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Overview

Modbus.Net is an open hardware communication platform written by C# 7.0.

Jan 16, 2011 hi, I am using S7-200(cpu-226) for the modbus communication with PC(visual basic).but i dont know how to communicate that PC with PLC using modbus.From forum i got the sample program for send and receive data to and from pc. I uploaded that program plz ch. SIMATIC S7-1200. S7-1200 - low cost, small, powerful PLC. Modbus project for the S7-2000 includes: Modbus RTU Slave; Modbus RTU Master; Modbus TCP/IP Server; Modbus TCP/IP Client Download Modbus Step7 V11.SP1 project.

You can only focusing on the protocal itself, and the platform can automaticaly create a full asynchronized or synchronized communication library.

Why called Modbus.Net

Modbus.Net was opened two years ago when I graduated. The first target of this project is to implement a remote PLC communication with Modbus TCP. But things were going changed after half a year. When the company decide to use a IoT hardware, a universary architech should be required. Then the main platform changed to a universal communication platform. But the name 'Modbus.Net' holded back.

The real Modbus Implementation has been moved to Modbus.Net.Modbus. If you want a real Modbus C# implementation, please download 'Modbus.Net' and 'Modbus.Net.Modbus' at the same time.

There are also 'Modbus.Net.Siemens' that can communicate to Siemens S7-200, S7-200 Smart, S7-300, S7-400, S7-1200, S7-1500 using PPI or TCP/IP.

'Modbus.Net.OPC' Implements OPC DA and OPC UA protocal.

Platform Supported

• Visual Studio 2017
• .NET Framework 4.5
• .NET Standard 2.0

Thanks

Resharper -- Offers Modbus.Net team community lisence.

RoadMap

Version 1.2.0

• Modbus ASCII Support (Complete)
• Siemens PPI Support (Complete)
• OPC Write Data (Complete)
• Get and set bit value (Complete)
• Unit test (Complete)
• New Document (Complete)
• New Samples (Complete)

Version 1.2.2

• Address Utility (Complete)
• More functions in TaskManager (Complete)
• More interfaces (Complete)

Version 1.2.3

• Endian Problem Fix (Complete)
• Name mode in TaskManager (Complete)

Version 1.2.4

• OPC UA Support (Complete)
• OPC Regex comparer for tags (Complete)

Version 1.3.0

• .NET Core Support (Complete)
• Fix a bug in BaseMachine (Complete)

Version 1.3.1

• InputStruct -> IInputStruct, OutputStruct -> IOutputStruct (Complete)
• Generic Method For ProtocalUnit (Complete)

Version 1.3.2

• Add Interface IMachineMethod and IUtilityMethod. Utiltiy and Machine can extend function using interface (Complete)

Version 1.3.3

• TaskManager Remake (Complete)

Version 1.3.4

• A Serial Port now can connect to multiple machines using same protocol with different slave address (Complete)

Version 1.3.5

• New log system using serilog (Complete)

Version 1.3.6

• Add gereric Type for BaseConnector, now protocol developer can pass any type to BaseConnector not only byte[] (Complete)
• Add more gereric types in Modbus.Net to support this function (Complete)
• Add more interfaces to make them completed in Modbus.Net (Complete)
• Support this function in Modbus.Net.OPC (Complete)

Version 1.3.7

• AddressCombiner need to add maximum length now. Combiner will consider the maximum length when combining addresses (Complete)

Version 1.3.8

• Change Resx to appsettings.json, now you can set default params there (Complete - CORE ONLY)
• Change ISpecialProtocalUnit to SpecialProtocalUnitAttribute (Complete)

Version 1.3.9

• Modbus Single Write for Coil and Reg (05 and 06) (Complete)
• Fix OPC tag combine problem (Complete)

1.3.X Other

• Github wiki Document Chinese (Complete)
• Github wiki Document English (Complete)

Version 1.3.10

• Update to .Net Standard 2.0 (Complete)

Download Modbus Poll

Version 1.4.0

• New Protocal Pipeline System (Coding)

Version 1.4.1

• BaseController (In Road)
• New ComConnector (In Road)
• New TcpConnector (In Road)
• New UdpConnector (In Road)
• Serial Port Connection with Multiple Master Station (In Road)

Version 1.4.2

• PPI Remake (In Road)
• Siemens MPI Support (In Road)
• Siemens MultiStation PPI Support (In Road)

Version 1.5.X

• Unite TransServer.Net into Modbus.Net (In Road)
• Passive Connector and Controller (In Road)
• Architechture rebuild (In Road)

Version 1.6.X

• English comment (In Road)
• ValueHelper remake to interface, users can add their own value translate function (In Road)
• New Zoom (In Road)

Version 2.0.0

• Rename to Transport.Net (In Road)
• Puzzle System (In Road)
• Machine Builder (In Road)

Modbus Software Download