Development of procedures for the use of industrial free port agreement is too much trouble, efficiency is not high, PPI agreement either to pay or do not open or not use the Web to find the shortcut you have not, forget, own, after a week The work, carried out using VC this DLL for Siemens S7-200 PLC communication, reading 100 data time-consuming 250ms, very efficient, in the vc, delphi, vb, C#. NET platform to test the effect of good ah, development efficiency several times, and would like to share with the fans, with source

西门子200PLC上位机通信 经典源码
...............................\delphi
...............................\......\Project1.cfg
...............................\......\Project1.dof
...............................\......\Project1.dpr
...............................\......\Project1.exe
...............................\......\Project1.res
...............................\......\S7_200_PPI.dll
...............................\......\Unit1.dcu
...............................\......\Unit1.ddp
...............................\......\Unit1.dfm
...............................\......\Unit1.pas
...............................\......\Unit1.~ddp
...............................\......\Unit1.~dfm
...............................\......\Unit1.~pas
...............................\Modbus_RTU
...............................\..........\Modbus_RTU.dll
...............................\..........\Project1.cfg
...............................\..........\Project1.dof
...............................\..........\Project1.dpr
...............................\..........\Project1.exe
...............................\..........\Project1.res
...............................\..........\Unit1.dcu
...............................\..........\Unit1.ddp
...............................\..........\Unit1.dfm
...............................\..........\Unit1.pas
...............................\..........\Unit1.~ddp
...............................\..........\Unit1.~dfm
...............................\..........\Unit1.~pas
...............................\vb
...............................\..\Form1.frm
...............................\..\Form1.frx
...............................\..\MSSCCPRJ.SCC
...............................\..\S7_200_PPI.bas
...............................\..\S7_200_PPI.dll
...............................\..\工程1.exe
...............................\..\工程1.vbp
...............................\..\工程1.vbw
...............................\说明.txt

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