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Update README.md

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Chris L.(Luo Sheng)
2017-03-29 20:49:59 +08:00
committed by GitHub
parent f099b9371e
commit 04c630d47f
1 changed files with 7 additions and 7 deletions
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Modbus.Net/Modbus.Net.Modbus/README.md
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@@ -10,11 +10,11 @@ Table of Content:
* [Addres Coding](#coding) * [Addres Coding](#coding)
* [SubAddress Rules](#subpos) * [SubAddress Rules](#subpos)
##<a name="basic"></a> Basic Concept ## <a name="basic"></a> Basic Concept
Modbus is a serial communications protocol originally published by Modicon (now Schneider Electric) in 1979 for use with its programmable logic controllers (PLCs). Simple and robust, it has since become a de facto standard communication protocol, and it is now a commonly available means of connecting industrial electronic devices.(From Wekipedia) Modbus is a serial communications protocol originally published by Modicon (now Schneider Electric) in 1979 for use with its programmable logic controllers (PLCs). Simple and robust, it has since become a de facto standard communication protocol, and it is now a commonly available means of connecting industrial electronic devices.(From Wekipedia)
##<a name="address"></a> Address Mapping ## <a name="address"></a> Address Mapping
Modbus has four types of address: Coil, Discrete Input, Input Register and Holding Register. Modbus has four types of address: Coil, Discrete Input, Input Register and Holding Register.
@@ -43,7 +43,7 @@ Standard Modbus Address | Modbus.Net.Modbus String Address |
30001 | 3X 1 | 30001 | 3X 1 |
40001 | 4X 1 | 40001 | 4X 1 |
##<a name="coding"></a> Address Coding ## <a name="coding"></a> Address Coding
In Modbus.Net, you can write "0X"(Coil), "1X"(Discrete Input), "3X"(Input Register), "4X"(Holding Register) in Area. In Modbus.Net, you can write "0X"(Coil), "1X"(Discrete Input), "3X"(Input Register), "4X"(Holding Register) in Area.
@@ -53,7 +53,7 @@ If you want to use subpos, type string address like this:
4X 1.12 (Area Address.Subpos) 4X 1.12 (Area Address.Subpos)
##<a name="subpos"></a> SubAddress Rules ## <a name="subpos"></a> SubAddress Rules
For 0X and 1X, the scalation is 1/8. This means each address is bool. For 0X and 1X, the scalation is 1/8. This means each address is bool.
@@ -71,10 +71,10 @@ Bit position from Modbus.Net is one less than standard modbus.
Standard Modbus Standard Modbus
1 0 1 1 1 0 0 0 1 0 0 0 0 1 1 0 1 0 1 1 1 0 0 0 1 0 0 0 0 1 1 0 <br>
16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
Modbus.Net.Modbus Modbus.Net.Modbus
1 0 1 1 1 0 0 0 1 0 0 0 0 1 1 0 1 0 1 1 1 0 0 0 1 0 0 0 0 1 1 0 <br>
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0