home-assistant.io/source/_components/switch.modbus.markdown
2016-05-07 13:58:27 +02:00

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---
layout: page
title: "Modbus Switch"
description: "Instructions how to integrate Modbus switches into Home Assistant."
date: 2015-08-30 23:38
sidebar: true
comments: false
sharing: true
footer: true
logo: modbus.png
ha_category: Switch
ha_release: pre 0.7
---
The `modbus` switch platform allows you to control [Modbus](http://www.modbus.org/) switches.
To use your Modbus switches in your installation, add the following to your `configuration.yaml` file:
```yaml
# Example configuration.yml entry
switch:
platform: modbus
slave: 1
registers:
24:
bits:
0:
name: My switch
2:
name: My other switch
coils:
0:
name: My coil switch
```
Configuration variables:
- **slave** (*Required*): The number of the slave (ignored and can be omitted if not serial Modbus).
- **registers** array (*Required*): The array contains a list of relevant registers to read from.
- **number of register** (*Required*): Listing relevant bits. It must contain a `bits` section.
- **bits** array (*Required*): Listing relevant bits. It must contain a `bits` section.
- **name** (*Required*): Name of the switch.
- **coils** (*Optional*): A list of relevant coils to read from/write to
- **number of coil** array (*Required*):
- **name** (*Required*): Name of the coil.
<p class='note warning'>
Each named bit will create a switch.
</p>