Data value reset when power off in flexy 205

Hi friends,
I’m doing caculate totolizer base on analog input card in flexy 205 .
In my script have summary in tag memory .
But the problem when the power in flexy off and on again.
totalzier is reset .
How to solve and retain data in last ?
thanks for your support

When you are in the tag setup, when you select MEM as the IOServer, right next to it you will have a topic field, select RET from the dropdown. That will retain the value across power cycles.

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