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58 lines
1.7 KiB
Markdown
58 lines
1.7 KiB
Markdown
# s7netplus
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#### A .NET Library for Siemens S7 Connectivity
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## Overview
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S7.Net Plus is a continuation of the work done on the [S7.Net](http://s7net.codeplex.com/) project by [Juergen1969](http://www.codeplex.com/site/users/view/juergen1969).
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I found the library simple and effective, but the project has languished unchanged since late 2009.
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I was doing some automation work already and saw a few places where the code base could be improved. Because Juergen did not respond
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to my request for committing code, I decided to pick up where he left off here on GitHub.
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## Requirements
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+ Compatible S7 PLC (S7-200, S7-300, S7-400, S7-1200)
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+ .NET Framework 3.5 or higher
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## Basic Usage
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```C#
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//Basic connection properties
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string deviceIpAddress = "172.25.116.87";
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int rackNumber = 0;
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int slotNumber = 2;
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//Connection to device
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using (var plc = new PLC(CPU_Type.S7300, deviceIpAddress, rackNumber, slotNumber))
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{
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//Ensure IP is responding
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if (plc.IsAvailable)
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{
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ErrorCode connectionResult = plc.Open();
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//Verify that connection was successful
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if (connectionResult.Equals(ErrorCode.NoError))
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{
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//Get data
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object data = plc.Read("MB59");
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Console.WriteLine("SUCCESS: Read result of MB59 is {0}", data);
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}
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else
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{
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Console.WriteLine("ERROR: Device is available but connection was unsuccessful!");
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}
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}
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else
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{
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Console.WriteLine("ERROR: Device is not available!");
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}
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}
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```
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## Running the tests
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Unit tests use Snap7 server, so port 102 must be not in use.
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If you have Siemens Step7 installed, the service s7oiehsx64 is stopped when running unit tests.
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You have to restart the service manually if you need it.
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