# Query modbus registers for SMA Inverter without crash

**URL:** https://discourse.nodered.org/t/query-modbus-registers-for-sma-inverter-without-crash/32788
**Category:** General
**Created:** [12 September 2020 17:19 UTC](https://discourse.nodered.org/t/query-modbus-registers-for-sma-inverter-without-crash/32788 "2020-09-12T17:19:06Z")
**Posts on this page:** 1
**Showing post:** 19

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### Author: ![Becker](https://avatars.discourse-cdn.com/v4/letter/b/c77e96/32.png) [@Becker](https://discourse.nodered.org/u/Becker)
#### Post date: [13 September 2020 09:51 UTC](https://discourse.nodered.org/t/query-modbus-registers-for-sma-inverter-without-crash/32788/19 "2020-09-13T09:51:38Z")

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@UnborN  
there is something wrong with the Join Node:

 ![grafik](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/8/3/837b9e6db7393084a2c5c23da7b226320cef22ca.png)

 ![grafik](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/3/5/35b7cb245081099dec91fc3c518b1ce512f92522.png)

I can´t add two values, see: [Adding two values](https://discourse.nodered.org/t/adding-two-values/32784/2)

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