Modbus Digital Twin

using ULTRAMEGA.Modbus.DTS;

// Create TCP device on port 502
var device = ModbusDeviceFactory.CreateTcpDevice(
    deviceId: 1,
    port: 502
);

// Set initial values
device.SetHoldingRegister(0, 1234);
device.SetCoil(0, true);

// Start the device
await device.StartAsync();

// Device now responds to Modbus TCP requests
Console.WriteLine("Device running on port 502");
Console.ReadKey();
await device.StopAsync();

// Create RTU device with serial settings
var device = new ModbusRtuDevice(
    deviceId: 2,
    portName: "COM3",
    baudRate: 9600,
    parity: Parity.None,
    dataBits: 8,
    stopBits: StopBits.One
);

// Configure timeouts
device.ResponseTimeout = TimeSpan.FromMilliseconds(500);

// Start the device
await device.StartAsync();

public class TemperatureSimulator : ModbusTcpDevice
{
    private Random random = new Random();

    public override void SimulateData()
    {
        // Simulate 10 temperature sensors
        for (int i = 0; i < 10; i++)
        {
            float temp = 20 + (float)(random.NextDouble() * 15);
            SetHoldingRegister(i, (ushort)(temp * 10));

            // Set alarm if temperature exceeds threshold
            SetCoil(i + 100, temp > 30);
        }

        base.SimulateData();
    }
}