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) + Windows 7 Professional/Enterprise/Ultimate (64 Bit) + Windows 7 Professional/Enterprise/Ultimate SP 1 (32 Bit) + Windows 7 Professional/Enterprise/Ultimate (32 Bit) You can download the trial for SIMATIC STEP 7 V5.5 SP4 and test it using the trial. Simatic Step 7 Professional V5.5 supports the following operating systems: Perhaps the following topic might help: Trial download SIMATIC STEP 7 V5.5 SP4. 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.