111 lines
2.7 KiB
Markdown
111 lines
2.7 KiB
Markdown
# KNX Cover Control with Inverted Position Feedback (Home Assistant Blueprint)
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This Home Assistant blueprint allows you to control a `cover` entity via KNX group addresses
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(Up/Down and Stop) and sends an **inverted position feedback in percent** back to KNX.
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It is designed for installations where KNX uses:
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- `0 % = fully open`
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- `100 % = fully closed`
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while Home Assistant uses:
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- `0 % = fully closed`
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- `100 % = fully open`
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So the feedback is automatically inverted:
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- HA `0 %` → KNX `100 %`
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- HA `50 %` → KNX `50 %`
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- HA `100 %` → KNX `0 %`
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The feedback is sent whenever the cover position changes, no matter if the movement was
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triggered from KNX or directly from Home Assistant.
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---
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## Features
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- Control a Home Assistant cover via:
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- KNX Up/Down group address (1 bit, DPT 1.xxx)
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- KNX Stop group address (1 bit, DPT 1.xxx)
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- Send inverted position feedback to KNX:
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- KNX position feedback group address (DPT 5.001, Percent 0…100)
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- Optional inversion of Up/Down direction
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- Optional feedback cooldown to reduce KNX bus traffic
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- Fully configurable via UI (no YAML editing needed after import)
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---
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## Installation
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Copy the blueprint file into:
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```/config/blueprints/automation/bahmcloud/```
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Example filename:
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```knx_cover_with_inverted_feedback.yaml```
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Then restart Home Assistant or reload automations.
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---
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## Create an Automation
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1. Go to
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**Settings → Automations & Scenes → Blueprints**
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2. Select **"KNX Cover Control + Inverted Position Feedback (%)"**
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3. Click **Create automation**
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4. Fill in:
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- Cover entity
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- KNX group address Up/Down
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- KNX group address Stop
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- KNX position feedback (%) group address
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- (Optional) Invert Up/Down direction
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- (Optional) Feedback cooldown
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Create one automation per cover.
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---
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## KNX Group Address Mapping (ETS)
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| Function | KNX Object Type | DPT |
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|----------------------|-----------------|----------|
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| Up / Down | 1 Bit | DPT 1.xxx |
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| Stop / Step | 1 Bit | DPT 1.xxx |
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| Position Feedback % | 1 Byte | DPT 5.001 |
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---
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## Example Logic
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| Home Assistant | KNX Feedback |
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|---------------|-------------|
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| 0 % (closed) | 100 % |
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| 25 % | 75 % |
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| 50 % | 50 % |
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| 75 % | 25 % |
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| 100 % (open) | 0 % |
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---
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## Requirements
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- Home Assistant ≥ 2026.1
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- KNX integration configured and working
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- Cover entity with `current_position` attribute
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---
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## Use Case
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Perfect for KNX wall switches and touch panels that show the blind position in percent
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and expect:
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> 0 % = open, 100 % = closed
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while Home Assistant internally works the opposite way.
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---
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## License
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MIT – free to use, modify and distribute. |