求解一段代码的意思,在线等!!!
Response = IIf(Val(Response) = 0, "&H00", "&H" & Mid(Response, 1, 2))
If (Response And &H40) <> &H40 Then
MsgBox "Please check the AC Power supply and the 12V/DC & 24V/DC Power Supply, or reboot the computer."
Call SendString(OmsHandle, "BH7 RS WQ")
cmdPowerOn.Enabled = True
cmdExit.Enabled = True
Exit Sub
End If
对于红色字体的部分不是很理解,谁能解释一下...