查询代码如下:
片头:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO.Ports;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using 与变频器V90;
namespace 台达变
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
this.comboBox1.DataSource = SerialPort.GetPortNames();//获得端口
}
- ModbusRTU modbus = new ModbusRTU();
连接代码:
private void lianjie_Click(object sender, EventArgs e)
{
bool result = modbus.Open(this.comboBox1.Text);
if (result == false)
{
MessageBox.Show("串口连接失败", "建立连接");
}
else
{
modbus.prsSetSingleReg(1, 8193, Convert.ToInt16(Convert.ToSingle(this.knob_FreSet.Value) / 50.0f * 5000));
MessageBox.Show("串口连接成功", "建立连接");
}
- 正转代码:
private void buzhengzhuan_Click(object sender, EventArgs e)
{
if (!modbus.prsSetSingleReg(1, 8192, 0X22))
//if(!modbus.prsSetSingleReg(1, 99, 0x047F))
{
MessageBox.Show("正转失败");//这样就可以有返回值了
}
- 反转代码明细:
private void fanzhuan_Click(object sender, EventArgs e)
{
if (!modbus.prsSetSingleReg(1, 8192, 0x012))
{
MessageBox.Show("反转失败");
}
- 停止代码详细:
private void buSTOP_Click(object sender, EventArgs e)
{
//if(!modbus.prsSetSingleReg(1, 99, 0x047E)) //站号 寄存器地址 写入数据
if (!modbus.prsSetSingleReg(1, 8192, 0x01))
{
MessageBox.Show("停止失败");//这样就可以有返回值了
}
- 频率设置:
private void knob_FreSet_ValueChanged(object Sender)
{
//if (!modbus.prsSetSingleReg(1, 8193, Convert.ToInt16(Convert.ToSingle(this.knob_FreSet.Value) / 50.0f * 16384)))
if (!modbus.prsSetSingleReg(1, 8193, Convert.ToInt16(Convert.ToSingle(this.knob_FreSet.Value) / 50.0f *5000)))
{
MessageBox.Show("频率设置失败");
}
- 最后是要写一个类:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO.Ports;
using System.Threading;
namespace 与变频器V90
{
public class ModbusRTU
{
//创建对象
private SerialPort serialport = null;
//public 是可以给别人用的
public bool Open(string PortName)
{
//串口设置
serialport = new SerialPort(PortName, 9600, Parity.Even, 8, StopBits.One);
try
{
serialport.Open();
}
catch(Exception )
{
return false;
}
return true;
}
public void close()
{
if(serialport != null)
{
if (serialport.IsOpen)
{
serialport.Close();
}
}
}
public bool prsSetSingleReg(byte slaveld,short address,short value)
{
//发送报文 往40100这个地址写0X047E
List<byte> Sendcommand = new List<byte>();
Sendcommand.Add(slaveld);//站地址
Sendcommand.Add(0x06);//功能码
Sendcommand.Add((byte)(address / 256));//寄存器地址(0x00)
Sendcommand.Add((byte)(address % 256));//寄存器地址(0x63)实是99
Sendcommand.Add((byte)(value / 256));//写入数据(0x04)
Sendcommand.Add((byte)(value % 256));//(0x7F)
//CRC校验 的返回值
byte[] crc = CalculateCRC(Sendcommand.ToArray(), Sendcommand.Count);
Sendcommand.AddRange(crc);
serialport.Write(Sendcommand.ToArray(), 0, Sendcommand.Count);
//让正转哪些有反回数据
Thread.Sleep(50);
int count = serialport.BytesToRead;
byte[] response = new byte[count];
serialport.Read(response, 0, response.Length);
//让正反转有返回值作对比
return Encoding.ASCII.GetString(Sendcommand.ToArray()) == Encoding.ASCII.GetString(response);
private static readonly byte[] aucCRCHi = {
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40
};
private static readonly byte[] aucCRCLo = {
0x00, 0xC0, 0xC1, 0x01, 0xC3, 0x03, 0x02, 0xC2, 0xC6, 0x06, 0x07, 0xC7,
0x05, 0xC5, 0xC4, 0x04, 0xCC, 0x0C, 0x0D, 0xCD, 0x0F, 0xCF, 0xCE, 0x0E,
0x0A, 0xCA, 0xCB, 0x0B, 0xC9, 0x09, 0x08, 0xC8, 0xD8, 0x18, 0x19, 0xD9,
0x1B, 0xDB, 0xDA, 0x1A, 0x1E, 0xDE, 0xDF, 0x1F, 0xDD, 0x1D, 0x1C, 0xDC,
0x14, 0xD4, 0xD5, 0x15, 0xD7, 0x17, 0x16, 0xD6, 0xD2, 0x12, 0x13, 0xD3,
0x11, 0xD1, 0xD0, 0x10, 0xF0, 0x30, 0x31, 0xF1, 0x33, 0xF3, 0xF2, 0x32,
0x36, 0xF6, 0xF7, 0x37, 0xF5, 0x35, 0x34, 0xF4, 0x3C, 0xFC, 0xFD, 0x3D,
0xFF, 0x3F, 0x3E, 0xFE, 0xFA, 0x3A, 0x3B, 0xFB, 0x39, 0xF9, 0xF8, 0x38,
0x28, 0xE8, 0xE9, 0x29, 0xEB, 0x2B, 0x2A, 0xEA, 0xEE, 0x2E, 0x2F, 0xEF,
0x2D, 0xED, 0xEC, 0x2C, 0xE4, 0x24, 0x25, 0xE5, 0x27, 0xE7, 0xE6, 0x26,
0x22, 0xE2, 0xE3, 0x23, 0xE1, 0x21, 0x20, 0xE0, 0xA0, 0x60, 0x61, 0xA1,
0x63, 0xA3, 0xA2, 0x62, 0x66, 0xA6, 0xA7, 0x67, 0xA5, 0x65, 0x64, 0xA4,
0x6C, 0xAC, 0xAD, 0x6D, 0xAF, 0x6F, 0x6E, 0xAE, 0xAA, 0x6A, 0x6B, 0xAB,
0x69, 0xA9, 0xA8, 0x68, 0x78, 0xB8, 0xB9, 0x79, 0xBB, 0x7B, 0x7A, 0xBA,
0xBE, 0x7E, 0x7F, 0xBF, 0x7D, 0xBD, 0xBC, 0x7C, 0xB4, 0x74, 0x75, 0xB5,
0x77, 0xB7, 0xB6, 0x76, 0x72, 0xB2, 0xB3, 0x73, 0xB1, 0x71, 0x70, 0xB0,
0x50, 0x90, 0x91, 0x51, 0x93, 0x53, 0x52, 0x92, 0x96, 0x56, 0x57, 0x97,
0x55, 0x95, 0x94, 0x54, 0x9C, 0x5C, 0x5D, 0x9D, 0x5F, 0x9F, 0x9E, 0x5E,
0x5A, 0x9A, 0x9B, 0x5B, 0x99, 0x59, 0x58, 0x98, 0x88, 0x48, 0x49, 0x89,
0x4B, 0x8B, 0x8A, 0x4A, 0x4E, 0x8E, 0x8F, 0x4F, 0x8D, 0x4D, 0x4C, 0x8C,
0x44, 0x84, 0x85, 0x45, 0x87, 0x47, 0x46, 0x86, 0x82, 0x42, 0x43, 0x83,
0x41, 0x81, 0x80, 0x40
};
/// <summary>
/// CRC校验
/// </summary>
/// <param name="pucFrame">字节数组</param>
/// <param name="usLen">验证长度</param>
/// <returns>2个字节</returns>
public static byte[] CalculateCRC(byte[] pucFrame, int usLen)
{
int i = 0;
byte[] res = new byte[2] { 0xFF, 0xFF };
ushort iIndex;
while (usLen-- > 0)
{
iIndex = (ushort)(res[0] ^ pucFrame[i ]);
res[0] = (byte)(res[1] ^ aucCRCHi[iIndex]);
res[1] = aucCRCLo[iIndex];
}
return res;
- 以上是写一个类的全部内容。
感谢观看