Opto22 - Resources & Tools

In Ignition, dragging a tag into the Tag Browser changes status to Uncertain_LastKnownValue

Knowledge Base - KB91274 - 8/21/2025

In Ignition, when you drag a tag with a known good quality to the Tag Browser, the quality of the tag may change to Uncertain_LastKnownValue.

Port redirect configuration disappears after updating firmware or restoring a backup

Knowledge Base - KB91270 - 8/22/2025

If you perform a firmware update with Backup Settings enabled or restore a backup, the port redirect configuration and rules are lost.

Port Redirect configuration not restored after power cycle

Knowledge Base - KB91262 - 8/21/2025

If port redirection is configured, and later power is cycled or you restart the unit using groov Manage, the configuration is lost.

groov Manage incorrectly reports Ignition 8 as disabled

Knowledge Base - KB91261 - 8/21/2025

Ignition may not start

Knowledge Base - KB91252 - 8/21/2025

When you try to enable Ignition or Ignition Edge, you may observe that Ignition doesn't start or, if Ignition does start, and then you restart your RIO, Ignition may not start.

Possible strategy corruption in PAC Control after copying/pasting OptoScript block with PID loop

Knowledge Base - KB91105 - 10/24/2025

If you copy an OptoScript block with a PID loop from one strategy and paste it into another strategy, you may encounter an “Undefined Command” error when attempting to download the strategy.

PAC Control strategies may not compile after renaming variables in OptoScript blocks

Knowledge Base - KB91238 - 10/24/2025

When attempting to compile a strategy after renaming an existing variable used in an OptoScript block in PAC Control, the strategy may not compile.

Size > “Height to Tallest” adjusts gadgets to shortest gadget

Knowledge Base - KB91180 - 11/19/2025

In Build mode, when you select a group of gadgets and then right-click to select Size > Height to Tallest, groov View should adjust the height of all the gadgets in the group to match the height of...more

Updating module firmware in PAC Manager may fail if firmware filename contains a parenthesis

Knowledge Base - KB91213 - 10/24/2025

When attempting to install module firmware in PAC Manager, you may encounter a “Command Failed” error message if the module firmware filename contains a parenthesis.

The Closing Window Setup dialog in PAC Display hangs and cannot be dismissed

Knowledge Base - KB91221 - 10/24/2025

When clicking on a graphical dynamic object that jointly closes a window in PAC Display and performs an I/O (read or write) operation, a Closing Window Setup dialog may appear that cannot be dismissed.

groov EPIC's LCD becomes unresponsive when external monitor is connected

Knowledge Base - KB91228 - 8/21/2025

When you connect an external monitor to a groov EPIC's HDMI port, the EPIC's LCD screen may go blank and becomes unresponsive.

Data Service reports connection errors when scanning string area of Scratchpad

Knowledge Base - KB91212 - 6/20/2025

Time is not restored correctly when the processor boots up

Knowledge Base - KB91227 - 6/20/2025

When the processor boots up, the time is not restored correctly. If NTP is configured and NTP servers are accessible, the correct time will be restored quickly enough that you might not notice this issue.

Some pages in groov Manage display "server offline" message

Knowledge Base - KB91222 - 6/20/2025

Configured PID loops do not appear correctly in PAC Manager

Knowledge Base - KB91132 - 10/24/2025

When you configure a new PID loop in PAC Manager, it may appear at the top of the configuration tree instead of in the PIDs folder under I/O Units.

Edition set incorrectly for Ignition 8 after upgrading firmware to version 4.0.0

Knowledge Base - KB91207 - 6/11/2025

Using the Copy To > Fill in I/O Unit feature creates points not associated with a module and crashes PAC Control

Knowledge Base - KB91205 - 10/24/2025

When configuring your I/O points in PAC Control using the Copy To > Fill in I/O Unit feature on the Configure I/O Modules and Points window, the Strategy Tree may be populated with copies that are...more

Duplicating graphic objects in PAC Display may fail with a misleading error message

Knowledge Base - KB91187 - 10/24/2025

When using the Duplicate function (Edit > Duplicate) to copy graphic objects in PAC Display, the graphics may fail to copy, and a misleading error message appears.

GRV-OACS-12 LED channel indicators do not illuminate properly

Knowledge Base - KB91209 - 6/2/2025

The LED channel indicators of affected GRV-OACS-12 modules may not illuminate properly.

CODESYS licenses missing after installing firmware

Knowledge Base - KB91189 - 6/3/2025

Some SNAP analog input modules report only NaN or -32768 to B3000-series brains

Knowledge Base - KB91204 - 5/29/2025

When any of the affected SNAP analog input modules are used with SNAP-B3000, SNAP-B3000-B, or SNAP-B3000-B-OMUX brains, the modules report only -32768 or NaN.

Installing firmware version 4.0.0 (or higher) with Ignition 8 fails at Decompression step

Knowledge Base - KB91192 - 6/11/2025

If you try to install version 4.0.0 (or higher) with Ignition 8 (for example, grv-epic-pr1-ignition8-4.0.0-b.106.field.bin) on a GRV-EPIC-PR1 that already has any version of Ignition, the installation...more

I/O Batch Operations page on GRV-R7-I1VAPM-3 has options that do not apply

Knowledge Base - KB91016 - 6/11/2025

The I/O Batch Operations page in groov Manage contains options that do not apply to GRV-R7-I1VAPM-3

PAC Control REST API stops responding to requests, reports error -113 (Unknown Error)

Knowledge Base - KB91190 - 6/11/2025

After running without issue for a period of time, requests sent to the PAC Control REST API on a groov EPIC will stop working, returning error -113 (Unknown error has occurred). The control engine on the groov EPIC may stop responding.

After a Wi-Fi configuration change, reconnection may take a long time

Knowledge Base - KB91051 - 6/11/2025

After changing the Wi-Fi configuration, the Wi-Fi connection may take up to five minutes to resume.