# Slider bar default value after device re-start

**URL:** <https://forum.inductiveautomation.com/t/slider-bar-default-value-after-device-re-start/33387>\
**Category:** General Discussion\
**Created:** [March 25, 2020, 5:16am UTC](https://forum.inductiveautomation.com/t/slider-bar-default-value-after-device-re-start/33387 "2020-03-25T05:16:25Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![nicholas.robinson](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/nicholas.robinson/32/22188_2.png) [@nicholas.robinson](https://forum.inductiveautomation.com/u/nicholas.robinson)\
**Post date:** [March 25, 2020, 5:16am UTC](https://forum.inductiveautomation.com/t/slider-bar-default-value-after-device-re-start/33387/1 "2020-03-25T05:16:25Z")

</div>

I have a modbus device (VFD) and two of the parameters to control it are “Freq” and “Ramp” which I have bound to tags via slider input components. From the controller side, I only read from those modbus holding registers, I never write to them from the device.

If everything is running and I restart the device, the slider bar values automatically change from whatever value they were set at to ‘0’. What is causing this and how can I either maintain the slider value on re-start or have a default start value other than ‘0’?

Thanks,

Nick