# \[Bug-13262\] Vision - Signal Generator Miscalculates Upper Bound When Lower Bound Is Non-Zero

**URL:** <https://forum.inductiveautomation.com/t/bug-13262-vision-signal-generator-miscalculates-upper-bound-when-lower-bound-is-non-zero/23519>\
**Category:** Ignition Early Access\
**Created:** [March 21, 2019, 7:08pm UTC](https://forum.inductiveautomation.com/t/bug-13262-vision-signal-generator-miscalculates-upper-bound-when-lower-bound-is-non-zero/23519 "2019-03-21T19:08:24Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![grietveld](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/grietveld/32/6984_2.png) [@grietveld](https://forum.inductiveautomation.com/u/grietveld)\
**Post date:** [March 21, 2019, 7:08pm UTC](https://forum.inductiveautomation.com/t/bug-13262-vision-signal-generator-miscalculates-upper-bound-when-lower-bound-is-non-zero/23519/1 "2019-03-21T19:08:24Z")

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I’ve been adjusting the bounds a bit to try and figure out what the values are off by, but the signal generator seems to be scaling the bounds incorrectly.

The lower bound works fine, but the value will exceed the upper bound and go to the sum of the lower and upper bound, and then start returning back towards the lower bound.

![image](https://us1.discourse-cdn.com/inductiveautomation/original/2X/e/e43f4d32a86e8438ca33fcbefbfbf8fe4c780edc.png)

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**Author:** ![cmallonee](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/cmallonee/32/6416_2.png) [@cmallonee](https://forum.inductiveautomation.com/u/cmallonee)\
**Post date:** [March 21, 2019, 8:30pm UTC](https://forum.inductiveautomation.com/t/bug-13262-vision-signal-generator-miscalculates-upper-bound-when-lower-bound-is-non-zero/23519/2 "2019-03-21T20:30:50Z")

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Thank you for the screenshot - it made this very easy to replicate! I’ll open an internal ticket.

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**Author:** ![m.lee.beavers.ieee](https://avatars.discourse-cdn.com/v4/letter/m/839c29/32.png) [@m.lee.beavers.ieee](https://forum.inductiveautomation.com/u/m.lee.beavers.ieee)\
**Post date:** [July 22, 2021, 3:11am UTC](https://forum.inductiveautomation.com/t/bug-13262-vision-signal-generator-miscalculates-upper-bound-when-lower-bound-is-non-zero/23519/3 "2021-07-22T03:11:13Z")

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was there any resolution to this ticket?