c#中modubus tcp如何读写数据

 

话不多说,直接上代码,上代码之前前提是你的modubus实体机器能和电脑连通,至于如何连接,自行百度,一搜一大把,我这里就不做过多解释了,目前我用的软件是Modubus Slave

连接成功是这样的:

首先创建连接:

ModbusTcpNet busTcpClient = new ModbusTcpNet("192.168.3.1", 5005, 0x01);

这里我用的方式是长连接方式,打开长连接:

busTcpClient.ConnectServer();

下面是我抓取数据的点击事件里面所写的代码:

private void Btn_receivedata_Click(object sender, EventArgs e)
        {
            ModbusTcpNet busTcpClient = new ModbusTcpNet("192.168.3.1", 5005, 0x01);
            //ModbusTcpNet busTcpClient = new ModbusTcpNet("127.0.0.1", 502, 0x01);//127.0.0.1是从站也就是服务端的ip地址,502是服务端的端口号,0*01是功能码
            busTcpClient.ConnectServer();//开启长连接
                                         //busTcpClient.AddressStartWithZero = false;//设备地址从1开始,必写
                                         // 读取操作
                                         //; busTcpClient.ReadBool("0", 10)
            //HslCommunication.OperateResult<byte[]> read =new HslCommunication.OperateResult<byte[]>( BitConverter.GetBytes(Convert.ToBoolean(busTcpClient.ReadBool("0", 10))).ToString());//主站访问方式
            HslCommunication.OperateResult<byte[]> read = busTcpClient.Read("0", 10);
            if (read.IsSuccess)
            {
                // 共返回20个字节,每个数据2个字节,高位在前,低位在后:
                string s ="";
                bool t;
                // 前两个字节是short数据类型
                for (int i = 0; i < read.Content.Length; i++)
                {
                    t = busTcpClient.ByteTransform.TransBool(read.Content, i);
                    if (i % 2 != 0)
                    {
                        s += " " + Convert.ToInt32(t) + " ";
                    }
                }

                textBox4.Text = s;
                // 已经提取完所有的数据
            }

            else

            {
                //弹出报错信息
                MessageBox.Show(read.ToMessageShowString());

            }


        }

下面是向你的modbus从站服务器中发送数据的点击事件代码:

ModbusTcpNet busTcpClient = new ModbusTcpNet("127.0.0.1", 502, 0x01);//127.0.0.1是从站也就是服务端的ip地址,502是服务端的端口号,0*0F是功能码
            busTcpClient.ConnectServer();//开启长连接
            //busTcpClient.AddressStartWithZero = false;//设备地址从1开始,必写
            //bool[] nnn = new bool[] {true,false, true, false, true, false, true, false, true, false };
            //short[] value = new short[] { };//1,1,1,0,1,0,0,0,0,1
            if (textBox4.Text == "")
            {
               
                MessageBox.Show("请输入您要发送的数据");
            }
            else
            {
                HslCommunication.OperateResult write = busTcpClient.Write("0", textBox4.Text.ToString());
                if (write.IsSuccess)
                {
                    // 写入成功
                    textBox4.Text = "写入成功";
                }
                else
                {
                    MessageBox.Show(write.ToMessageShowString());
                }
            }

注释我自认为写的已经很详细,希望能够帮助到大家,不会的可以直接问

我设计的界面是这样的:

 

posted @ 2021-01-27 16:38  rookiexwang  阅读(922)  评论(0编辑  收藏  举报