以下是使用C#实现Modbus RTU定时采集数据的完整代码示例，包含定时任务、数据采集和异常处理：
csharp
复制
using System;
using System.IO.Ports;
using System.Timers;public class ModbusRtuCollector : IDisposable
{private readonly SerialPort _serialPort;private readonly Timer _timer;private readonly object _portLock = new object();// 配置参数public string PortName { get; }public int BaudRate { get; }public int PollingInterval { get; set; } = 1000; // 默认1秒采集间隔public ModbusRtuCollector(string portName, int baudRate){PortName = portName;BaudRate = baudRate;// 初始化串口_serialPort = new SerialPort(portName, baudRate, Parity.None, 8, StopBits.One){ReadTimeout = 500,WriteTimeout = 500,Handshake = Handshake.RequestToSend // RTS控制收发};// 初始化定时器_timer = new Timer(PollingInterval);_timer.Elapsed += async (s, e) => await PollDataAsync();}public void Start(){if (!_serialPort.IsOpen){_serialPort.Open();_timer.Start();Console.WriteLine($"已启动数据采集，端口：{PortName}");}}public void Stop(){_timer.Stop();if (_serialPort.IsOpen) _serialPort.Close();Console.WriteLine("已停止数据采集");}private async Task PollDataAsync(){try{// 示例：读取设备地址1的保持寄存器40001-40004var result = await ReadHoldingRegistersAsync(0x01, 0x0000, 4);var timestamp = DateTime.Now.ToString("HH:mm:ss.fff");Con
