Posted on / by Masibus Admin / in OPTO22



In 1974, engineer Bob Engman started Opto 22 with just 22 products: optically isolated solid-state relays (SSRs) manufactured for better reliability using a new potting process he helped invent. Today, more than 45 years later, the company still sells and supports all 22 of those original SSRs— plus hundreds of other reliable products for control, monitoring, data acquisition, and industrial internet of things (IIoT) applications. Over these decades we’ve introduced products that helped usher in the future of industrial automation:

  • In 1978 we developed digital I/O modules with plug-in racks for microprocessor-based control, introducing the red-black-yellow-white I/O module color-coding scheme that’s still the standard today.
  • In 1988 we designed the first graphical flowchart-based development environment for the PC, so control programs could be more easily developed.
  • In 1998 we introduced the first commercial Ethernet-based I/O unit. 
  • In 2007 we brought automation into the 21st century with SNAP PACs (programmable automation controllers), with more capabilities than PLCs
  • In 2018 we built the world’s first edge programmable industrial controller (EPIC), designed from the ground up for both real-time control and simplified IIoT data communication using standard internet protocols.


Now you can collect, process, view, and exchange data where it’s produced—at the edge of the network. When you work with data at the edge, you don’t have to worry about latency, and you have one single source of truth.

Securely share data among databases, cloud platforms, web services, PLC systems, and other systems and equipment, using open, modern communication standards. Built-in security features include configurable device firewall, VPN, encryption, user authentication, and more.

Connect with legacy PLCs and much more using Ignition Edge® Onboard or full Ignition from Inductive Automation®. Move data efficiently, decrease network load, and reduce IT reliance by using MQTT publish/subscribe communications.

Visualize data on the controller’s integral touchscreen, an external HDMI monitor, or from any web browser or mobile device.


Now you have new programming options:

  • Program with the field-proven, flowchart-based, multi-chart control language PAC Control.
  • Use any IEC 61131-3 compliant language with the CODESYS Development System and CODESYS runtime.
  • Exchange data using the visual, flow-based editor and runtime Node-RED, with its free pre-built nodes for databases, web services, and more.
  • Run your own C, C++, Java, Python, or other custom-developed application on an open, Linux-based automation system, using secure shell access.


From plant floors to remote sites, the edge demands industrially hardened equipment. Now you don’t have to worry about processing power in challenging locations.

groov EPIC has:

  • Stainless steel processor and I/O chassis with a secure, screw-down design
  • Industrial quad-core ARM processor and solid-state drive
  • Industrial high-resolution color touchscreen display
  • UL Hazardous Locations and Class 1 Div 2 approval
  • Wide -20 to 70ºC temperature range
  • ATEX compliance


You can rely on real-time control and I/O from an automation manufacturer with 45+ years of experience. Opto 22’s worldwide reputation for quality was built on solid state relays and I/O, and all our experience is poured into the design of groov EPIC.

You’ll appreciate:

  • Integral touchscreen for local configuration, commissioning, and troubleshooting—no PC required
  • Real-time, open-source Linux operating system
  • Multi-tasking real-time control engine
  • Dual independent Gigabit Ethernet network interfaces to help securely segment your control network from your business network
  • HDMI port for optional local monitor
  • USB ports for keyboard, mouse, Wi-Fi dongle, serial connections
  • Intelligent, hot-swappable, guaranteed-for-life I/O
  • Spring-clamp field wiring up to 14 AWG, with an integrated wireway and adjustable cover
  • Multicolor LED for I/O module quality, plus channel indicators for discrete I/O
  • Integrated power supply options
We’d love to hear from you to discuss Automation Process, Services, Training or to hear your new idea.