这是西门子PLC通讯程序，无线传输，非常有用的例子，赶快下载-Siemens PLC communication program, wireless transmission, very useful example, to download

An example of OPC data interface with PC. It contains a MS-Excel workbook along with a PLC Software written in STL S7 v5.5. It is also having a user manual which gives step by step quidance for configuring OPC server in PLC and OPC client in vba scr

It provides an example of OPC data interface as client in MS-Excel. The code is written in VB scr ipt in excel workbook which imports data from S7 PLC via OPC protocol through MPI interface.

An example of establishing communication between siemens HMI and PC. HMI project has been attached here alonmg with vb project. Communication medium is MPI. Data is read/write through VB user form into siemens PLC.