flowmeter.frm

流量计工控软件

VERSION 5.00
Object = "{648A5603-2C6E-101B-82B6-000000000014}#1.1#0"; "MSCOMM32.OCX"
Begin VB.Form Sendflm 
   Caption         =   "Sendfrm"
   ClientHeight    =   1470
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   3930
   LinkTopic       =   "Form1"
   ScaleHeight     =   1470
   ScaleWidth      =   3930
   StartUpPosition =   3  'Windows Default
   Begin VB.TextBox SendC 
      Height          =   375
      Left            =   240
      TabIndex        =   0
      Top             =   240
      Width           =   2415
   End
   Begin MSCommLib.MSComm MSComm1 
      Left            =   3360
      Top             =   840
      _ExtentX        =   1005
      _ExtentY        =   1005
      _Version        =   393216
      DTREnable       =   -1  'True
   End
End
Attribute VB_Name = "Sendflm"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Private Sub Form_Load()
Dim COM As String
Dim MsgCom As String
MSComm1.CommPort = "4" '设定串口号
COM = COM4
MSComm1.Settings = MscomSetting '设置通信格式
MSComm1.OutBufferSize = 1024   '接受缓冲区的字节数
MSComm1.PortOpen = True '打开端口

MsgCom = "串口" + COM + "打开成功"
MsgBox MsgCom

MSComm1.SThreshold = 8 '产生通信事件的发送字符数
End Sub

Private Sub MSComm1_OnComm()
Dim EventErr As String
EventErr = MSComm1.CommEvent
Select Case EventErr
 Case 1
       
       
 Case 2
 
End Select
End Sub

Private Sub SendC_Change()
 MSComm1.Output = CVar(SendC.Text)
End Sub