Modbus Protocol for .NET

Implements the Modbus communication protocol as .NET Standard library.

The first shot was made in 2018 - see on GitHub. This is the second try with a major UnitTest coverage and some community contributions right from the start.

Example

You can use the client without any deeper knowledge of the protocol itself.

string host = "modbus-device.local";
int port = 502;

using var client = new ModbusTcpClient(host, port);
await client.StartAsync(CancellationToken.None);

byte deviceId = 5;
ushort startAddress = 19000;
ushort count = 2;

var registers = await client.ReadHoldingRegistersAsync(deviceId, startAddress, count, CancellationToken.None);
float voltage = registers.GetSingle();

Console.WriteLine($"The voltage between L1 and N is: {voltage:N2}V");

For the people who already saw different devices: yes, it's a request to a Janitza device.

Documentation

The changelog is available here: CHANGELOG
A documentation can be found here: AM.WD Wiki

Sources

• Protocol Specification: v1.1b3
• Modbus Serial: v1.02
• Modbus TCP/IP: v1.0b

Contributors

hmarius, Luke092, maikebing, mishun

(ordered alphabetically ascending)

License

This library is released under the MIT License