Get value of parameter from device | Home Assistant | Page 1

burnt current Mar 14, 2025, 5:02 PM

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Hello! I want to check the value of a parameter in a zwave-device. The value is cached and shown in zwave-js-ui, and I am happy to get it from there if possible.
The value is to be used in an automation, but I cannot figure out how to get the value. Is this a supported action?

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For example, I might want to get the value of "3-111-0-keyCacheTimeout" to my automation

mild lantern Mar 14, 2025, 5:07 PM

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I think it's not easy.

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The one way I've done something like this in the past is to use MQTT with zjsui, and each parameter can be subscribed as a mqtt topic.

burnt current Mar 14, 2025, 5:09 PM

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Ah. I am hoping that there is another way, since I am not using mqtt. I would also like to get the value synchronously (almost) from inside the automation, as waiting for a value update from mqtt might be difficult

mild lantern Mar 14, 2025, 5:10 PM

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In theory zwave integration could make a service action to get a parameter and return it in the service response.
No idea if that's ever been considered.

burnt current Mar 14, 2025, 5:13 PM

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I am sort of thinking that I cannot be the first to wish to do things this way 🙂 So either there has to be a way that I am missing, or it might be time for a feature request..

mild lantern Mar 14, 2025, 5:14 PM

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https://www.home-assistant.io/integrations/zwave_js/#zwave_jsvalue_updated

Maybe this can help, I don't know.

burnt current Mar 14, 2025, 5:17 PM

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Sadly I don't think so, I would have to use a helper sensor for each of the 30 values I want to keep track of and have automations to update them

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So the result would be quite messy

marsh crystal Mar 14, 2025, 5:35 PM

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Support for entry control CC is already in the backlog, and some work is being done. https://github.com/zwave-js/certification-backlog/issues/14

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Action responses did not exist in HA when the z-wave integration services were originally added, so a synchronous Get was never a possibility. You're currently stuck with the async refresh + value updated triggers mentioned. I don't think there would be any pushback for someone to implement it.

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Here's a similar feature request submitted previously: https://community.home-assistant.io/t/add-response-data-for-zwave-js-invoke-cc-api/589161

burnt current Mar 14, 2025, 5:42 PM

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Okay, thank you. I'll check what is being done and see if I can contribute somewhere

#Get value of parameter from device