S7A驱动，7.20版本， Version history S7A OPC server and FIX driver for Siemens S7/S5 communication via Ethernet TCP/IP, MPI or Profibus Versio n 7.20 Date: 26.02.2007 Version history =========================================================================
Copyright (c) Microsoft Corporation. All rights reserved. You may only use this code if you agree to the terms ofthe Windows Research Kernel Source Code License agreement(see License.txt). If you do not agree to the terms, do not use the code.***WRK
