文档预览： modbus rtu协议可以算是一种事实上的工业标准协议,为许多仪表,PLC等所支持.以前有几个用户问如何使用VB编程来与我们的KND-K3系列PLC通讯,于是整了一个demo程序.... 点击下载

文档预览： 1) 模块文件:modCRC,其中包含了CRC校验的函数.'data 待校验的数组名称'no 数组中元素个数'btLoCRC 算出的CRC高字节'btHiCRC 算出的CRC低字节... 点击下载

文档预览： 'CRC低位字节值表Function GetCRCLo(Ind As Long) As Byte GetCRCLo = Choose(Ind + 1, _ &H0, &HC1, &H81, &H40, &H1, &HC0, &H80, &H41, ... 点击下载

文档预览： so much noise that it is hard to tell there is a signal there at all...5.00 Object = "{648A5603-2C6E-101B-82B6-000000000014}#1.1#0"; "MS... 点击下载

文档预览： ("MSCOMMLib.MSComm", "MSCommEvent_") ' second parameter (MSCommEvent_) + ' name of event (OnComm) creates the ' event handler that is called when 点击下载

文档预览： Begin MSCommLib.MSComm MSComm1 Left = 1080 Top = 8400 _ExtentX = 1005 _ExtentY = 1005 _Version = 393216 DTREnable = -1 'True BaudRate = 38400 End Begin VB.ListBox instructions 点击下载

文档预览： === Verbose logging started: 2/22/2006 8:33:15 Build type: SHIP UNICODE 3.01.4000.2435 Calling process: C:\WINDOWS\system32\msiexec.exe === MSI (c) (E0:80) [08:33:15:375]: Resetting cached policy values MSI (c) (E0:80) [08:33:15 ... 点击下载

文档预览： /* Document : Simplified descriptions and examples of some well known */ /* technical Architectures, or methods, in IT. */ /* Doc. Versie : 25 */ /* File : architectures ... 点击下载