Add component collection

source/_components/modbus.markdown

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+---
+layout: page
+title: "Modbus"
+description: "Instructions how to integrate Modbus within Home Assistant."
+date: 2015-04-25 9:16
+sidebar: false
+comments: false
+sharing: true
+footer: true
+logo: modbus.png
+ha_category: Hub
+---
+
+<img src='/images/supported_brands/modbus.png' class='brand pull-right' />
+[Modbus](http://www.modbus.org/) is a serial communication protocol to control PLCs (Programmable logic controller). It currently supports sensors and switches which can be controlled over serial, TCP, and UDP connections.
+
+To add modbus to your installation, add the following to your `configuration.yaml` file:
+
+```yaml
+# Example configuration.yaml entry
+modbus:
+  type: serial
+  method: rtu
+  port: /dev/ttyUSB0
+  baudrate: 9600
+  stopbits: 1
+  bytesize: 8
+  parity: N
+
+sensor:
+  platform: modbus
+  slave: 1
+  registers:
+    16:
+      name: My integer sensor
+        unit: C
+    24:
+      bits:
+        0:
+          name: My boolean sensor
+        2:
+          name: My other boolean sensor
+    coils:
+        0:
+            name: My coil switch
+
+switch:
+  platform: modbus
+  slave: 1
+  registers:
+    24:
+      bits:
+        0:
+          name: My switch
+        2:
+          name: My other switch
+```