# Spinner does not change PLC value

**URL:** <https://forum.inductiveautomation.com/t/spinner-does-not-change-plc-value/5302>\
**Category:** Ignition\
**Created:** [October 22, 2012, 3:19pm UTC](https://forum.inductiveautomation.com/t/spinner-does-not-change-plc-value/5302 "2012-10-22T15:19:43Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![pbrandt](https://avatars.discourse-cdn.com/v4/letter/p/bbe5ce/32.png) [@pbrandt](https://forum.inductiveautomation.com/u/pbrandt)\
**Post date:** [October 22, 2012, 3:19pm UTC](https://forum.inductiveautomation.com/t/spinner-does-not-change-plc-value/5302/1 "2012-10-22T15:19:43Z")

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I am working on a new PID control screen and the spinners that I have put on do not change the online value in the PLC. The spinner does apear to read the value and change it on my PID screen but doesn’t write it to the PLC. We have Version 7.5.0  
Thanks.

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**Author:** ![AlThePal](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/althepal/32/3603_2.png) [@AlThePal](https://forum.inductiveautomation.com/u/AlThePal)\
**Post date:** [October 22, 2012, 3:22pm UTC](https://forum.inductiveautomation.com/t/spinner-does-not-change-plc-value/5302/2 "2012-10-22T15:22:31Z")

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Do you have the ‘Bidirectional’ option ticked on your value binding?

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**Author:** ![nathan](https://avatars.discourse-cdn.com/v4/letter/n/c5a1d2/32.png) [@nathan](https://forum.inductiveautomation.com/u/nathan)\
**Post date:** [October 22, 2012, 4:17pm UTC](https://forum.inductiveautomation.com/t/spinner-does-not-change-plc-value/5302/3 "2012-10-22T16:17:03Z")

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Also, if you’re working in the Designer, ensure that Gateway communication is set to read-write.