SIMATIC S7-200/300/400 MPI ActiveX

General specification for ActiveX Control - Support Windows 2000/Windows XP/Windows Vista which must have the VB6 runtime environment - Support most development environment which supports ActiveX or OLE design (Visual Basic/Visual C++/C#/VB.NET/VBA/C++ Builder/Delphi and so on) - Support to read and write Bit, Word, Long, Float, Double, Ascii Char String, Wide char string.Feature - Able to Connect up to 31 PLCs via one com port - Support S7-200/300/400 CPUs, can connect both S7-200, S7-300 and S7-400 PLC all together. - Runtime free.