TCP/IP通讯威纶通HMI

【实例简介】

TCP/IP通讯威纶通HMI,可读取、设置任意地址。

【实例截图】

【核心代码】

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, ScktComp, RzButton, Mask, RzEdit, RzCmboBx, ExtCtrls,
  RzRadChk;

type
  TForm1 = class(TForm)
    ClientSocket1: TClientSocket;
    Edit1: TRzEdit;
    Button1: TRzButton;
    Edit2: TRzEdit;
    Label1: TLabel;
    RzEdit1: TRzEdit;
    Label2: TLabel;
    Label3: TLabel;
    RzEdit2: TRzEdit;
    RzEdit3: TRzEdit;
    RzComboBox1: TRzComboBox;
    Label4: TLabel;
    RzEdit4: TRzEdit;
    Label5: TLabel;
    RzComboBox2: TRzComboBox;
    Label6: TLabel;
    RzButton2: TRzButton;
    Shape1: TShape;
    RzCheckBox1: TRzCheckBox;
    procedure Button1Click(Sender: TObject);
    procedure ClientSocket1Read(Sender: TObject; Socket: TCustomWinSocket);
    procedure FormCreate(Sender: TObject);
    procedure RzButton2Click(Sender: TObject);
    procedure ClientSocket1Connect(Sender: TObject;
      Socket: TCustomWinSocket);
    procedure ClientSocket1Disconnect(Sender: TObject;
      Socket: TCustomWinSocket);
    procedure ClientSocket1Connecting(Sender: TObject;
      Socket: TCustomWinSocket);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

//function StrOfHex(AStr: string): string;
//var
//  I, len: Integer;
//  tmps: string;
//begin
//  len := length(AStr);
//  Result := '';
//  for I := 1 to Trunc(len / 2) do
//  begin
//    tmps := Copy(AStr, (I - 1) * 2 1, 2);
//    Result := Result Chr(StrToIntdef('$' tmps, 0));
//  end;
//end;

Function HexToStr(HexStr:String):string;
  var
   i,tmplen:Integer;
   tmpstr:string;
 begin
   Result:='';
   tmplen:=Length(HexStr) div 2;
   for i:=1 to tmplen do
    begin
     tmpstr:=Copy(HexStr,2*i-1,2);
     Result:=Result Chr(StrToInt('$' tmpstr));
    end;
 end;

Function BuildTCPStr(HexStr:String):string;
  var
   tmplen:Integer;

 begin
   tmplen:=Length(HexStr) div 2;
   Result:=IntToHex(tmplen,12) HexStr;
 end;

Function ToSendStr(HexStr:String):string;
begin
   HexStr:=BuildTCPStr(HexStr);
   Result:=HexToStr(HexStr);
end;


procedure TForm1.Button1Click(Sender: TObject);
var
   tmpHMICMD,tmpTag:string;
   tmpReadNum:Integer;
begin
if RzCheckBox1.Checked then
begin
     tmpHMICMD:= RzComboBox1.Value;   //写标志

     tmpHMICMD:=tmpHMICMD InttoHex(StrToIntDef(RzEdit4.Text,0),4);

     if RzComboBox1.itemIndex=0 then  //位
      begin
        if RzComboBox2.Text='1' then
          tmpHMICMD:=tmpHMICMD 'FF00'
        else
          tmpHMICMD:=tmpHMICMD '0000';
      end
     else
      begin
         tmpHMICMD:=tmpHMICMD InttoHex(StrToIntDef(RzComboBox2.Text,0),4);
      end;

      tmpHMICMD:=IntToHex(StrToIntDef(RzEdit3.Text,0),2) tmpHMICMD;
end
else
begin
    if RzComboBox1.itemIndex=0 then  //位
      tmpTag:='01'
    else
      tmpTag:='04';
    tmpReadNum:=StrtoIntDef(RzComboBox2.text,1);
    tmpHMICMD:=IntToHex(StrToIntDef(RzEdit3.Text,0),2) tmpTag InttoHex(StrToIntDef(RzEdit4.Text,0),4)
              inttohex(tmpReadNum,4);
end;

      Edit1.Text:= tmpHMICMD;
      tmpHMICMD:=ToSendStr(tmpHMICMD);
ClientSocket1.Socket.SendText(tmpHMICMD);
end;

function StrToHex(tmpstr: string): string;
var
  i: Integer;
begin
  Result := '';
  for i := 1 to length(tmpstr) do
    Result := Result IntToHex(Ord(tmpstr[i]), 2);
end;


procedure TForm1.ClientSocket1Read(Sender: TObject;
  Socket: TCustomWinSocket);
var tmpstr:string;
begin
tmpstr:= Socket.ReceiveText;
Edit2.Text:=StrToHex(tmpstr);
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
RzComboBox1.ItemIndex:=0;
RzComboBox2.ItemIndex:=0;
end;

procedure TForm1.RzButton2Click(Sender: TObject);
begin
ClientSocket1.Active:=False;
ClientSocket1.Address:=RzEdit1.Text;
ClientSocket1.Port:=StrToIntDef(RzEdit2.Text,502);
ClientSocket1.Active:=True;
end;

procedure TForm1.ClientSocket1Connect(Sender: TObject;
  Socket: TCustomWinSocket);
begin
   Shape1.Brush.Color:=clGreen;
   Button1.Enabled:=True;
end;

procedure TForm1.ClientSocket1Disconnect(Sender: TObject;
  Socket: TCustomWinSocket);
begin
   Shape1.Brush.Color:=clGray;
   Button1.Enabled:=False;
end;

procedure TForm1.ClientSocket1Connecting(Sender: TObject;
  Socket: TCustomWinSocket);
begin
    Shape1.Brush.Color:=clYellow;
end;


end.