// NuGet安裝依賴
Install-Package HslCommunication
Install-Package HslCommunication.Profinet.Omron

using HslCommunication;
using HslCommunication.Profinet.Omron;

public class OmronPLCController
{
    private OmronFinsNet _plcClient;
    
    public OmronPLCController(string ipAddress, int port = 9600)
    {
        _plcClient = new OmronFinsNet(ipAddress, port);
    }

    // 建立連接
    public bool Connect()
    {
        var result = _plcClient.ConnectServer();
        return result.IsSuccess;
    }

    // 讀取D區(qū)數(shù)據(jù)
    public ushort[] ReadDRegisters(string startAddress, int count)
    {
        var result = _plcClient.ReadUInt16(startAddress, count);
        return result.IsSuccess ? result.Content : null;
    }

    // 寫(xiě)入D區(qū)數(shù)據(jù)
    public bool WriteDRegisters(string startAddress, ushort[] values)
    {
        var result = _plcClient.Write(startAddress, values);
        return result.IsSuccess;
    }

    // 斷開(kāi)連接
    public void Disconnect()
    {
        _plcClient.ConnectClose();
    }
}

var plc = new OmronPLCController("192.168.1.100");
if(plc.Connect())
{
    // 讀取D100-D105共6個(gè)字
    ushort[] data = plc.ReadDRegisters("D100", 6);
    
    // 寫(xiě)入D200-D201
    ushort[] writeData = { 1234, 5678 };
    plc.WriteDRegisters("D200", writeData);
}

Install-Package NModbus4

using Modbus.Device;
using System.Net.Sockets;

public class OmronPLCModbus
{
    private TcpClient _client;
    private IModbusMaster _master;

    public void Connect(string ip, int port = 502)
    {
        _client = new TcpClient(ip, port);
        _master = _client.GetModbusMaster();
        _master.Transport.Open();
    }

    // 讀取保持寄存器
    public ushort[] ReadHoldingRegisters(ushort address, ushort count)
    {
        return _master.ReadHoldingRegisters(1, address, count);
    }

    // 寫(xiě)入單個(gè)寄存器
    public void WriteSingleRegister(ushort address, ushort value)
    {
        _master.WriteSingleRegister(1, address, value);
    }
}

try
{
    var result = _plcClient.Read("D100", 1);
    if(!result.IsSuccess)
    {
        Log.Error($"讀取失敗: {result.Message}");
        Reconnect();
    }
}
catch(SocketException ex)
{
    HandleNetworkError(ex);
}

// 實(shí)時(shí)數(shù)據(jù)更新
private void Timer_Tick(object sender, EventArgs e)
{
    var temp = plc.ReadFloat("D100").Content;
    chart.Series[0].Points.AddY(temp);
}

// 溫度超限報(bào)警
if(plc.ReadFloat("D100").Content > 85.0f)
{
    SendAlert("溫度過(guò)高！", "PLC001");
}