# Momentary Pushbutton latching ON

**URL:** <https://forum.inductiveautomation.com/t/momentary-pushbutton-latching-on/5373>\
**Category:** Ignition\
**Created:** [November 2, 2012, 10:23pm UTC](https://forum.inductiveautomation.com/t/momentary-pushbutton-latching-on/5373 "2012-11-02T22:23:15Z")\
**Posts on this page:** 1\
**Showing post:** 41

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**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:** [May 1, 2018, 2:36pm UTC](https://forum.inductiveautomation.com/t/momentary-pushbutton-latching-on/5373/41 "2018-05-01T14:36:27Z")

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> [@sbrannen](#):
>
> In testing, I have (as yet) been unable to cause the bit to latch after well over a thousand mouse clicks whereas I was able to easily cause a latch after just a few dozen clicks without the OPC Read After Write option selected.

Interesting. The failure to write when not checking is far more common that even I thought.

> [@pturmel](#):
>
> gateway-client comms failures, window closure while pressed, and GUI freezes

You are still vulnerable to any of these, and to gateway-plc comms failure at the OPC level.

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