# How to calculate the difference in KWH values received every 5 min from modbus data and save it as a new values in csv

**URL:** https://discourse.nodered.org/t/how-to-calculate-the-difference-in-kwh-values-received-every-5-min-from-modbus-data-and-save-it-as-a-new-values-in-csv/33274
**Category:** General
**Created:** [24 September 2020 09:40 UTC](https://discourse.nodered.org/t/how-to-calculate-the-difference-in-kwh-values-received-every-5-min-from-modbus-data-and-save-it-as-a-new-values-in-csv/33274 "2020-09-24T09:40:16Z")
**Posts on this page:** 1
**Showing post:** 7

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### Author: ![Energycharges](https://avatars.discourse-cdn.com/v4/letter/e/e47c2d/32.png) [@Energycharges](https://discourse.nodered.org/u/Energycharges)
#### Post date: [26 September 2020 09:30 UTC](https://discourse.nodered.org/t/how-to-calculate-the-difference-in-kwh-values-received-every-5-min-from-modbus-data-and-save-it-as-a-new-values-in-csv/33274/7 "2020-09-26T09:30:40Z")

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Can anyone guide me and help to find solution

Appreciate , your effort in notifying the issue

thank you ! 😃 😃

Energycharges

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