# Expression Tag that Writes to OPC Address (PLC)

**URL:** <https://forum.inductiveautomation.com/t/expression-tag-that-writes-to-opc-address-plc/43614>\
**Category:** Ignition\
**Created:** [February 19, 2021, 1:25pm UTC](https://forum.inductiveautomation.com/t/expression-tag-that-writes-to-opc-address-plc/43614 "2021-02-19T13:25:21Z")\
**Posts on this page:** 1\
**Showing post:** 7

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**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [February 19, 2021, 2:05pm UTC](https://forum.inductiveautomation.com/t/expression-tag-that-writes-to-opc-address-plc/43614/7 "2021-02-19T14:05:46Z")

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Turned into a tag change script on upgrade.

See [[13069] - Write value to Opc item feature for Expression Tags is no longer available in 8.0](http://forum.inductiveautomation.com/t/13069-write-value-to-opc-item-feature-for-expression-tags-is-no-longer-available-in-8-0/23112/5)

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