Opto22 - Resources & Tools

Clear All Latches command may cause processor/controller reset

Knowledge Base - KB90702 - 10/6/2023

If your PAC Control strategy uses the Clear All Latches command on a SNAP I/O unit that has unconfigured points or empty module positions, the groov EPIC processor or SNAP PAC controller will reset.

I/O unit incorrectly reports communication enabled after power cycle

Knowledge Base - KB90689 - 10/6/2023

After an I/O unit cycles power and your PAC Control strategy tests if the I/O unit is available with the Is I/O Unit Ready? and I/O Unit Communication Enabled?, the I/O unit may incorrectly report communication as enabled.

Publishing data to MQTT Server may be very slow or may stop

Knowledge Base - KB90675 - 8/31/2023

In the situations with frequent reconnections (for example, network or MQTT server instability), you may observe that data publishing to MQTT server slows down or stops.

Some channel configurations may not restore from persistent memory

Knowledge Base - KB90696 - 8/31/2023

If you configure channels on through groov Manage and then restart the groov RIO module or groov EPIC processor, one or more of the I/O channel configurations may not be restored from persistent memory.

MQTT string protocol fails to write floats to analog outputs, timers, and float variables

Knowledge Base - KB90648 - 8/31/2023

If you enable the “Use Comma for Decimal Separator” option when you configure the MQTT String protocol in Data Service, when the protocol writes floats to analog outputs, float variables, and timers, the writes will fail.

When MQTT Sparkplug sends out updates stored in historic queue, other protocols may slow down

Knowledge Base - KB90644 - 8/31/2023

In the event of an MQTT server outage that affects groov EPIC's MQTT client configured with Sparkplug payloads, after service is restored and the MQTT client starts sending out the updates stored in...more

Data Service performance may slow down on networks with weak connections

Knowledge Base - KB90692 - 8/31/2023

On rare occasions, particularly in spotty networks or frequent MQTT broker failures, you may observe a degradation in performance of MQTT (either Sparkplug or String payloads).

Pages may display out of order in View mode's page menu

Knowledge Base - KB90712 - 9/19/2023

In View mode, when you click on the navigation icon, the pages may be displayed incorrectly, with categories appearing multiple times and each instance displaying a different page.

When PAC Control controller is restarted on groov EPIC, some types of numeric variables lose values

Knowledge Base - KB90704 - 8/31/2023

If a PAC Control strategy is running on a groov EPIC processor and has persistent numeric variables, when you cycle power to the EPIC, those persistent variables lose their values.

CODESYS Development System may not recognize activated licenses on groov EPIC after upgrading to firmware version 3.5.0 or higher

Knowledge Base - KB90626 - 8/18/2023

API communication failures after upgrading to groov EPIC firmware version 3.5.0

Knowledge Base - KB90605 - 8/17/2023

If PAC Control strategy contains HTTP Get/Post commands with SSL, PAC controller and other services may restart

Knowledge Base - KB90620 - 7/29/2023

If your PAC Control strategy contains HTTP Get or HTTP Post commands with SSL as the security mode, you may observe that various groov Manage services (including the PAC Controller) restart.

A simulated counter on a groov EPIC I/O unit or groov RIO provides erratic results

Knowledge Base - KB90673 - 7/29/2023

If a PAC Control strategy includes a groov RIO or groov I/O unit that is either not physically available to the system or is currently configured in the strategy with communication to the I/O unit...more

E1 or E2 periodically does not respond to a command (Ethernet)

Knowledge Base - KB90668 - 10/4/2023

This issue is infrequent and only occurs roughly 0.01% of the time. If your control program is communicating to an E2 using Ethernet, periodically, you may observe that the E1 or E2 does not...more

Time does not adjust to Daylight Savings Time (DST) for Egypt

Knowledge Base - KB90615 - 2/12/2024

Tag status updates from MQTT are erratic or delayed when Sparkplug payload compression is enabled

Knowledge Base - KB90669 - 8/17/2023

If you configured MQTT Sparkplug to use payload compression (on the MQTT Sparkplug configuration page, you select either GZip or Deflate for the Compression field), you may notice that tag updates are delayed or erratic.

Tags added to server through OptoBrowser Configurator not immediately available to client

Knowledge Base - KB90457 - 7/6/2023

When you add tags to OptoOPCServer through the OptoBrowser Configurator, the tags should be immediately available to the clients. With this issue, the tags are available only if you restart the server.

Energy accumulation and summation values not restored after reset or restart

Knowledge Base - KB90663 - 8/17/2023

The energy accumulation values (provided through channels 13-17, 31-35, and 49-53) and the energy summation values (provided through channels 54-62) are not automatically saved to non-volatile memory...more

groov View can't access tags on an OPC UA server

Knowledge Base - KB90619 - 7/28/2023

In Build mode, when you click on an OPC UA device to browse tags on that server, the tag browser displays the message "Loading tags..." for an indefinite amount of time. In View mode, attempts to read from or write to OPC UA tags fail.

"between" conditional format rule doesn't work if larger value in left field

Knowledge Base - KB90531 - 7/28/2023

Upgrading a groov View project to R4.4 may result in 503 HTTP error

Knowledge Base - KB90582 - 7/28/2023

On rare occasions, upgrading a groov View project to version 4.4 of groov View may result in an HTTP ERROR 503 Service Unavailable error.

Change to "No Tag" not applied to gadgets, events, or computed tags

Knowledge Base - KB90439 - 7/28/2023

If you choose "No Tag" in either of the following situations, groov View doesn't make the change nor apply the selection.

PAC Manager: On Generic Read/Write page, error when using write-only address or navigating with Tab key

Knowledge Base - KB90538 - 7/6/2023

You may see "Error reading area: The I/O Unit does not support this area." or "Enter valid scaling values." while working in the Generic Read/Write page of the Inspect Opto 22 Device window of PAC Manager.

PAC Display Runtime: Crash on close after triggering and acknowledging an alarm

Knowledge Base - KB90577 - 7/6/2023

You may observe that PAC Display Runtime crashes on exit after an alarm is triggered and then acknowledged.

Parameter values incorrectly changed when pasting blocks from one strategy into another strategy

Knowledge Base - KB90545 - 7/6/2023

When you copy blocks from one strategy to another strategy, the values of numeric or string literals parameters used in some commands may have changed. This issue happens when either numeric literals...more