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 =========================================================================

SI7 Version 7.23 Release Notes 07/30/04 This document is available from the Start menu in the program group specified at the time of installation. Contents A. Required Software B. General Information C. Known Issues D. Troubleshooting D.1 Automatica

1.软件配置：office 2003，ifix4.0，step7 v5.4 sp3CN，PlcSim v5.4，S7A V7.20 Build(221)(S7A OPC Server for Simens S7),WinCC 6.0,WinccFlexible 2007. 2.测试内容：测试能否在ifix中通过S7A驱动由mpi通讯对PlcSim5.4 for S7进行数据读取。 3.测试步骤：先简要说下。 先测试数据的读取。 （1）先组态s7，建一测设工程，然后打开plcsim，将s7站下载

ifix驱动device