实例介绍
【实例简介】
【实例截图】
【核心代码】
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Net;
using System.Net.Sockets;
using System.Threading;
namespace PlcConn_Tcp
{
public partial class Test_PLC_Conn : Form
{
private TcpClient plc_Socket = null;
private NetworkStream myNetworkStream;
private byte client_node_no;
private byte server_node_no;
private int readCount = 3;//read address count from begin address
private int writeCount = 3;//write address count from begin address
//private PLCCommu plcCommu = PLCCommu.Instance;
public Test_PLC_Conn()
{
InitializeComponent();
}
private byte[] StringToBytes16(string source)
{
byte[] destination = new byte[source.Length/2];
for (int i = 0, j = 0; i < source.Length &&j<source.Length/2; i = 2,j )
{
string item = source.Substring(i, 2);
destination[j] = Convert.ToByte(item, 16);
}
return destination;
}
public bool creatConn(string Plc_IP, string Tcp_Port)
{
bool execResu = true;
//创建Socket连接
string tcp_header = "46494E530000000C000000000000000000000000";
byte[] fins_tcp_header = StringToBytes16(tcp_header);
try
{
plc_Socket = new TcpClient();
plc_Socket.Connect(IPAddress.Parse(Plc_IP), int.Parse(Tcp_Port));
myNetworkStream = plc_Socket.GetStream();
}
catch (SocketException ex)
{
MessageBox.Show(ex.Message);
execResu = false;
return execResu;
}
WriteData(fins_tcp_header);
byte[] responseMessage = ReadData();
//response Packet check
if (responseMessage.Length == 24)
{
if (responseMessage[8] != 0x00 || responseMessage[9] != 0x00 || responseMessage[10] != 0x00 || responseMessage[11] != 0x01
|| responseMessage[12] != 0x00 || responseMessage[13] != 0x00 || responseMessage[14] != 0x00 || responseMessage[15] != 0x00)
{
return false;
}
client_node_no = responseMessage[19];
server_node_no= responseMessage[23];
}
else
{
return false;
}
return execResu;
}
private bool Read(ref int[] data)
{
string Ssend_header = "46494E530000001A";
Ssend_header ="0000000200000000";
byte[] send_header = StringToBytes16(Ssend_header);
Random ra = new Random(unchecked((int)DateTime.Now.Ticks));
int SID = ra.Next(1, 100);//generate random sid in orde to check response packet
byte[] fins_header_comm = new byte[12];
fins_header_comm[0] = 0x80;//ICF
fins_header_comm[1] = 0x00;//RSV
fins_header_comm[2] = 0x02;//GCT
fins_header_comm[3] = 0x00; //DNA
fins_header_comm[4] = server_node_no;//PLC端节点号
fins_header_comm[5] = 0x00;//DA2
fins_header_comm[6] = 0x00;//SNA
fins_header_comm[7] = client_node_no;//PC端节点号,通过连接程序直接获得的
fins_header_comm[8] = 0x00;//SA2
fins_header_comm[9] = Convert.ToByte(SID.ToString(), 16);//SID
fins_header_comm[10] = 0x01;
fins_header_comm[11] = 0x01;//读命令
string saddr_value = "821C2000";
saddr_value = Convert.ToString(readCount, 16).PadLeft(4,'0');
byte[] addr_value = StringToBytes16(saddr_value);
WriteData(send_header);
WriteData(fins_header_comm);
WriteData(addr_value);
byte[] Reseponse = ReadData();
//MessageBox.Show(Reseponse.Length.ToString());
//check response packet
if (Reseponse[8] != 0 || Reseponse[9] != 0 || Reseponse[10] != 0 || Reseponse[11] != 2
|| Reseponse[12] != 0 || Reseponse[13] != 0 || Reseponse[14] != 0 || Reseponse[15] != 0
|| Reseponse[26] != 1 || Reseponse[27] != 1 || Reseponse[28] != 0 || Reseponse[29] != 0
|| Reseponse[25] != Convert.ToByte(SID.ToString(), 16))
{
return false;
}
MessageBox.Show((Convert.ToInt32(Reseponse[Reseponse.Length - 2].ToString("X2") Reseponse[Reseponse.Length - 1].ToString("X2"),16)).ToString());
object[] aaa=new object[2];
int a = 20;
long b = 60;
aaa[0] = a;
aaa[1] = b;
MessageBox.Show(aaa[0].GetType().ToString());
MessageBox.Show(aaa[1].GetType().ToString());
return true;
}
private bool Write(object[] data)
{
string Ssend_header = "46494E53000000";
Ssend_header = Convert.ToString((2*writeCount 1 25), 16).PadLeft(2, '0');
Ssend_header = "0000000200000000";
byte[] send_header=StringToBytes16(Ssend_header);
Random ra = new Random(unchecked((int)DateTime.Now.Ticks));
int SID = ra.Next(1, 100);//generate random sid in orde to check response packet
byte[] fins_header_comm=new byte[12];
fins_header_comm[0] = 0x80;//ICF4294967295
fins_header_comm[1] = 0x00;//RSV
fins_header_comm[2] = 0x02;//GCT
fins_header_comm[3] = 0x00; //DNA
fins_header_comm[4] = server_node_no;//PLC端节点号
fins_header_comm[5] = 0x00;//DA2
fins_header_comm[6] = 0x00;//SNA
fins_header_comm[7] = client_node_no;//PC端节点号,通过连接程序直接获得的
fins_header_comm[8] = 0x00;//SA2
fins_header_comm[9] = Convert.ToByte(SID.ToString(), 16);//SID
fins_header_comm[10] = 0x01;
fins_header_comm[11] = 0x02;//写命令
string saddr_value = "821C2000";
saddr_value = Convert.ToString(writeCount, 16).PadLeft(4, '0');
for (int i = 0; i < data.Length; i )
{
if ("System.Int64"==data[i].GetType().ToString())
{
saddr_value = Convert.ToString((long)data[i], 16).PadLeft(8, '0').Substring(4, 4);
saddr_value = Convert.ToString((long)data[i], 16).PadLeft(8, '0').Substring(0, 4);
}
else
{
saddr_value = Convert.ToString((int)data[i], 16).PadLeft(4, '0');
}
}
byte[] addr_value = StringToBytes16(saddr_value);
WriteData(send_header);
WriteData(fins_header_comm);
WriteData(addr_value);
byte[] Reseponse = ReadData();
//check response packet
if (Reseponse[8] != 0 || Reseponse[9] != 0 || Reseponse[10] != 0 || Reseponse[11] != 2
|| Reseponse[12] != 0 || Reseponse[13] != 0 || Reseponse[14] != 0 || Reseponse[15] != 0
|| Reseponse[26] != 1 || Reseponse[27] != 2 || Reseponse[28] != 0 || Reseponse[29] != 0
|| Reseponse[25] != Convert.ToByte(SID.ToString(), 16))
{
MessageBox.Show(Reseponse[8].ToString() Reseponse[9].ToString() Reseponse[10].ToString() Reseponse[11].ToString());
return false;
}
return true;
}
private void WriteData(byte[] myByte)
{
byte[] writeBytes = myByte;
myNetworkStream.Write(writeBytes, 0, writeBytes.Length);
myNetworkStream.Flush();
}
private byte[] ReadData()
{
int k = plc_Socket.Available;
while (k == 0)
{
k = plc_Socket.Available;
}
byte[] myBufferBytes = new byte[k];
myNetworkStream.Read(myBufferBytes, 0, k);
myNetworkStream.Flush();
return myBufferBytes;
}
private void button1_Click(object sender, EventArgs e)
{
if (creatConn(this.txt_PlcIP.Text.Trim(), this.txt_Tcpport.Text.Trim()))
{
MessageBox.Show("successfully!");
}
else
{
MessageBox.Show("Filed!");
}
}
private void button2_Click(object sender, EventArgs e)
{
long t = 4294967290;
int uu = 56;
object[] data = { t,uu };
if (Write(data))
{
MessageBox.Show("写入成功");
}
else
MessageBox.Show("写入失败");
}
private void button3_Click(object sender, EventArgs e)
{
int[] data=null;
if (Read(ref data))
{
MessageBox.Show("读取成功");
}
else
MessageBox.Show("读取失败");
}
}
}
好例子网口号：伸出你的我的手 — 分享！
网友评论
小贴士
感谢您为本站写下的评论，您的评论对其它用户来说具有重要的参考价值，所以请认真填写。
- 类似“顶”、“沙发”之类没有营养的文字，对勤劳贡献的楼主来说是令人沮丧的反馈信息。
- 相信您也不想看到一排文字/表情墙，所以请不要反馈意义不大的重复字符，也请尽量不要纯表情的回复。
- 提问之前请再仔细看一遍楼主的说明，或许是您遗漏了。
- 请勿到处挖坑绊人、招贴广告。既占空间让人厌烦，又没人会搭理，于人于己都无利。
关于好例子网
本站旨在为广大IT学习爱好者提供一个非营利性互相学习交流分享平台。本站所有资源都可以被免费获取学习研究。本站资源来自网友分享，对搜索内容的合法性不具有预见性、识别性、控制性，仅供学习研究，请务必在下载后24小时内给予删除，不得用于其他任何用途，否则后果自负。基于互联网的特殊性，平台无法对用户传输的作品、信息、内容的权属或合法性、安全性、合规性、真实性、科学性、完整权、有效性等进行实质审查；无论平台是否已进行审查，用户均应自行承担因其传输的作品、信息、内容而可能或已经产生的侵权或权属纠纷等法律责任。本站所有资源不代表本站的观点或立场，基于网友分享，根据中国法律《信息网络传播权保护条例》第二十二与二十三条之规定，若资源存在侵权或相关问题请联系本站客服人员，点此联系我们。关于更多版权及免责申明参见 版权及免责申明
支持(0) 盖楼(回复)
支持(0) 盖楼(回复)
支持(0) 盖楼(回复)
支持(0) 盖楼(回复)
支持(0) 盖楼(回复)
支持(0) 盖楼(回复)
支持(0) 盖楼(回复)