# Monitoring OPC UA tag for update (Kepware tag) **URL:** \ **Category:** Ignition\ **Tags:** ignition81, vision\ **Created:** [March 11, 2025, 4:09pm UTC](https://forum.inductiveautomation.com/t/monitoring-opc-ua-tag-for-update-kepware-tag/103518 "2025-03-11T16:09:05Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![Nicole\_McCormack](https://avatars.discourse-cdn.com/v4/letter/n/b77776/32.png) [@Nicole\_McCormack](https://forum.inductiveautomation.com/u/Nicole_McCormack)\ **Post date:** [March 11, 2025, 4:09pm UTC](https://forum.inductiveautomation.com/t/monitoring-opc-ua-tag-for-update-kepware-tag/103518/1 "2025-03-11T16:09:06Z")
I have tried several ways to look for updates on a tag from Kepware. I send an enable bit and once the action is done, kepware sets the bit low. How can I poll/trigger on that bit being set low? I was setting the bit with a checkbox just to test and the checkbox never resets itself (doesn't see the change coming back from Kepware). I've tried scripting to read the tag from kepware but don't have a good trigger for the read. ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [March 11, 2025, 4:10pm UTC](https://forum.inductiveautomation.com/t/monitoring-opc-ua-tag-for-update-kepware-tag/103518/2 "2025-03-11T16:10:55Z")
Do you have an OPC tag created for this bit? How are you writing to it? ---
**Author:** ![Nicole\_McCormack](https://avatars.discourse-cdn.com/v4/letter/n/b77776/32.png) [@Nicole\_McCormack](https://forum.inductiveautomation.com/u/Nicole_McCormack)\ **Post date:** [March 11, 2025, 4:12pm UTC](https://forum.inductiveautomation.com/t/monitoring-opc-ua-tag-for-update-kepware-tag/103518/3 "2025-03-11T16:12:52Z")
Yes, the write works and the tool receiving it enables, then gets disabled after action is taken. But that bit being cleared in Kepware doesn't reflect back in my checkbox or data that I'm seeing. The clearing of the enable bit doesn't happen until the operator completes the action so the time is variable. ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [March 11, 2025, 4:13pm UTC](https://forum.inductiveautomation.com/t/monitoring-opc-ua-tag-for-update-kepware-tag/103518/4 "2025-03-11T16:13:28Z")
What are the tag group settings this tag belongs to? ---
**Author:** ![Nicole\_McCormack](https://avatars.discourse-cdn.com/v4/letter/n/b77776/32.png) [@Nicole\_McCormack](https://forum.inductiveautomation.com/u/Nicole_McCormack)\ **Post date:** [March 11, 2025, 4:16pm UTC](https://forum.inductiveautomation.com/t/monitoring-opc-ua-tag-for-update-kepware-tag/103518/5 "2025-03-11T16:16:52Z")
It is a gateway opc tag from kepserver ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [March 11, 2025, 4:18pm UTC](https://forum.inductiveautomation.com/t/monitoring-opc-ua-tag-for-update-kepware-tag/103518/6 "2025-03-11T16:18:05Z")
What are the Tag Group settings though? Figure out what Tag Group it belongs to, then open the Tag Group editor and take a screenshot of its settings. ---
**Author:** ![Nicole\_McCormack](https://avatars.discourse-cdn.com/v4/letter/n/b77776/32.png) [@Nicole\_McCormack](https://forum.inductiveautomation.com/u/Nicole_McCormack)\ **Post date:** [March 11, 2025, 4:21pm UTC](https://forum.inductiveautomation.com/t/monitoring-opc-ua-tag-for-update-kepware-tag/103518/7 "2025-03-11T16:21:39Z")
![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/3/f/3f8099dd1aeeaa5c5639c38bd393d0beae0b3d2b.png) ---
**Author:** ![Transistor](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/transistor/32/3380_2.png) [@Transistor](https://forum.inductiveautomation.com/u/Transistor)\ **Post date:** [March 11, 2025, 4:23pm UTC](https://forum.inductiveautomation.com/t/monitoring-opc-ua-tag-for-update-kepware-tag/103518/8 "2025-03-11T16:23:28Z")
> [@Kevin.Herron](#): > > Figure out what Tag Group it belongs to, You've done this bit. It's "Default". > **then open the Tag Group editor** and take a screenshot of its settings. You missed this bit - but it's probably 1000 ms. ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [March 11, 2025, 4:29pm UTC](https://forum.inductiveautomation.com/t/monitoring-opc-ua-tag-for-update-kepware-tag/103518/9 "2025-03-11T16:29:29Z")
I just want to make sure the "Read After Write" setting isn't enabled in combination with Polled/Read mode. Otherwise this sounds like a Kepware problem 🤷‍♂️ ---
**Author:** ![Nicole\_McCormack](https://avatars.discourse-cdn.com/v4/letter/n/b77776/32.png) [@Nicole\_McCormack](https://forum.inductiveautomation.com/u/Nicole_McCormack)\ **Post date:** [March 11, 2025, 4:36pm UTC](https://forum.inductiveautomation.com/t/monitoring-opc-ua-tag-for-update-kepware-tag/103518/10 "2025-03-11T16:36:12Z")
? ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/6/9/69ef3c806abee7f0fac215a35efe48c64a7bfa47.png) ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [March 11, 2025, 4:41pm UTC](https://forum.inductiveautomation.com/t/monitoring-opc-ua-tag-for-update-kepware-tag/103518/11 "2025-03-11T16:41:31Z")
Yes, that's the screenshot we're looking for. There doesn't seem to be anything wrong with how you have Ignition configured. If the OPC tag you created never sees its value return to `false` then I would imagine it's an issue on the Kepware side...