# SQLtags lost connection **URL:** \ **Category:** Ignition\ **Created:** [January 14, 2013, 9:13am UTC](https://forum.inductiveautomation.com/t/sqltags-lost-connection/5681 "2013-01-14T09:13:19Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Brett\_Yeomans](https://avatars.discourse-cdn.com/v4/letter/b/35a633/32.png) [@Brett\_Yeomans](https://forum.inductiveautomation.com/u/Brett_Yeomans)\ **Post date:** [January 14, 2013, 9:13am UTC](https://forum.inductiveautomation.com/t/sqltags-lost-connection/5681/1 "2013-01-14T09:13:19Z")
I had an issue where 3 SQLtags stopped updating and displayed the green icon with the question mark. All 3 had the value of null. The PLC was showing as connected and I found that by altering the address the different value was read then when the original address was put back the tag read as it had been doing for x months with no problem? Any reason why this should have occured ![:scratch:](https://us1.discourse-cdn.com/inductiveautomation/original/1X/76d1620bec252bfac07050c889ff5a91dc8a9c25.gif ":scratch:") I am using Ignition 7.5.1 Secondly, this PLC does get down powered during the week. ---
**Author:** ![greg.simpson](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/greg.simpson/32/3135_2.png) [@greg.simpson](https://forum.inductiveautomation.com/u/greg.simpson)\ **Post date:** [January 15, 2013, 4:21pm UTC](https://forum.inductiveautomation.com/t/sqltags-lost-connection/5681/2 "2013-01-15T16:21:25Z")
What PLC are you using? ---
**Author:** ![Travis.Cox](https://avatars.discourse-cdn.com/v4/letter/t/b9bd4f/32.png) [@Travis.Cox](https://forum.inductiveautomation.com/u/Travis.Cox)\ **Post date:** [January 15, 2013, 4:57pm UTC](https://forum.inductiveautomation.com/t/sqltags-lost-connection/5681/3 "2013-01-15T16:57:45Z")
You should really upgrade to 7.5.5 since we have made some changes to our drivers.