# Write to Handshake using a tag

**URL:** <https://forum.inductiveautomation.com/t/write-to-handshake-using-a-tag/6084>\
**Category:** Ignition\
**Created:** [March 22, 2013, 5:27pm UTC](https://forum.inductiveautomation.com/t/write-to-handshake-using-a-tag/6084 "2013-03-22T17:27:05Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Curlyandshemp](https://avatars.discourse-cdn.com/v4/letter/c/bcef8e/32.png) [@Curlyandshemp](https://forum.inductiveautomation.com/u/Curlyandshemp)\
**Post date:** [March 22, 2013, 5:27pm UTC](https://forum.inductiveautomation.com/t/write-to-handshake-using-a-tag/6084/1 "2013-03-22T17:27:05Z")

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the ability to write to a tag upon succesful handshake action of trigger from an SQL Tag rather a hard coded value.

There are times i need to send a value to the PLC that not only has the transaction occured, but perform another action such as reset shift totals. In this case I would send the Clock’s Hour to the PLC as my successful trigger, and at a particular hour , reset shifts.

I have been having issues getting a success trigger and the hour change to arrive at the PLC at the same time.

 ![](https://us1.discourse-cdn.com/inductiveautomation/original/2X/3/32975c13456c600406369fadd36c0055ffeb91be.jpg)