Hello, Dariusch
S7-300 programming: Step 7,now at version 5.3
OP170 B programming: Protool, now at version 6 (soon to be WinCC Flexible, mini-format)
Cables:
S7-300: Choose beteen PC-Adapter (serial to MPI converter) or MPI card on your PC with MPI cable
OP170 B: serial null-modem cable for programming and download; MpI or Profibus cable for connection to the S7-300.
contact your siemens rep for part no's and more info.
Hope this helps,
Daniel Chartier