Opto 22 - Resources & Tools

Downloads - 1/12/2026

OptoOPCServer is a fast and efficient OPC 2.0-compliant server for exchanging data with Opto 22 groov EPIC and SNAP PAC systems running PAC Control strategies, or with SNAP Ethernet-based I/O...more

OptoDataLink

Downloads - 1/12/2026

OptoDataLink, part of the PAC Project Professional Software Suite, provides data exchange between groov EPIC processors or the SNAP PAC system and popular databases such as Microsoft® SQL...more

PAC Control Professional

Downloads - 1/12/2026

PAC Control, part of the PAC Project Software Suite, is an intuitive, flowchart-based tool for programming industrial automation, process control, building automation, remote monitoring, data acquisition...morePAC Control, part of the PAC Project Software Suite, is an intuitive, flowchart-based tool for programming industrial automation, process control, building automation, remote monitoring, data acquisition, and Industrial Internet of Things (IIoT) applications. Using PAC Control, you create and debug control programs and then download and run them on a groov EPIC edge programmable industrial controller or on a SNAP PAC industrial controller. In addition to industrial control, groov EPIC, SNAP PAC R-series, and SNAP PAC S-series controllers are developer and IIoT ready with a built-in HTTP/HTTPS server and a RESTful API. This product includes software and documentation in Adobe Acrobat PDF format as a download. The download file includes other PAC Project software in addition to PAC Control. You can purchase PAC Control Professional as an individual application or as part of the PAC Project Professional Software Suite, which also includes software for HMI development, OPC communication, and database connectivity. Upgrade Information To find out if you can upgrade to this version for free, see the Opto 22 Software Upgrade Policy. If you are using older (not groov EPIC, groov RIO, or SNAP PAC) controllers or brains with PAC Project, see the SNAP PAC System Migration Technical Note (form 1688) for important information. Installation Information All PAC Project software, both Basic and Professional, is in one single download. You can install the Basic version right away to get started. To install PAC Control Professional, first purchase the software and contact Opto 22 to confirm your purchase and receive your password. Click for more about purchasing software and getting a password. When you have your password, download and run the installer file. Choose PAC Project Professional and enter your password for PAC Control Professional. The following applications are installed by default. If you do not want them all, uncheck the ones you do not want when prompted during the installation process. PAC Control Professional (password required) PAC Display Basic PAC Manager (used only with SNAP PAC controllers and I/O units) Tools (PAC Utilities) EtherNet/IP Configurator <less

PAC Control Basic

Downloads - 1/12/2026

PAC Control, part of the PAC Project Software Suite, is an intuitive, flowchart-based tool for programming industrial automation, process control, building automation, remote monitoring, data acquisition...more

PAC Display Professional

Downloads - 1/12/2026

PAC Display Professional, part of the PAC Project Professional Software Suite, is a user-friendly HMI package for building operator interface applications to communicate with groov EPIC systems, SNAP PAC...more

PAC Display Basic

Downloads - 1/12/2026

PAC Display Basic, part of the PAC Project Software Suite, is a user-friendly HMI package for building operator interface applications to communicate with groov EPIC systems, groov RIO edge I/O modules...more

PAC Project Professional

Downloads - 1/12/2026

The PAC Project Software Suite from Opto 22 provides all the software you need for industrial automation, process control, building automation, remote monitoring, data acquisition, and Industrial...moreThe PAC Project Software Suite from Opto 22 provides all the software you need for industrial automation, process control, building automation, remote monitoring, data acquisition, and Industrial Internet of Things (IIoT) applications in any field. PAC Project software is fully integrated with groov EPIC processors, groov RIO edge I/O modules, SNAP PAC controllers and brains, and groov and SNAP I/O. See current release details in the PAC Project Readme (Release Notes). PAC Project Professional includes the following: PAC Control Professional for developing control programs to run on groov EPIC processors and SNAP PAC controllers. groov EPIC, SNAP PAC R-series, and SNAP PAC S-series controllers are developer and IIoT ready with a built-in HTTP/HTTPS server and a RESTful API. PAC Display Professional for creating HMIs for operators and technicians PAC Manager for SNAP PAC configuration and maintenance OptoOPCServer for communication with OPC 2.0 clients OptoDataLink for sharing SNAP PAC system data with databases SoftPAC for running control programs on a software-based programmable automation controller (PAC) designed for PC-based control This is a software product that includes complete documentation in Adobe Acrobat PDF format. About Controller Redundancy PAC Project Professional includes support for controller-level redundancy when used with identical SNAP PAC S-series controllers and the SNAP PAC Redundancy Option Kit (part number SNAP-PAC-ROK). To use controller redundancy, controller firmware R9.1b or higher is required. NOTE: Support for controller redundancy has been restricted to SNAP PAC S-series controllers running firmware version R10.4e or lower using PAC Project versions R9.0 to R10.6. In PAC Project R10.6 and higher, you are no longer able to create new strategies containing controller redundancy. You can continue to maintain existing strategies that have controller redundancy; however, those controllers must use firmware version R10.4e or lower. Upgrade Information To find out if you can upgrade to this version for free, see the Opto 22 Software Upgrade Policy. If you are using older (not groov EPIC, groov RIO, or SNAP PAC) controllers or brains with PAC Project, see the SNAP PAC System Migration Technical Note (form 1688) for important information. Installation Information All PAC Project software, both Basic and Professional, is in one single download. You can install the Basic version right away to get started. To install PAC Project Professional, first purchase the software, and then contact Opto 22 to confirm your purchase and receive your password. Click for more about purchasing software and getting a password. When you have your password, download and run the installer file. Choose PAC Project Professional and enter your password. The following applications are installed by default. If you do not want them all, uncheck the ones you do not want when prompted during the installation process. PAC Control Professional PAC Display Professional OptoOPCServer OptoDataLink SoftPAC PAC Manager Tools (PAC Utilities) EtherNet/IP Configurator <less

PAC Project Basic

Downloads - 1/12/2026

The PAC Project Software Suite from Opto 22 provides all the software you need for industrial automation, process control, building automation, remote monitoring, data acquisition, and Industrial...more

PAC Project Demo

Downloads - 1/12/2026

PAC Project Demo contains everything you need to demonstrate or experiment with Opto 22's PAC Project Software Suite: PAC Control development software and a pre-made control strategy PAC...more

PAC Manager

Downloads - 1/12/2026

PAC Manager is a configuration and maintenance utility used with all SNAP PAC controllers and brains. Use it to assign and change IP addresses, load new firmware, configure points and features, and make...more

PAC Project Software - MSI for Command Line Installation

Downloads - 1/12/2026

Use this .msi (Microsoft® Installer) installation file to install PAC Project software from the command line in Microsoft Windows®. A command line installation of PAC Project in silent mode...more

GRV-IMAI-8 Module Firmware

Downloads - 11/24/2025

This download contains current firmware for the GRV-IMAI-8 module. For a list of bug fixes and enhancements included in this firmware, see the groov I/O Modules Firmware Release Notes document. ...more

SVG Image Library

Downloads, Demo - 11/18/2025

Select, modify, and download an image from our free library containing images for manufacturing, processing, HVAC, flow, transportation, and many other images.

SNAP PAC Sim Control Engine Simulator

Downloads, Demo - 10/23/2025

SNAP PAC Sim is Microsoft Windows-based software that simulates the control engine of an Opto 22 programmable automation controller (PAC). You can use SNAP PAC Sim with Opto 22 PAC Project...more

SoftPAC Controller Firmware

Downloads - 10/15/2025

This download contains the current firmware for the SoftPAC software-based controller. For information about changes and fixes in the current version, see the README document. NOTE: This file...more

SNAP-PAC-SB2 Brain Firmware

Downloads - 10/15/2025

This download contains current firmware for the SNAP-PAC-SB2 brain. Current firmware for all SNAP PAC brains and controllers is available in a single download here. See the ...more

SNAP-PAC-SB1 Brain Firmware

Downloads - 10/15/2025

This download contains current firmware for the SNAP-PAC-SB1 brain. Current firmware for all SNAP PAC brains and controllers is available in a single download here. See the ...more

SNAP-PAC-S2-W Controller Firmware

Downloads - 10/15/2025

This download contains current firmware for the SNAP-PAC-S2-W controller. Current firmware for all SNAP PAC brains and controllers is available in a single download here. See the...more

SNAP-PAC-S2 Controller Firmware

Downloads - 10/15/2025

This download contains current firmware for the SNAP-PAC-S2 controller. Current firmware for all SNAP PAC brains and controllers is available in a single download here. See the...more

SNAP-PAC-S1-W Controller Firmware

Downloads - 10/15/2025

This download contains current firmware for the SNAP-PAC-S1-W controller. Current firmware for all SNAP PAC brains and controllers is available in a single download here. See the ...more

SNAP-PAC-S1 Controller Firmware

Downloads - 10/15/2025

This download contains current firmware for the SNAP-PAC-S1 and SNAP-PAC-S1-FM controllers. Current firmware for all SNAP PAC brains and controllers is available in a single download here. See the...more

SNAP-PAC-R2-W Controller Firmware

Downloads - 10/15/2025

This download contains current firmware for the SNAP-PAC-R2-W controller. Current firmware for all SNAP PAC brains and controllers is available in a single download here. See the...more

SNAP-PAC-R2 Controller Firmware

Downloads - 10/15/2025

This download contains current firmware for the SNAP-PAC-R2 controllers. Current firmware for all SNAP PAC brains and controllers is available in a single download here. See the...more

SNAP-PAC-R1-W Controller Firmware

Downloads - 10/15/2025

This download contains current firmware for the SNAP-PAC-R1-W controller. Current firmware for all SNAP PAC brains and controllers is available in a single download here. See the ...more

SNAP-PAC-R1 Controller Firmware

Downloads - 10/15/2025

This download contains a zip file with current firmware for the SNAP-PAC-R1 (including the GEN2 edition), SNAP-PAC-R1-B, and SNAP-PAC-R1-FM controllers. There are two firmware files for SNAP-PAC-R1....moreThis download contains a zip file with current firmware for the SNAP-PAC-R1 (including the GEN2 edition), SNAP-PAC-R1-B, and SNAP-PAC-R1-FM controllers. There are two firmware files for SNAP-PAC-R1. To determine which SNAP-PAC-R1 firmware file to install on your controller, you must first determine if you have a GEN2 controller by using one of the following methods: Look for "GEN2" on the top of the controller. Use PAC Manager to find the Installed Ram value: In PAC Manager, click Tools > Inspect, or click the Inspect button. In the Inspect Opto 22 Device window, enter the IP address for the SNAP-PAC-R1 controller, or select it from the Device Name list. Look for the Installed Ram value. If the value is 268435456, you have a GEN2 controller. If you have a GEN2 controller, install the firmware file called snap-pac-r1-gen2-R10.5g.bin using PAC Manager R10.5c (or higher). For all other SNAP-PAC-R1 controllers, install the snap-pac-r1-R10.5g.bin firmware file. Current firmware for all SNAP PAC brains and controllers is available in a single download here. See the README document for information on changes and fixes in the current version of this product's firmware. To install firmware, use the most recent release of PAC Manager (you can download the latest version from the Opto 22 website). Older versions of PAC Manager cannot install certain levels of firmware on controllers and brains shipped after certain dates or with certain versions of firmware currently installed on them. Some SNAP-PAC-R1 controllers shipped after August 26, 2024 require firmware R10.5g (or higher) and new bootloader firmware. For instructions on identifying these controllers (referred to as GEN2), review the README document. SNAP R-series controllers shipped after February 22, 2022 shipped with new Ethernet components, PAC firmware R10.4d (or higher), and new bootloader firmware. For more information about minimum firmware requirements and installation requirements, review the README document. SNAP R-series controllers shipped after April 2, 2018 shipped with new flash components, PAC firmware R9.5g (or higher), and new bootloader firmware. Lower versions of firmware are not compatible with these controllers. For instructions on recovering controllers that are accidentally installed with lower versions of firmware, review the README document. <less