# HMI Momentary button Gets stuck with N/O Bit of PLC **URL:** \ **Category:** General Discussion\ **Created:** [December 12, 2018, 9:05pm UTC](https://forum.inductiveautomation.com/t/hmi-momentary-button-gets-stuck-with-n-o-bit-of-plc/21388 "2018-12-12T21:05:43Z")\ **Posts on this page:** 1\ **Showing post:** 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:** [December 12, 2018, 9:31pm UTC](https://forum.inductiveautomation.com/t/hmi-momentary-button-gets-stuck-with-n-o-bit-of-plc/21388/4 "2018-12-12T21:31:41Z")
This thread, going back some years, is the most detailed discussion of the problem: > [@Momentary Pushbutton latching ON](http://forum.inductiveautomation.com/t/momentary-pushbutton-latching-on/5373): > > Using Ignition V7.3.8. Gateway Windows 7 pro, and two clients connected. Both clients touch screen PCs. gateway connected to only 1 Contrologix. One screen has a Start and Stop Momentary pushbuttons used to start and stop a process. Start bit is a BOOL to PLC, stop bit is a BOOL to PLC. Classic start/stop circuit being used in PLC. When start or stop button is pressed, the dashed moving box appears around the pushbutton for about 1 second. Probably the default scan class. Received a phone ca… Another thread on this issue -- somewhat heated at points: > [@Very Concerning Read/Write Issues. Important information for all users](http://forum.inductiveautomation.com/t/very-concerning-read-write-issues-important-information-for-all-users/18583): > > Hello Ignition Members, Disclaimer - All of our senior designers/programmers are qualified for their jobs where I work. These problems are described as I see them, they may not be exactly what happened. Therefor they are to be used for troubleshooting the issue only. Thank you. We are in contact with some ignition developers and are desperately trying to fix this problem. This is a GLOBAL problem therefore it won’t be affecting just us. It may be affecting anyone who is using ignition well. Ti… --- _[View the full topic](https://forum.inductiveautomation.com/t/hmi-momentary-button-gets-stuck-with-n-o-bit-of-plc/21388)._