实例介绍
【实例简介】
C#winform与西门子1200、1500系列PLC通讯实例
【实例截图】
【核心代码】
using System;
using System.Runtime.InteropServices;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using Sharp7;
namespace CSClient
{
public partial class MainForm : Form
{
private S7Client Client;
private byte[] Buffer = new byte[65536];
private byte[] DB_A = new byte[1024];
private byte[] DB_B = new byte[1024];
private byte[] DB_C = new byte[1024];
private void ShowResult(int Result) //状态栏结果显示
{
// This function returns a textual explaination of the error code
TextError.Text = Client.ErrorText(Result);
if (Result == 0)
TextError.Text = TextError.Text " (" Client.ExecutionTime.ToString() " ms)";
}
public MainForm()
{
InitializeComponent();
Client = new S7Client();
if (IntPtr.Size == 4)
this.Text = this.Text " - Running 32 bit Code";
else
this.Text = this.Text " - Running 64 bit Code";
CBType.SelectedIndex = 0;
CBArea.SelectedIndex = 3;
CBWLen.SelectedIndex = 1;
CBBlock.SelectedIndex = 1;
tabControl.Enabled = false;
}
private void ConnectBtn_Click(object sender, EventArgs e) //连接PLC
{
int Result = 1;
int Rack = System.Convert.ToInt32(TxtRack.Text);
int Slot = System.Convert.ToInt32(TxtSlot.Text);
Result = Client.ConnectTo(TxtIP.Text, Rack, Slot);
ShowResult(Result); //状态栏结果显示
if (Result == 0)
{
TextError.Text = TextError.Text " PDU Negotiated : " Client.PduSizeNegotiated.ToString(); //状态栏结果追加文本
TxtIP.Enabled = false;
TxtRack.Enabled = false;
TxtSlot.Enabled = false;
ConnectBtn.Enabled = false;
DisconnectBtn.Enabled = true;
tabControl.Enabled = true;
}
else MessageBox.Show("连接PLC失败");
}
private void DisconnectBtn_Click(object sender, EventArgs e) //断开PLC连接
{
Client.Disconnect();
TextError.Text = "Disconnected";
TxtIP.Enabled = true;
TxtRack.Enabled = true;
TxtSlot.Enabled = true;
ConnectBtn.Enabled = true;
DisconnectBtn.Enabled = false;
tabControl.Enabled = false;
}
private void ReadBtn_Click(object sender, EventArgs e) //读Area
{
ReadArea();
}
private void button2_Click_1(object sender, EventArgs e) //Set
{
int Result = Client.WriteArea(S7Consts.S7AreaCT, 0, 1, 3, S7Consts.S7WLCounter, Buffer);
ShowResult(Result); //状态栏结果显示
}
private void FieldBtn_Click(object sender, EventArgs e) //Field Get
{
/*
0 Byte 8 Bit Word (All)
1 Word 16 Bit Word (All)
2 DWord 32 Bit Word (All)
3 LWord 64 Bit Word (S71500)
4 USint 8 Bit Unsigned Integer (S71200/1500)
5 UInt 16 Bit Unsigned Integer (S71200/1500)
6 UDInt 32 Bit Unsigned Integer (S71200/1500)
7 ULint 64 Bit Unsigned Integer (S71500)
8 Sint 8 Bit Signed Integer (S71200/1500)
9 Int 16 Bit Signed Integer (All)
10 DInt 32 Bit Signed Integer (S71200/1500)
11 LInt 64 Bit Signed Integer (S71500)
12 Real 32 Bit Floating point (All)
13 LReal 64 Bit Floating point (S71200/1500)
14 Time 32 Bit Time elapsed ms (All)
15 LTime 64 Bit Time Elapsed ns (S71500)
16 Date 16 Bit days from 1990/1/1 (All)
17 TOD 32 Bit ms elapsed from midnight (All)
18 DT 8 Byte Date and Time (All)
19 LTOD 64 Bit time of day (ns) (S71500)
20 DTL 12 Byte Date and Time Long (S71200/1500)
21 LDT 64 Bit ns elapsed from 1970/1/1 (S71500)
*/
int Pos = System.Convert.ToInt32(TxtOffset.Text);
switch (CBType.SelectedIndex)
{
case 0:
{
TxtValue.Text = "16#" System.Convert.ToString(Buffer[Pos], 16).ToUpper();
break;
}
case 1:
{
UInt16 Word = S7.GetWordAt(Buffer, Pos);
TxtValue.Text = "16#" System.Convert.ToString(Word, 16).ToUpper();
break;
}
case 2:
{
UInt32 DWord = S7.GetDWordAt(Buffer, Pos);
TxtValue.Text = "16#" System.Convert.ToString(DWord, 16).ToUpper();
break;
}
case 3:
{
UInt64 LWord = S7.GetLWordAt(Buffer, Pos);
TxtValue.Text = "16#" System.Convert.ToString((Int64)LWord, 16).ToUpper(); // <-- Convert.ToString does not handle UInt64
break;
}
case 4:
{
UInt16 USInt = S7.GetUSIntAt(Buffer, Pos);
TxtValue.Text = System.Convert.ToString(USInt);
break;
}
case 5:
{
UInt16 UInt = S7.GetUIntAt(Buffer, Pos);
TxtValue.Text = System.Convert.ToString(UInt);
break;
}
case 6:
{
UInt32 UDInt = S7.GetDWordAt(Buffer, Pos);
TxtValue.Text = System.Convert.ToString(UDInt);
break;
}
case 7:
{
UInt64 ULInt = S7.GetLWordAt(Buffer, Pos);
TxtValue.Text = System.Convert.ToString(ULInt);
break;
}
case 8:
{
int SInt = S7.GetSIntAt(Buffer, Pos);
TxtValue.Text = System.Convert.ToString(SInt);
break;
}
case 9:
{
int S7Int = S7.GetIntAt(Buffer, Pos);
TxtValue.Text = System.Convert.ToString(S7Int);
break;
}
case 10:
{
int DInt = S7.GetDIntAt(Buffer, Pos);
TxtValue.Text = System.Convert.ToString(DInt);
break;
}
case 11:
{
Int64 LInt = S7.GetLIntAt(Buffer, Pos);
TxtValue.Text = System.Convert.ToString(LInt);
break;
}
case 12:
{
Single S7Real = S7.GetRealAt(Buffer, Pos);
TxtValue.Text = System.Convert.ToString(S7Real);
break;
}
case 13:
{
Double S7LReal = S7.GetLRealAt(Buffer, Pos);
TxtValue.Text = System.Convert.ToString(S7LReal);
break;
}
case 14:
{
Int32 TimeElapsed = S7.GetDIntAt(Buffer, Pos);
// TIME type is a 32 signed number of ms elapsed
// Can be added to a DateTime or used as Value.
TxtValue.Text = "T#" System.Convert.ToString(TimeElapsed) "MS";
break;
}
case 15:
{
Int64 TimeElapsed = S7.GetLIntAt(Buffer, Pos);
// LTIME type is a 64 signed number of ns elapsed
// Can be added (after a conversion) to a DateTime or used as Value.
TxtValue.Text = "LT#" System.Convert.ToString(TimeElapsed) "NS";
break;
}
case 16:
{
DateTime DATE = S7.GetDateAt(Buffer, Pos);
TxtValue.Text = DATE.ToString("D#yyyy-MM-dd");
break;
}
case 17:
{
DateTime TOD = S7.GetTODAt(Buffer, Pos);
TxtValue.Text = TOD.ToString("TOD#HH:mm:ss.fff");
break;
}
case 18:
{
DateTime DT = S7.GetDateTimeAt(Buffer, Pos);
TxtValue.Text = DT.ToString("DT#yyyy-MM-dd-HH:mm:ss.fff");
break;
}
case 19:
{
DateTime LTOD = S7.GetLTODAt(Buffer, Pos);
TxtValue.Text = LTOD.ToString("LTOD#HH:mm:ss.fffffff");
break;
}
case 20:
{
DateTime DTL = S7.GetDTLAt(Buffer, Pos);
TxtValue.Text = DTL.ToString("DTL#yyyy-MM-dd-HH:mm:ss.fffffff");
break;
}
case 21:
{
DateTime LDT = S7.GetLDTAt(Buffer, Pos);
TxtValue.Text = LDT.ToString("LDT#yyyy-MM-dd-HH:mm:ss.fffffff");
break;
}
}
}
private void HexDump(TextBox DumpBox, byte[] bytes, int Size)
{
if (bytes == null)
return;
int bytesLength = Size;
int bytesPerLine = 16;
char[] HexChars = "0123456789ABCDEF".ToCharArray();
int firstHexColumn =
8 // 8 characters for the address
3; // 3 spaces
int firstCharColumn = firstHexColumn
bytesPerLine * 3 // - 2 digit for the hexadecimal value and 1 space
(bytesPerLine - 1) / 8 // - 1 extra space every 8 characters from the 9th
2; // 2 spaces
int lineLength = firstCharColumn
bytesPerLine // - characters to show the ascii value
Environment.NewLine.Length; // Carriage return and line feed (should normally be 2)
char[] line = (new String(' ', lineLength - 2) Environment.NewLine).ToCharArray();
int expectedLines = (bytesLength bytesPerLine - 1) / bytesPerLine;
StringBuilder result = new StringBuilder(expectedLines * lineLength);
for (int i = 0; i < bytesLength; i = bytesPerLine)
{
line[0] = HexChars[(i >> 28) & 0xF];
line[1] = HexChars[(i >> 24) & 0xF];
line[2] = HexChars[(i >> 20) & 0xF];
line[3] = HexChars[(i >> 16) & 0xF];
line[4] = HexChars[(i >> 12) & 0xF];
line[5] = HexChars[(i >> 8) & 0xF];
line[6] = HexChars[(i >> 4) & 0xF];
line[7] = HexChars[(i >> 0) & 0xF];
int hexColumn = firstHexColumn;
int charColumn = firstCharColumn;
for (int j = 0; j < bytesPerLine; j )
{
if (j > 0 && (j & 7) == 0) hexColumn ;
if (i j >= bytesLength)
{
line[hexColumn] = ' ';
line[hexColumn 1] = ' ';
line[charColumn] = ' ';
}
else
{
byte b = bytes[i j];
line[hexColumn] = HexChars[(b >> 4) & 0xF];
line[hexColumn 1] = HexChars[b & 0xF];
line[charColumn] = (b < 32 ? '·' : (char)b);
}
hexColumn = 3;
charColumn ;
}
result.Append(line);
}
DumpBox.Text=result.ToString();
}
private void ReadArea()
{
// Declaration separated from the code for readability
int DBNumber;
int Amount;
int SizeRead = 0;
int Result;
int[] Area =
{
S7Consts.S7AreaPE,
S7Consts.S7AreaPA,
S7Consts.S7AreaMK,
S7Consts.S7AreaDB,
S7Consts.S7AreaCT,
S7Consts.S7AreaTM
};
int[] WordLen =
{
S7Consts.S7WLBit,
S7Consts.S7WLByte,
S7Consts.S7WLChar,
S7Consts.S7WLWord,
S7Consts.S7WLInt,
S7Consts.S7WLDWord,
S7Consts.S7WLDInt,
S7Consts.S7WLReal,
S7Consts.S7WLCounter,
S7Consts.S7WLTimer
};
label18.Text = "0";
TxtDump.Text = "";
DBNumber = System.Convert.ToInt32(TxtDB.Text);
Amount = System.Convert.ToInt32(TxtSize.Text);
Result = Client.ReadArea(Area[CBArea.SelectedIndex], DBNumber, 0, Amount, WordLen[CBWLen.SelectedIndex], Buffer, ref SizeRead);
StringBuilder sb = new StringBuilder();
for (int i = 0; i < Buffer.Length; i )
{
sb.Append((int)Buffer[i] ",");
}
System.IO.File.WriteAllText(Application.StartupPath "\\error.txt", sb.ToString(), Encoding.UTF8);
ShowResult(Result); //状态栏结果显示
label18.Text = SizeRead.ToString();
if (Result == 0)
HexDump(TxtDump, Buffer, SizeRead);
}
public void DBMultiRead()
{
// Multi Reader Instance
S7MultiVar Reader = new S7MultiVar(Client);
TxtRes_A.Text = "";
TxtRes_B.Text = "";
TxtRes_C.Text = "";
int DBNumber_A = System.Convert.ToInt32(TxtDB_A.Text);
int DBNumber_B = System.Convert.ToInt32(TxtDB_B.Text);
int DBNumber_C = System.Convert.ToInt32(TxtDB_C.Text);
// Add Items def.
Reader.Add(S7Consts.S7AreaDB, S7Consts.S7WLByte, DBNumber_A, 0, 16, ref DB_A);
Reader.Add(S7Consts.S7AreaDB, S7Consts.S7WLByte, DBNumber_B, 0, 16, ref DB_B);
Reader.Add(S7Consts.S7AreaDB, S7Consts.S7WLByte, DBNumber_C, 0, 16, ref DB_C);
// Performs the Read
int Result = Reader.Read();
// Dumps the data and shows the results
ShowResult(Result);
TxtRes_A.Text = Client.ErrorText(Reader.Results[0]);
if (Reader.Results[0] == 0)
HexDump(TxtDump_A, DB_A, 16);
else
TxtDump_A.Text = "< No Data Available >";
TxtRes_B.Text = Client.ErrorText(Reader.Results[1]);
if (Reader.Results[1] == 0)
HexDump(TxtDump_B, DB_B, 16);
else
TxtDump_B.Text = "< No Data Available >";
TxtRes_C.Text = Client.ErrorText(Reader.Results[2]);
if (Reader.Results[2] == 0)
HexDump(TxtDump_C, DB_C, 16);
else
TxtDump_C.Text = "< No Data Available >";
}
void DBMultiWrite()
{
for (int c = 0; c < 16; c )
{
DB_A[c] = 0x01;
}
for (int c = 0; c < 16; c )
{
DB_B[c] = 0x02;
}
// Multi Writer Instance
S7MultiVar Writer = new S7MultiVar(Client);
TxtRes_A.Text = "";
TxtRes_B.Text = "";
TxtRes_C.Text = "";
TxtDump_A.Text = "";
TxtDump_B.Text = "";
TxtDump_C.Text = "";
int DBNumber_A = Convert.ToInt32(TxtDB_A.Text);
int DBNumber_B = Convert.ToInt32(TxtDB_B.Text);
int DBNumber_C = Convert.ToInt32(TxtDB_C.Text);
// Add Items def.
Writer.Add(S7Consts.S7AreaDB, S7Consts.S7WLByte, DBNumber_A, 0, 16, ref DB_A);
Writer.Add(S7Consts.S7AreaDB, S7Consts.S7WLByte, DBNumber_B, 0, 16, ref DB_B);
Writer.Add(S7Consts.S7AreaDB, S7Consts.S7WLByte, DBNumber_C, 0, 16, ref DB_C);
// Performs the Write
int Result = Writer.Write();
// Shows the results
ShowResult(Result);
TxtRes_A.Text = Client.ErrorText(Writer.Results[0]);
TxtRes_B.Text = Client.ErrorText(Writer.Results[1]);
TxtRes_C.Text = Client.ErrorText(Writer.Results[2]);
}
void ReadSZL()
{
S7Client.S7SZL SZL = new S7Client.S7SZL();
int Size = 4096; // Declare our Buffer Size
SZL.Data = new byte[Size];
label29.Text = "0";
TxtSZL.Text = "";
int Result = Client.ReadSZL(Convert.ToInt32(TxtSZLID.Text), Convert.ToInt32(TxtSZLIndex.Text), ref SZL, ref Size);
ShowResult(Result);
if (Result == 0)
{
label29.Text = Size.ToString();
HexDump(TxtSZL, SZL.Data, Size);
}
}
private void PlcDBWrite()
{
// Declaration separated from the code for readability
int DBNumber;
int Size;
int Result;
DBNumber = System.Convert.ToInt32(TxtDB.Text);
Size = System.Convert.ToInt32(TxtSize.Text);
Result = Client.DBWrite(DBNumber, 0, Size, Buffer);
ShowResult(Result);
}
void ReadCPUInfo()
{
S7Client.S7CpuInfo Info = new S7Client.S7CpuInfo();
txtModuleTypeName.Text = "";
txtSerialNumber.Text = "";
txtCopyright.Text = "";
txtAsName.Text = "";
txtModuleName.Text = "";
int Result = Client.GetCpuInfo(ref Info);
ShowResult(Result);
if (Result==0)
{
txtModuleTypeName.Text = Info.ModuleTypeName;
txtSerialNumber.Text = Info.SerialNumber;
txtCopyright.Text = Info.Copyright;
txtAsName.Text = Info.ASName;
txtModuleName.Text = Info.ModuleName;
}
}
void ReadOrderCode()
{
S7Client.S7OrderCode Info = new S7Client.S7OrderCode();
txtOrderCode.Text = "";
txtVersion.Text = "";
int Result = Client.GetOrderCode(ref Info);
ShowResult(Result);
if (Result == 0)
{
txtOrderCode.Text = Info.Code;
txtVersion.Text = Info.V1.ToString() "." Info.V2.ToString() "." Info.V3.ToString();
}
}
private void button1_Click(object sender, EventArgs e)
{
// These are tests done on my DB
DateTime DT = DateTime.Now;
S7.SetSIntAt(Buffer, 40, -125);
S7.SetIntAt(Buffer, 42, 32501);
S7.SetDIntAt(Buffer, 44, -332501);
S7.SetLIntAt(Buffer, 48, -99832501);
S7.SetRealAt(Buffer, 56, (float)98.778);
S7.SetLRealAt(Buffer, 60, 123000000000.778);
S7.SetUSIntAt(Buffer, 24, 125);
S7.SetUIntAt(Buffer, 26, 32501);
S7.SetUDIntAt(Buffer, 28, 332501);
S7.SetULintAt(Buffer, 32, 99832501);
S7.SetDateAt(Buffer, 80, DT);
S7.SetTODAt(Buffer, 82, DT);
S7.SetDTLAt(Buffer, 112, DT);
S7.SetLTODAt(Buffer, 86, DT);
S7.SetLDTAt(Buffer, 94, DT);
PlcDBWrite();
}
private void btnMultiRead_Click(object sender, EventArgs e) //MultiRead
{
DBMultiRead();
}
private void btnMultiWrite_Click(object sender, EventArgs e) //MultiWrite
{
DBMultiWrite();
}
private void ReadSZLBtn_Click(object sender, EventArgs e)
{
ReadSZL();
}
private void ReadCPUInfoBtn_Click(object sender, EventArgs e)
{
ReadCPUInfo();
}
private void ReadOrderCodeBtn_Click(object sender, EventArgs e)
{
ReadOrderCode();
}
private void button3_Click(object sender, EventArgs e) //读取PLC日期时间
{
DateTime DT = new DateTime();
if (Client.GetPlcDateTime(ref DT) == 0)
{
txtDateTime.Text = DT.ToLongDateString() " - " DT.ToLongTimeString();
}
}
private void SetDateTimeBtn_Click(object sender, EventArgs e) //将当期系统时间写入PLC
{
ShowResult(Client.SetPlcSystemDateTime()); //状态栏结果显示
}
private void SetPwdBtn_Click(object sender, EventArgs e)
{
ShowResult(Client.SetSessionPassword(txtPwd.Text)); //状态栏结果显示
}
private void ClrPwdBtn_Click(object sender, EventArgs e)
{
ShowResult(Client.ClearSessionPassword()); //状态栏结果显示
}
void ShowPlcStatus()
{
int Status = 0;
int Result = Client.PlcGetStatus(ref Status);
ShowResult(Result); //状态栏结果显示
if (Result == 0)
{
switch (Status)
{
case S7Consts.S7CpuStatusRun:
{
lblStatus.Text = "RUN";
lblStatus.ForeColor = System.Drawing.Color.LimeGreen;
break;
}
case S7Consts.S7CpuStatusStop:
{
lblStatus.Text = "STOP";
lblStatus.ForeColor = System.Drawing.Color.Red;
break;
}
default:
{
lblStatus.Text = "Unknown";
lblStatus.ForeColor = System.Drawing.Color.Black;
break;
}
}
}
else
{
lblStatus.Text = "Unknown";
lblStatus.ForeColor = System.Drawing.Color.Black;
}
}
string HexByte(byte B)
{
string Result = Convert.ToString(B, 16);
if (Result.Length < 2)
Result = "0" Result;
return "0x" Result;
}
string HexWord(ushort W)
{
string Result = Convert.ToString(W, 16);
while(Result.Length<4)
Result = "0" Result;
return "0x" Result;
}
void GetBlockInfo()
{
S7Client.S7BlockInfo BI = new S7Client.S7BlockInfo();
int[] BlockType =
{
S7Client.Block_OB,
S7Client.Block_DB,
S7Client.Block_SDB,
S7Client.Block_FC,
S7Client.Block_SFC,
S7Client.Block_FB,
S7Client.Block_SFB
};
txtBI.Text = "";
int Result = Client.GetAgBlockInfo(BlockType[CBBlock.SelectedIndex], System.Convert.ToInt32(txtBlockNum.Text), ref BI);
ShowResult(Result); //状态栏结果显示
if (Result==0)
{
// Here a more descriptive Block Type, Block lang and so on, are needed,
// but I'm too lazy, do it yourself.
txtBI.Text = txtBI.Text "Block Type : " HexByte((byte)BI.BlkType) (char)13 (char)10;
txtBI.Text = txtBI.Text "Block Number : " Convert.ToString(BI.BlkNumber) (char)13 (char)10;
txtBI.Text = txtBI.Text "Block Lang : " HexByte((byte)BI.BlkLang) (char)13 (char)10;
txtBI.Text = txtBI.Text "Block Flags : " HexByte((byte)BI.BlkFlags) (char)13 (char)10;
txtBI.Text = txtBI.Text "MC7 Size : " Convert.ToString(BI.MC7Size) (char)13 (char)10;
txtBI.Text = txtBI.Text "Load Size : " Convert.ToString(BI.LoadSize) (char)13 (char)10;
txtBI.Text = txtBI.Text "Local Data : " Convert.ToString(BI.LocalData) (char)13 (char)10;
txtBI.Text = txtBI.Text "SBB Length : " Convert.ToString(BI.SBBLength) (char)13 (char)10;
txtBI.Text = txtBI.Text "Checksum : " HexWord((ushort)BI.CheckSum) (char)13 (char)10;
txtBI.Text = txtBI.Text "Version : 0." Convert.ToString(BI.Version) (char)13 (char)10;
txtBI.Text = txtBI.Text "Code Date : " BI.CodeDate (char)13 (char)10;
txtBI.Text = txtBI.Text "Intf.Date : " BI.IntfDate (char)13 (char)10;
txtBI.Text = txtBI.Text "Author : " BI.Author (char)13 (char)10;
txtBI.Text = txtBI.Text "Family : " BI.Family (char)13 (char)10;
txtBI.Text = txtBI.Text "Header : " BI.Header;
}
}
void GetSelectedDB()
{
int Size = 65536; // 64 K (the maximum for a S7400)
byte[] Buffer = new byte[Size];
txtDBGet.Text = "";
int Result = Client.DBGet(System.Convert.ToInt32(txtBlockNum.Text), Buffer, ref Size);
ShowResult(Result); //状态栏结果显示
if (Result==0)
{
HexDump(txtDBGet, Buffer, Size);
}
}
private void PlcStatusBtn_Click(object sender, EventArgs e)
{
ShowPlcStatus();
}
private void PlcStopBtn_Click(object sender, EventArgs e)
{
ShowResult(Client.PlcStop()); //状态栏结果显示
ShowPlcStatus();
}
private void PlcHotBtn_Click(object sender, EventArgs e)
{
ShowResult(Client.PlcHotStart()); //状态栏结果显示
ShowPlcStatus();
}
private void PlcColdBtn_Click(object sender, EventArgs e)
{
ShowResult(Client.PlcColdStart()); //状态栏结果显示
ShowPlcStatus();
}
private void BlockInfoBtn_Click(object sender, EventArgs e)
{
GetBlockInfo();
}
private void DBGetBtn_Click(object sender, EventArgs e)
{
GetSelectedDB();
}
}
}
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