serial I/O module. Many industrial automation applications require communication between the controller and multiple serial devices. The [GRV-CSERI-4](https://www.opto22.com/products/product-container/grv-cseri-4)module provides four independent and isolated serial ports for this purpose. Each port is software configurable to communicate with RS-232 or RS-485 (half duplex or full duplex) serial devices. [Read More](https://blog.opto22.com/optoblog/start-epic-communication-to-your-serial-devices) 1 Comment [Click here to read/write comments](https://blog.opto22.com/optoblog/start-epic-communication-to-your-serial-devices#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), [I/O](https://blog.opto22.com/optoblog/topic/i-o), [serial module](https://blog.opto22.com/optoblog/topic/serial-module) [All posts](https://blog.opto22.com/optoblog/all) ### Subscribe to Email Updates ### Recent Posts ### Posts by Topic - [groov EPIC (507)](https://blog.opto22.com/optoblog/topic/groov-epic) - [groov RIO (302)](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) - 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