# Last published value is "null, Uncertain\_InitialValue..." in the tag Editor **URL:** \ **Category:** Ignition\ **Tags:** ignition80\ **Created:** [January 14, 2025, 2:34pm UTC](https://forum.inductiveautomation.com/t/last-published-value-is-null-uncertain-initialvalue-in-the-tag-editor/100858 "2025-01-14T14:34:34Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![616958939](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/616958939/32/16900_2.png) [@616958939](https://forum.inductiveautomation.com/u/616958939)\ **Post date:** [January 14, 2025, 2:34pm UTC](https://forum.inductiveautomation.com/t/last-published-value-is-null-uncertain-initialvalue-in-the-tag-editor/100858/1 "2025-01-14T14:34:35Z")
Ignition Designer: ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/f/b/fb54311636293e2fd3c8f4b3661a0455b404ee18.png) ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/b/a/bad1a1f2919ae9ab3eaf94992d0c1cb504b34294.png) Ignition gateway: ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/5/c/5cb7a78f68797ec2dfe2cae68a2b41aa0d7798e3.png) ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/e/4/e4957b0afbc8cdd7a72b09e6d4a6fb0680389aa2.png) The ignition gateway can read the data from the opc server , but tag browser show null value in the first picture? ---
**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:** [January 14, 2025, 2:39pm UTC](https://forum.inductiveautomation.com/t/last-published-value-is-null-uncertain-initialvalue-in-the-tag-editor/100858/2 "2025-01-14T14:39:30Z")
Presumably this means KSE hasn't sent a PublishResponse containing values for those tags yet for some reason. In the QC you're just doing a read, not a subscribe, so it's different. It doesn't look like anything is wrong with your Ignition configuration, so it might be a Kepware issue. If you can turn off security for the connection and get a Wireshark capture we can verify that the Subscription and Monitored Items get created but no values are received. ---
**Author:** ![616958939](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/616958939/32/16900_2.png) [@616958939](https://forum.inductiveautomation.com/u/616958939)\ **Post date:** [January 14, 2025, 3:25pm UTC](https://forum.inductiveautomation.com/t/last-published-value-is-null-uncertain-initialvalue-in-the-tag-editor/100858/3 "2025-01-14T15:25:26Z")
![wireshark](https://us1.discourse-cdn.com/inductiveautomation/original/3X/a/5/a55a09059fd4bbf66e67ae20a5b75a2f3a78a7a5.jpeg) ![wireshark2](https://us1.discourse-cdn.com/inductiveautomation/original/3X/c/5/c505ede2b07f35010c00ab556f8c6c874a0260f5.jpeg) The IP address of the opc server is 192.168.150.23 and the ignition gateway is 192.168.150.4 ---
**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:** [January 14, 2025, 3:27pm UTC](https://forum.inductiveautomation.com/t/last-published-value-is-null-uncertain-initialvalue-in-the-tag-editor/100858/4 "2025-01-14T15:27:34Z")
A screenshot is not sufficient. Please post the actual PCAP file, or send it to IA support. ---
**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:** [January 14, 2025, 3:54pm UTC](https://forum.inductiveautomation.com/t/last-published-value-is-null-uncertain-initialvalue-in-the-tag-editor/100858/5 "2025-01-14T15:54:01Z")
We'll need the PCAP file. Make sure you start the capture and then edit/save the connection once you are recording so that the Subscription and Monitored Item creation is captured. ---
**Author:** ![616958939](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/616958939/32/16900_2.png) [@616958939](https://forum.inductiveautomation.com/u/616958939)\ **Post date:** [January 15, 2025, 4:05am UTC](https://forum.inductiveautomation.com/t/last-published-value-is-null-uncertain-initialvalue-in-the-tag-editor/100858/6 "2025-01-15T04:05:26Z")
[pacp.rar](https://forum.inductiveautomation.com/uploads/short-url/a9AT3Ezy2XPgmo4MlDEXPvgULyu.rar) (2.4 MB) The file size is too big, so I had compress it. 7Z or WinRAR can uncompress it. ---
**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:** [January 15, 2025, 2:13pm UTC](https://forum.inductiveautomation.com/t/last-published-value-is-null-uncertain-initialvalue-in-the-tag-editor/100858/7 "2025-01-15T14:13:21Z")
This capture only contains traffic for an existing connection, not a new one that includes subscription and item creation by edit/saving in Ignition. It doesn't contain any PublishResponses with data change notifications, but that doesn't mean anything because they aren't immediately following the subscription and items being created. ---
**Author:** ![616958939](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/616958939/32/16900_2.png) [@616958939](https://forum.inductiveautomation.com/u/616958939)\ **Post date:** [January 20, 2025, 12:41am UTC](https://forum.inductiveautomation.com/t/last-published-value-is-null-uncertain-initialvalue-in-the-tag-editor/100858/8 "2025-01-20T00:41:07Z")
there was a login error : IllegalArgumentException: Cannot create PyString with non-byte value ![39c1fc1861aa6e2fb98db61b25f27df](https://us1.discourse-cdn.com/inductiveautomation/original/3X/1/8/1800feb0f430ae79cbcb43c215d267d442716f04.png) It is not work after restart the vision module in gateway