sorry for the less info. I;am working with a siemens plc 300 cpu. Where trying to made a program from SFC sequential flow charts 2 plc. The first SFC is made in the step7 program from siemens. in the SFC i'am calling a FB10 to do something ( bring all conveyers to start position ) I made a new SFC (FB10) to bring everthing back to his start position. Can i make steps in this FB10 ?