# Unknown node type "uc-iodataIn" and "uc-iodataOut"

**URL:** <https://discourse.nodered.org/t/unknown-node-type-uc-iodatain-and-uc-iodataout/61920>\
**Category:** General\
**Created:** [28 April 2022 10:34 UTC](https://discourse.nodered.org/t/unknown-node-type-uc-iodatain-and-uc-iodataout/61920 "2022-04-28T10:34:47Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![NodeNoobbb](https://avatars.discourse-cdn.com/v4/letter/n/73ab20/32.png) [@NodeNoobbb](https://discourse.nodered.org/u/NodeNoobbb)\
**Post date:** [28 April 2022 10:34 UTC](https://discourse.nodered.org/t/unknown-node-type-uc-iodatain-and-uc-iodataout/61920/1 "2022-04-28T10:34:48Z")

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I am with a project in which there are some unknown nodes, "uc-iodataIn" and "uc-iodataOut", could someone tell me what library I have to use to make them work?

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**Author:** ![zenofmud](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/zenofmud/32/316_2.png) [@zenofmud](https://discourse.nodered.org/u/zenofmud)\
**Post date:** [28 April 2022 11:34 UTC](https://discourse.nodered.org/t/unknown-node-type-uc-iodatain-and-uc-iodataout/61920/2 "2022-04-28T11:34:18Z")

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You really need to provide more information, remember no one but you can see what you are doing.

Did you try a google search using `uc-iodataIn`?  
If so, what results did you find? If not, why not?

Those maybe nodes provided by the hardware manufacturer, so you may need to contact them.

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**Author:** ![jbudd](https://avatars.discourse-cdn.com/v4/letter/j/5f8ce5/32.png) [@jbudd](https://discourse.nodered.org/u/jbudd)\
**Post date:** [28 April 2022 11:59 UTC](https://discourse.nodered.org/t/unknown-node-type-uc-iodatain-and-uc-iodataout/61920/3 "2022-04-28T11:59:21Z")

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I tried a google search and found only a Python library.

But there is a mention of uc-iodataIn in a post from Dec 2021 [Extracting data from an array](https://discourse.nodered.org/t/extracting-data-from-an-array/52365)

If the poster, @Bastian is still around, maybe he can advise you.

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**Author:** ![zenofmud](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/zenofmud/32/316_2.png) [@zenofmud](https://discourse.nodered.org/u/zenofmud)\
**Post date:** [28 April 2022 12:57 UTC](https://discourse.nodered.org/t/unknown-node-type-uc-iodatain-and-uc-iodataout/61920/4 "2022-04-28T12:57:25Z")

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There is also a flow example  
[https://flows.nodered.org/flow/a22d74d343f30807d82630bff2856a58](https://flows.nodered.org/flow/a22d74d343f30807d82630bff2856a58)  
but it doesn't explain what the name of the node is or where to get it.

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**Author:** ![Bastian](https://avatars.discourse-cdn.com/v4/letter/b/779978/32.png) [@Bastian](https://discourse.nodered.org/u/Bastian)\
**Post date:** [16 June 2022 13:00 UTC](https://discourse.nodered.org/t/unknown-node-type-uc-iodatain-and-uc-iodataout/61920/5 "2022-06-16T13:00:13Z")

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Hi there.

The Node-RED environment of a company called Weidmüller uses similar customized iodata-in and iodata-out nodes on their automation control.

Checking for uc-iodata nodes I get the following:  
[https://flows.nodered.org/flow/a22d74d343f30807d82630bff2856a58](https://flows.nodered.org/flow/a22d74d343f30807d82630bff2856a58)

They are used to transfer data from the real time system of the automation control to the Node-RED instance which is running on a second non-realtime instance. Those nodes don't seem to make sense without the Weidmüller hardware.

Regards

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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:** [15 August 2022 13:00 UTC](https://discourse.nodered.org/t/unknown-node-type-uc-iodatain-and-uc-iodataout/61920/6 "2022-08-15T13:00:24Z")

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