If the download link is broken, please comment below the article, plc247. + S7-PLCSIM: Simulation Software Simulator Link Download Software > Download STEP 7 Professional V5.5 SP3 > Download S7-PLCSIM S7-300/S7-400 Password Extract: + Step 7 Basic Software: Hardware configuration, programming Ladder, FBD, IL Simatic Step 7 Professional V5.5 includes the following software packages: + Windows Server 2008 Standard Edition R2 SP1 (64 Bit)

+ Windows Server 2008 Standard Edition R2 (64 Bit) + Windows 7 Professional/Enterprise/Ultimate SP 1 (64 Bit) Step7, s7-300 plc, s7-400 plc, plcsim, simatic s7, simatic manager, libnodave - mhj-software. + Windows 7 Professional/Enterprise/Ultimate (64 Bit) + Windows 7 Professional/Enterprise/Ultimate SP 1 (32 Bit) + Windows 7 Professional/Enterprise/Ultimate (32 Bit) Simatic Step 7 Professional V5.5 supports the following operating systems:

This is the version used for Windows 32bit (64bit) computers. STEP 7 Professional V5.5 software is Siemens software used to program the S7-300, S7-300 PLC.

Step 7 5.5 download