From df0e39561614b5a391dc682afdf1e7e4450e3ba1 Mon Sep 17 00:00:00 2001
From: goldminenine <34691572+goldminenine@users.noreply.github.com>
Date: Fri, 29 Dec 2017 09:20:31 +0100
Subject: [PATCH] Update modbus.markdown (#4261)

Documentation change associated to pull request: https://github.com/home-assistant/home-assistant/pull/11238
---
 source/_components/modbus.markdown | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/source/_components/modbus.markdown b/source/_components/modbus.markdown
index f673298d82e..9d560058290 100644
--- a/source/_components/modbus.markdown
+++ b/source/_components/modbus.markdown
@@ -30,7 +30,10 @@ modbus:
 
 Configuration variables:
 
-- **type** (*Required*): Type of the connection to Modbus.
+- **type** (*Required*): Type of the connection to Modbus. Possible values are:
+  - *tcp*: Modbus TCP protocol according to "MODBUS Messaging Implementation Guide version 1.0b" provided by Schneider Automation, 
+  - *udp*: Modbus TCP form, but using UDP for transport (removes the overheads required for TCP),
+  - *rtuovertcp*: Modbus RTU message transmitted with a TCP/IP wrapper and sent over a network instead of serial lines.
 - **host** (*Required*): The IP address of your Modbus device, eg. 192.168.1.1.
 - **port** (*Required*): The port for the communication.
 - **timeout** (*Optional*): Timeout for slave response in seconds. (default: 3)
@@ -51,7 +54,7 @@ modbus:
 
 Configuration variables:
 
-- **type** (*Required*): Type of the connection to Modebus.
+- **type** (*Required*): Type of the connection to Modbus.
 - **method** (*Required*): Method of the connection to Modbus.
 - **port** (*Required*): The port where your Modbus device is connected to your Home Assistant host.
 - **baudrate** (*Required*): The speed for the serial connection.