Opto 22 - Resources & Tools

Hello all. Hoping someone here is able to lend some insight. Have a epic PR2, and using codesys to make the program. When trying to connect to it for the first time to upload the program, codesys will...more

Node-red to CSV

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Hi, This stems from another post, I am new to node-red I have set up a node red flow to bring in data from codesys using OPC-UA. This works well. I am then compinging all the data to produce a csv file...more

groov View does not send emails after upgrading to 4.1.0

Knowledge Base - KB91427 - 4/1/2026

After upgrading to version 4.1.0, groov View no longer sends emails on event activations.

Digital input latching with pointers

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I know i can use pointers to point at digital input states, but can I do the same for digital input latching states (IsOnLatchSet)? I am trying to use pointers in optoscript and everything I’m trying says error or type mismatch. Thanks!...

Groov RIO 4.1.0 Firmware Released

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Greetings forum fans! Riding the wave of the 4.0 kernel jump, we’ve just released version 4.1.0 for the groov RIO MM1, MM2, and EMU. The big 4.0 was about major foundational changes, 4.1 is where we get...more

Codesys IMAI-8 inputs not matching Groov Manage

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I have an IMAI-8 that with 7 channels being used. In Groov Manage I see miliamp values on the channels image993×548 11.4 KB However in Codesys most of the channels are are NaN for zero miliamp...more

Csv File from Groov View using NodeRed from Codesys Tag

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Hi, I have a codesys program on a groov epic that am trying to get data to a USB key. From a previous post it seems that Codesys program cannot access the USB Key directly on the EPIC without doing some...more

Access / Create CSV to USB Key on Grrov EPIC

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I am creating a function inside Codesys that will Collect data from tags inside Codesys and export / place them in a csv file on a USB drive that is connected to the USB port on the EPIC PR1. The code...more

When Node-RED and groov View (groov EPIC only) are disabled, Uptime and Last Started fields in groov Manage display incorrect values

Knowledge Base - KB91414 - 4/1/2026

When Node-RED and groov View (groov EPIC only) are disabled, the Uptime and Last started fields on their respective groov Manage pages may display incorrect values.

Groov EPIC PAC Control MoveIoUnitToNumTableEx on Groov EPIC — Correct Usage and Table Sizing

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I wanted to share some findings on using MoveIoUnitToNumTableEx with a Groov EPIC controller, as the correct usage wasn’t immediately obvious and I had trouble finding documentation specific to the EPIC....more

Groov RIO does NOT reset

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I have a groov rio. I bought as an experiment approximately 1.5 years ago. I have physical access to the device. The credentials I saved in my password vault do not work. I am unable to factory...more

Edge Historian to Main Gateway Missing Data

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I have an Edge device talking to another Gateway. My main Gateway showed the edge device connected. Some tags were updating historical data and others were not (store and forward). When I tried to...more

Variables or direct IO for HMIs and making values public

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I’m sure this topic has been covered here, and I’ve read many “knowledgeable” AI suggestions…. I am trying to lay a solid foundation for the future. The current project is using a groovEPIC PR2 and all...more

LDAP user permissions

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User accounts are set up an the Enterprise level. I have set up my seven EPIC systems for LDAP, Permissions Mapping. Assigning a group to the user with editor permission works. User login can open...more

PAC Control OptoScript IDE Font

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A question with no rush! (for once) I am a very frequent user of PAC Control and do a lot of OptoScript. I’ve always documented my code relatively well, but now am trying to do an even better job. In...more

User Audit and access control

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I have several EPIC systems running Node-RED. Each system is set up for LDAP with Permissions Mapping. A user belonging to a group which permits “Editor” is able to open Node-RED Editor. This...more

Case Study: Stopping Leaks Before They Stop Production

Documents - 2449 - 2/6/2026

View in HTML With miles of mining pipelines in Peru, national regulations require continuous monitoring to prevent spills and ensure safe operation. For mining companies, this means the search is on...more

SNAP-PAC-R2 STAT LED Blinking Red 4 Times - Unable to Assign IP (Ethernet & Serial Failed)

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Hello everyone, I am trying to commission a SNAP-PAC-R2 controller. My primary goal is to establish a TCP/IP connection and assign an IP address to bring the device online. However, the controller is...more

RIO integer scratchpad won't allow saving values above 0x7FFFFFFF

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Are we supposed to be able to write negative numbers in groov manage to the integer scratchpad as hexadecimal? Largest number it allows is 0x7FFFFFFF. Firmware 4.0.3-b.283 image632×637 21.2 KB...

PID-Loop Stopped Working

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I’m troubleshooting an existing project at customer site that had a functional PID-loop which has stopped automatically updating it’s output. It is a PAC-R1 controller, however, I noticed it does have...more

Lost connection to Ignition

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I was examining my Cert in Ignition and realized it was the wrong one for use with LDAP. I deleted that Cert and now I cannot “open Ignition” from groov manage. Do you have a solution? Thanks...

Video: Who's groovin' EP2. Morro Bay

Videos - 4/9/2026

In this Who's groovin' episode, learn how the City of Morro Bay used groov EPIC® and groov View to unifyi disparate controls from different brands onto a...more

Video: Who's groovin' EP1. Moriroku

Videos - 4/9/2026

In this Who's groovin' episode, learn how Moriroku® Technology North America (MTNA) used groov RIO to integrate a diverse fleet of over 100 machines into a centralized, real...more

Recommendations on managing different devices across the company

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Hello, I have an effort to deploy these across the company, replacing our SNAP-PAC-S2. The reason I’m doing this is to replace our PC, which use OptoDisplay with Ignition Edge as the HMI. However, each...more

Who's groovin' EP3. Surety Automation

Videos - 4/9/2026

In this Who's groovin' episode, learn how Surety Automation used groov RIO to give mine operators the complete visibility and control over the entire underground health of the mine. For more details, download case study pdf