Skip to main content
A
AA_1397805912-Amethyst
12-Amethyst
December 17, 2025
Solved

Several tags are missing when Tag Generation import

  • December 17, 2025
  • 1 reply
  • 287 views

Hello,

I am experiencing an issue when browsing/importing OPC UA server tags into Kepware. Several tags that are present on the OPC UA server do not appear in Kepware after the browse/import process.

Details:

  • The missing tags are not visible in the Kepware browse tree, so I cannot import/add them to my datalogger.

  • I have verified the tags exist and are accessible from the OPC UA server side.

  • I also confirmed using UAExpert that the missing tags are readable, and their data type is Float (so they do not appear to be unsupported types).

Could you please advise what could cause Kepware to omit certain OPC UA nodes during browsing/import, and which Kepware settings or troubleshooting steps I should review to ensure all tags are discovered and available for import?

Thank you.

 

However, when running Tag Generation, it gives warning message of data type unknownHowever, when running Tag Generation, it gives warning message of data type unknownWhen try to import, the tags are shown in imported itemsWhen try to import, the tags are shown in imported itemsOPC-UA Server has tags under folder AHU/01 such as RA_RH, RA_T, SA_RH, etc.OPC-UA Server has tags under folder AHU/01 such as RA_RH, RA_T, SA_RH, etc.The final results, several tags are missing.The final results, several tags are missing.I check the datatype on the OPC-UA server and all configured as "Native"I check the datatype on the OPC-UA server and all configured as "Native"But after I check the others tag's dataype (like Airflow tag, etc), it also configured as "Native"But after I check the others tag's dataype (like Airflow tag, etc), it also configured as "Native"However the other tags (like Airflow) still inserted properlyHowever the other tags (like Airflow) still inserted properly

Best answer by AA_13978059

AA_13978059_0-1765961730667.png

Solved, Thanks.

1 reply

A
AA_1397805912-AmethystAuthor
12-Amethyst
December 17, 2025

Hello,

I have an update based on additional testing.

I am able to see the previously missing tags in OPC Quick Client within Kepware, which suggests the OPC UA connection and browsing are working and the server is exposing the tags correctly. However, when I try to add/select these same tags for the Datalogger, they still do not appear (or cannot be selected), so I am unable to include them in logging.

Could you please advise:

Why a tag would be visible in OPC Quick Client but not available/visible for selection in the Datalogger? Whether there are any Datalogger limitations or filters (e.g., data type support, quality requirements, access rights, tag naming/length, browse settings, channel/device configuration) that could prevent certain OPC UA items from being added for logging? Any recommended troubleshooting steps to identify what is blocking these specific tags from being added?

Thank you.

OPC Quick Client shows the missing tagOPC Quick Client shows the missing tagUA expert running time also can access the tag, however only datalogger that cannot access it.UA expert running time also can access the tag, however only datalogger that cannot access it.

A
AA_1397805912-AmethystAuthorAnswer
12-Amethyst
December 17, 2025

AA_13978059_0-1765961730667.png

Solved, Thanks.

Catalina
CatalinaCommunity Manager
Community Moderator
December 17, 2025

Hello @AA_13978059 

 

Happy to hear that! Could you also please detail how your issue got resolved, please? This will help other members that may also experience these issues in the future.

 

Thanks,

Catalina | PTC Community Moderator
Terms & ConditionsCookie settingsAccessibility statement