连接PLC:

MelsecFxSerial Fx3U = new MelsecFxSerial();

private void button1_Click(object sender, EventArgs e)
{
    Fx3U.SerialPortInni(sp =>
    {
        sp.PortName = uiComboBox1.Text;
        sp.BaudRate = 9600;
        sp.DataBits = 7;
        sp.StopBits = System.IO.Ports.StopBits.One;
        sp.Parity = System.IO.Ports.Parity.Even;
        Fx3U.Open();
        MessageBox.Show("成功","连接设备", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
        button1.Enabled = false;
        button1.BackColor = System.Drawing.Color.White;
    });
    //输入继电器："X10", "X17"     字符串为八进制机制
    
    //内部继电器："M100", "M200"   字符串为十进制
    
    //数据寄存器："D100", "D200"   字符串为十进制
    //计数寄存器："C100" , "C200"  字符串为十进制
    //定时寄存器："T100" , "T200"  字符串为十进制
}

读取D100的数据：

private void uiButton1_Click(object sender, EventArgs e)
{
    ushort[] ushort_D100 = Fx3U.ReadUInt16("D100", 1).Content;  //读D1000的ushort值一个数值
    ushort value = ushort_D100[0];
    textBox1.Text = value.ToString();
}

写入D100的数据：

private void uiButton2_Click(object sender, EventArgs e)
{
    try
    {
        ushort valueToWrite = (ushort)short.Parse(textBox2.Text);
        Fx3U.Write("D100", valueToWrite);// 写入D1000  ushort值
    }
    catch
    {
        MessageBox.Show("请输入正确的数值");
    }
}

控制M100通断：

 private bool State = false; // 初始状态为关
 private void button5_Click(object sender, EventArgs e)
 {
     //如果需要判断是否读取成功
    OperateResult write1 = Fx3U.Write("M100", true);
     if (write1.IsSuccess)
     {
         State = !State; // 切换M100寄存器状态
         if (State)
         {
             button5.BackColor = Color.Green; // 开时显示绿色
         }
         else
         {
             button5.BackColor = Color.Red; // 关时显示红色
         }

         Fx3U.Write("M100", State); // 将新的状态写入M100寄存器
     }
     else
     {
         MessageBox.Show("打开失败");
     }           
 }

#头条文章养成计划##冬日生活打卡季#