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ModBus Sensor marked unknown if getting NaN #38235

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@crug80 crug80 commented Mar 27, 2025

Proposed change

In case of getting NaN value, the sensor is marked as unknown, instead of unavailable. This because a NaN is obviously an answer, so the device is on and available.

Type of change

  • Spelling, grammar or other readability improvements (current branch).
  • Adjusted missing or incorrect information in the current documentation (current branch).
  • Added documentation for a new integration I'm adding to Home Assistant (next branch).
  • Added documentation for a new feature I'm adding to Home Assistant (next branch).
  • Removed stale or deprecated documentation.

Additional information

Checklist

  • This PR uses the correct branch, based on one of the following:
    • I made a change to the existing documentation and used the current branch.
    • I made a change that is related to an upcoming version of Home Assistant and used the next branch.
  • The documentation follows the Home Assistant documentation standards.

Summary by CodeRabbit

  • Documentation
    • Updated the sensor configuration description for handling NaN values, clarifying that sensors are now marked as "unknown" when triggered, rather than "unavailable".

@home-assistant home-assistant bot added has-parent This PR has a parent PR in a other repo next This PR goes into the next branch labels Mar 27, 2025
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coderabbitai bot commented Mar 27, 2025

📝 Walkthrough

Walkthrough

The Modbus integration documentation has been updated to modify the description of the nan_value parameter in the sensors configuration. The text now indicates that when a sensor’s defined NaN value is triggered, the sensor becomes unknown rather than unavailable. All other details in the description remain unchanged.

Changes

File Change Summary
source/_integrations/modbus.markdown Updated the nan_value parameter description: it now states that the sensor becomes unknown when triggered.

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Reviewing files that changed from the base of the PR and between 4aa11fc and 0889bd4.

📒 Files selected for processing (1)
  • source/_integrations/modbus.markdown (1 hunks)
🔇 Additional comments (1)
source/_integrations/modbus.markdown (1)

1401-1404: Documented sensor state update for NaN values aligns with new behavior.
The updated description clearly states that when the nan_value is triggered, the sensor becomes unknown rather than unavailable, which meets the PR objective. Please confirm that the underlying sensor state logic in Home Assistant reflects this change.


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✅ Approved. Can be merged as soon as the parent PR gets merged.

@github-project-automation github-project-automation bot moved this from Todo to Approved in Documentation PRs Apr 14, 2025
@frenck frenck added the awaits-parent Awaits the merge of an parent PR label Apr 14, 2025
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