# Send DATA to S7-1200 Problem
**URL:** https://discourse.nodered.org/t/send-data-to-s7-1200-problem/98894
**Category:** General
**Created:** [30 August 2025 17:49 UTC](https://discourse.nodered.org/t/send-data-to-s7-1200-problem/98894 "2025-08-30T17:49:08Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@kaan86](https://discourse.nodered.org/u/kaan86)
#### Post date: [30 August 2025 17:49 UTC](https://discourse.nodered.org/t/send-data-to-s7-1200-problem/98894/1 "2025-08-30T17:49:08Z")
Hi
I am new with Node-RED 😉 i am trying to send data from Shelly plug to s7-1200 PLC but i keep getting “Data for item of type 'INT' must be a number” error.
I have Debug in parallel where the data gets to as a number. Whey do i get the error when on the S7 out node?
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### Author:  [@marcus-j-davies](https://discourse.nodered.org/u/marcus-j-davies)
#### Post date: [30 August 2025 18:06 UTC](https://discourse.nodered.org/t/send-data-to-s7-1200-problem/98894/2 "2025-08-30T18:06:23Z")
Welcome to the forums @kaan86
You will need to specify the exact name(s) (or link) to the shelly node you're using, the potential person to provide the answer, may not use shelly at all - but with knowing your full setup, may be able to to identify the issue - maybe provide a link to the node, so the community can review the Node.
A screenshot does nothing 😃
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### Author:  [@Colin](https://discourse.nodered.org/u/Colin)
#### Post date: [30 August 2025 18:26 UTC](https://discourse.nodered.org/t/send-data-to-s7-1200-problem/98894/3 "2025-08-30T18:26:22Z")
Or if the problem is when writing to the plc then tell us which node you are using for that.
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### Author:  [@kaan86](https://discourse.nodered.org/u/kaan86)
#### Post date: [30 August 2025 19:06 UTC](https://discourse.nodered.org/t/send-data-to-s7-1200-problem/98894/4 "2025-08-30T19:06:15Z")
Can this help? I link the input to payload.switch0.freq from the shelly…
And the connection to the PLC works i can change the value of i tried with a inject node it works..
 
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### Author:  [@Colin](https://discourse.nodered.org/u/Colin)
#### Post date: [30 August 2025 20:51 UTC](https://discourse.nodered.org/t/send-data-to-s7-1200-problem/98894/5 "2025-08-30T20:51:19Z")
If i works with 10 in msg.payload then insert a Change node configured to Move msg.payload.switch0.freq To msg.payload. Check in a debug node that then the required number appears in msg.payload and then feed that to the S7 node.
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### Author:  [@kaan86](https://discourse.nodered.org/u/kaan86)
#### Post date: [31 August 2025 09:32 UTC](https://discourse.nodered.org/t/send-data-to-s7-1200-problem/98894/6 "2025-08-31T09:32:11Z")
That did the job. Thanks
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### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [14 September 2025 09:33 UTC](https://discourse.nodered.org/t/send-data-to-s7-1200-problem/98894/7 "2025-09-14T09:33:02Z")
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