# \[BUG\] v8.1.5 AB Logix driver - Tags that are written and reset by PLC in 1 scan remain **URL:** \ **Category:** Ignition\ **Tags:** ignition81\ **Created:** [June 3, 2021, 2:19am UTC](https://forum.inductiveautomation.com/t/bug-v8-1-5-ab-logix-driver-tags-that-are-written-and-reset-by-plc-in-1-scan-remain/47378 "2021-06-03T02:19:07Z")\ **Posts on this page:** 3\ **Page:** 2
**Author:** ![danFromNj](https://avatars.discourse-cdn.com/v4/letter/d/76d3ee/32.png) [@danFromNj](https://forum.inductiveautomation.com/u/danFromNj)\ **Post date:** [August 13, 2024, 7:07pm UTC](https://forum.inductiveautomation.com/t/bug-v8-1-5-ab-logix-driver-tags-that-are-written-and-reset-by-plc-in-1-scan-remain/47378/21 "2024-08-13T19:07:41Z")
I seem to have found that part of the issue is the Fallback Delay in the binding. I had an issue in the past where this fallback delay seemed too long and it was delaying an update. At the time, setting this to a low value (0.2s) "fixed" that issue. With the slider, it was definitely causes the jump. I reset the fallback delay to 2.5s and the jumpiness of the slider stopped. I have toggle buttons on the window and they respond slower than I would like. These toggle buttons use the control value to determine color. For example, if the control value is 0 the button is red and if the value 1 1 the button is green. If the control value is 0 and I click the button, the value of 1 is written to the control value tag. It takes a second for the button to change color. I would think that setting "optimistic write" to true would be the solution but it doesn't seem to help. Does anyone have a best practice setting for tag group and binding properties that seems to leave them with a responsive feeling HMI? Thanks ---
**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:** [August 13, 2024, 7:28pm UTC](https://forum.inductiveautomation.com/t/bug-v8-1-5-ab-logix-driver-tags-that-are-written-and-reset-by-plc-in-1-scan-remain/47378/22 "2024-08-13T19:28:04Z")
> [@danFromNj](#): > > that seems to leave them with a responsive feeling HMI? The most important thing is to make sure you are actually polling at the desired pace--no overload on the device's diagnostics. If not, fix that first. Start here, read all the inner links, too: > [@Ignition & Logix Best Practice Tips for better communications](https://forum.inductiveautomation.com/t/ignition-logix-best-practice-tips-for-better-communications/60386): > > Hi All, After a whole bunch of issues I have gone down the rabbit hole of what is wrong with our setup on site. I will preface this by saying I a relatively new to all of this.... so be gentle stuck_out_tongue Based on much reading(such wow) I believe I have a list of things our site could take away for a better system. Some of them are easy to implement, whilst some of them need... significant work to realize. Especially the AOI approach in point 5 expressionless Before going too far a… ---
**Author:** ![jlandwerlen](https://avatars.discourse-cdn.com/v4/letter/j/bc8723/32.png) [@jlandwerlen](https://forum.inductiveautomation.com/u/jlandwerlen)\ **Post date:** [August 13, 2024, 10:03pm UTC](https://forum.inductiveautomation.com/t/bug-v8-1-5-ab-logix-driver-tags-that-are-written-and-reset-by-plc-in-1-scan-remain/47378/23 "2024-08-13T22:03:16Z")
I've always had problems with the slider component. Sometimes it doesn't read correctly until I move the slider. It's the only component that I have seen behave this way. I stopped using them for that reason. [Previous page](https://forum.inductiveautomation.com/t/bug-v8-1-5-ab-logix-driver-tags-that-are-written-and-reset-by-plc-in-1-scan-remain/47378.md?page=1)