# Bacnet Write block

**URL:** <https://discourse.nodered.org/t/bacnet-write-block/81118>\
**Category:** General\
**Created:** [7 September 2023 17:58 UTC](https://discourse.nodered.org/t/bacnet-write-block/81118 "2023-09-07T17:58:37Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![AndrewTw](https://avatars.discourse-cdn.com/v4/letter/a/c68b51/32.png) [@AndrewTw](https://discourse.nodered.org/u/AndrewTw)\
**Post date:** [7 September 2023 17:58 UTC](https://discourse.nodered.org/t/bacnet-write-block/81118/1 "2023-09-07T17:58:37Z")

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Hi  
I am new to Node-Red and am trying to use the bacnet node. I can get the read to work and the write to work. What I can't figure out is how to put a value into the write block. To clarify (I hope) the write block works when I use the value in the properties box. Can anyone help?

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**Author:** ![E1cid](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/e1cid/32/77971_2.png) [@E1cid](https://discourse.nodered.org/u/E1cid)\
**Post date:** [7 September 2023 18:33 UTC](https://discourse.nodered.org/t/bacnet-write-block/81118/2 "2023-09-07T18:33:02Z")

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Hi Andrew and welcome to the forum.

I have never used Bacnet nodes, But most inputs for nodes can be sent in msg.payload, or you may be able to set input to msg.property name. Can you show a image of the bacnet write node config. Also what does the sidebar help text say?

The may also be examples in menu import \> examples.  
This topic may help

> [@Use external value for BACnet write node?](https://discourse.nodered.org/t/use-external-value-for-bacnet-write-node/42469/1):
>
> I have been using the node-red-contrib-bacnet library and everything is working perfectly, I can read and write values to my BACnet controller without an issue. I do have one problem though, I cant figure out how to use the value from another node like a timestamp as the value that is sent by the BACnet write node. When I do it like this it writes the value perfectly: But it does not work at all when I try to use the msg.payload from another node: I have tested the msg.payload it…

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**Author:** ![AndrewTw](https://avatars.discourse-cdn.com/v4/letter/a/c68b51/32.png) [@AndrewTw](https://discourse.nodered.org/u/AndrewTw)\
**Post date:** [8 September 2023 15:33 UTC](https://discourse.nodered.org/t/bacnet-write-block/81118/3 "2023-09-08T15:33:43Z")

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Hi

Many thanks for the prompt response. The topic is exactly my problem I was just hoping for a simpler solution!

I have spent my career using function block programming to programme Siemens Air conditioning controls so have never needed to code.

I guess I’ll just have to play around with it. Thanks again.

 ![Capture.JPG](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/2/b/2b81751fe61e730a6e2b4c3278755354238626f2.jpeg)

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**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [7 November 2023 15:33 UTC](https://discourse.nodered.org/t/bacnet-write-block/81118/4 "2023-11-07T15:33:44Z")

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