Hi can you please elaborate which are the different types of obs, sfc, and sfb available in s300? How to incorporate them in program? List of all ob,sfc is available for download on Siemens platform but it's very hard to understand there exact usage and how to use them.
Thanks in advance
Siemens has a document called: S7 300 parameter manual. The functions you are interested in: OB starts on page 66 (section 9.35), SFC on page 71 (section 9.39), and SFB on page 79 (section 9.40). Not all S7-300 CPU's have the same capabilities, so pay close attention to the charts in these sections. I suggest you keep this manual in an accessible place since it has so much valuable information.
Thanks for your help.