救命！怎么用vb实现串口通信

62guangye 2003-09-03 09:40:28

通信格式：5AH 5AH 硬件地址计算机地址命令
怎么才能读到硬件发出的信号
光用mscomm1.input怎么不行呢？
''''''''''''''''''''''''''''''''''''''''''
Private Sub Command1_Click()
MSComm1.Output = Trim(Text1.Text)
End Sub

Private Sub Command2_Click()
Text2.Text = MSComm1.Input
End Sub

Private Sub Command3_Click()
MSComm1.PortOpen = False
End

End Sub

Private Sub Form_Load()
MSComm1.PortOpen = True
End Sub

...全文