form1.frm

用于电脑和TSDA台湾伺服控制器进行通讯

VERSION 5.00
Object = "{648A5603-2C6E-101B-82B6-000000000014}#1.1#0"; "MSCOMM32.OCX"
Begin VB.Form Form1 
   Caption         =   "Form1"
   ClientHeight    =   4980
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   6975
   LinkTopic       =   "Form1"
   ScaleHeight     =   4980
   ScaleWidth      =   6975
   StartUpPosition =   3  '窗口缺省
   Begin VB.TextBox Text2 
      Height          =   615
      Left            =   960
      TabIndex        =   3
      Text            =   "Text2"
      Top             =   3240
      Width           =   1815
   End
   Begin VB.TextBox Text1 
      Height          =   615
      Left            =   1080
      TabIndex        =   2
      Text            =   "Text1"
      Top             =   2280
      Width           =   1815
   End
   Begin VB.CommandButton Command2 
      Caption         =   "Command2"
      Height          =   375
      Left            =   4680
      TabIndex        =   1
      Top             =   3480
      Width           =   1455
   End
   Begin VB.CommandButton Command1 
      Caption         =   "Command1"
      Height          =   495
      Left            =   4560
      TabIndex        =   0
      Top             =   2520
      Width           =   1575
   End
   Begin MSCommLib.MSComm MSComm1 
      Left            =   1440
      Top             =   720
      _ExtentX        =   1005
      _ExtentY        =   1005
      _Version        =   393216
      DTREnable       =   -1  'True
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Private Sub Mscomm1_Oncomm()

'...通讯事件发生

Dim indata As Variant

Dim bte(0) As Byte

Select Case MSComm1.CommEvent

Case comEvReceive '...有接受事件发生

indata = MSComm1.Input

'...注意！要通过MSComm控件发送或接收二进制数据必须用Variant类型的变量对二进

'...制Byte类型的变量进行转换！

bte(0) = AscB(indata)

Text2.Text = bte(0)

MSComm1.InBufferCount = 0 '...清空输入寄存器

End Select

End Sub

Private Sub Command1_Click()

'...发送数据

Dim Num As Integer

Dim outbte(0) As Byte

Num = Val(Text1.Text)

outbte(0) = VBA.CByte(Num)

MSComm1.OutBufferCount = 0 '...清空输出寄存器

MSComm1.Output = outbte(0) '...发送数据

End Sub

Private Sub Command2_Click()

'...退出

Unload Me

End Sub

Private Sub Form_Load()

'...初始化

MSComm1.CommPort = 1 '...使用Com1口

MSComm1.Settings = "9600,n,8,1" '...设置通讯参数

MSComm1.PortOpen = True '...打开串口

End Sub