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Add modbus sensor page
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source/components/sensor.modbus.markdown
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52
source/components/sensor.modbus.markdown
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---
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layout: page
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title: "Modbus sensors support"
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description: "Instructions how to integrate Modbus sensors into Home Assistant."
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date: 2015-08-30 23:38
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sidebar: false
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comments: false
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sharing: true
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footer: true
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---
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<img src='/images/supported_brands/modbus.png' class='brand pull-right' />
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The modbus sensor platform allows you to gather data from your [Modbus](http://www.modbus.org/) sensors.
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To use your Modbus sensors in your installation, add the following to your `configuration.yaml` file:
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```yaml
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# Example configuration.yml entry
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sensor:
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platform: modbus
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slave: 1
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registers:
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16:
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name: My integer sensor
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unit: C
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24:
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bits:
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0:
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name: My boolean sensor
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2:
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name: My other boolean sensor
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coils:
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0:
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name: My coil switch
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```
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Configuration variables:
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- **slave** (*Required*): The number of the slave (ignored and can be omitted if not serial Modbus).
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- **registers** array (*Required*): The array contains a list of relevant registers to read from.
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- **number of register** (*Required*): Listing relevant bits. It must contain a `bits` section.
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- **bits** array (*Required*): Listing relevant bits. It must contain a `bits` section.
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- **name** (*Required*): Name of the sensor.
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- **unit** (*Required*): Unit to attach to value (optional, ignored for boolean sensors).
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- **coils** (*Optional*): A list of relevant coils to read from/write to
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- **number of coil** array (*Required*):
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- **name** (*Required*): Name of the coil.
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<p class='note warning'>
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Each named register will create an integer sensor and each named bit will create a boolean sensor.
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</p>
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