# Edge can get OPC tag name, but can not get value **URL:** \ **Category:** Ignition\ **Tags:** ignition81\ **Created:** [November 11, 2025, 12:17am UTC](https://forum.inductiveautomation.com/t/edge-can-get-opc-tag-name-but-can-not-get-value/112086 "2025-11-11T00:17:09Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![chentaoko](https://avatars.discourse-cdn.com/v4/letter/c/e79b87/32.png) [@chentaoko](https://forum.inductiveautomation.com/u/chentaoko)\ **Post date:** [November 11, 2025, 12:17am UTC](https://forum.inductiveautomation.com/t/edge-can-get-opc-tag-name-but-can-not-get-value/112086/1 "2025-11-11T00:17:09Z")
Dear sir: I’m a beginner and would like to ask for help from the experts. I connected to an OPC Client from Edge using the OPC DA method. The OPC Client passes tag information obtained from the OPC Server to Edge. However, I can only get the tag names in edge but not their values. Could any expert please help me understand why this is happening? ![2025-11-11_081625](https://us1.discourse-cdn.com/inductiveautomation/original/3X/c/6/c62b98758147d41c3707d95d02be3e89d5c8e022.png) ---
**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\ **Post date:** [November 11, 2025, 12:26am UTC](https://forum.inductiveautomation.com/t/edge-can-get-opc-tag-name-but-can-not-get-value/112086/2 "2025-11-11T00:26:25Z")
Some OPC DA servers are buggy, and don't do "subscribe" properly. Try the `[r]` to see if you can do a poll read. If so, set an Ignition tag group to use OPC Reads instead of subscriptions and put the tags in this group. ---
**Author:** ![chentaoko](https://avatars.discourse-cdn.com/v4/letter/c/e79b87/32.png) [@chentaoko](https://forum.inductiveautomation.com/u/chentaoko)\ **Post date:** [November 11, 2025, 12:40am UTC](https://forum.inductiveautomation.com/t/edge-can-get-opc-tag-name-but-can-not-get-value/112086/4 "2025-11-11T00:40:35Z")
Dear sir: I press [r] and show bad\_notconnected ![2025-11-11_083855](https://us1.discourse-cdn.com/inductiveautomation/original/3X/2/7/278f9aa2719892f36c5d887b7629f242fd4f7488.png) ---
**Author:** ![chentaoko](https://avatars.discourse-cdn.com/v4/letter/c/e79b87/32.png) [@chentaoko](https://forum.inductiveautomation.com/u/chentaoko)\ **Post date:** [November 11, 2025, 1:55am UTC](https://forum.inductiveautomation.com/t/edge-can-get-opc-tag-name-but-can-not-get-value/112086/5 "2025-11-11T01:55:17Z")
![2025-11-11_095504](https://us1.discourse-cdn.com/inductiveautomation/original/3X/a/6/a6e169228e4b221eaac99a005a71ed0d47833dd4.png) I found a clue: in the OPC Client’s **Distributed COM Users Properties** , the **Members** list is empty. What I mean is — do both computers need to have members added under **Distributed COM Users Properties**? Could this be the cause of the problem? ---
**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\ **Post date:** [November 11, 2025, 1:17pm UTC](https://forum.inductiveautomation.com/t/edge-can-get-opc-tag-name-but-can-not-get-value/112086/6 "2025-11-11T13:17:30Z")
Someone else with have to chime in. You've exhausted my knowledge of OPC DA problems and my willingness to work on anything related to Windows. ---
**Author:** ![Cody\_Morgan](https://avatars.discourse-cdn.com/v4/letter/c/db5fbb/32.png) [@Cody\_Morgan](https://forum.inductiveautomation.com/u/Cody_Morgan)\ **Post date:** [November 11, 2025, 5:49pm UTC](https://forum.inductiveautomation.com/t/edge-can-get-opc-tag-name-but-can-not-get-value/112086/7 "2025-11-11T17:49:55Z")
It sounds like you're hitting this problem described in the user manual: [connection-status-is-connected-but-data-quality-is-bad-or-the-connection-goes-faulted-after-trying-to-read-tag-data](https://www.docs.inductiveautomation.com/docs/8.3/ignition-modules/opc-ua/third-party-opc-servers/opc-com#connection-status-is-connected-but-data-quality-is-bad-or-the-connection-goes-faulted-after-trying-to-read-tag-data) That section references this section on how to configure DCOM settings on the Ignition machine: > **[OPC COM | Ignition User Manual](https://www.docs.inductiveautomation.com/docs/8.3/ignition-modules/opc-ua/third-party-opc-servers/opc-com#ignition-server-dcom-settings)** > > Connecting to OPC Classic (COM) I have never had to deal with COM, but the security settings described in the user manual seem very loose. I'd imagine that it could be locked down a little tighter, but start with the recommendations in that section before trying to tighten down the permissions. ---
**Author:** ![chentaoko](https://avatars.discourse-cdn.com/v4/letter/c/e79b87/32.png) [@chentaoko](https://forum.inductiveautomation.com/u/chentaoko)\ **Post date:** [November 13, 2025, 2:43am UTC](https://forum.inductiveautomation.com/t/edge-can-get-opc-tag-name-but-can-not-get-value/112086/8 "2025-11-13T02:43:39Z")
It works! thanks so much, sir