STEP 7 Professional is a value-priced offering for those users whose application requires more options than are supplied with STEP 7 Basis. It supports the user through all the stages of the development process for automation solutions.
STEP 7 Professional is supplied standard with all five languages defined in the IEC 61131-3 standard for PLC programming:
Ladder Diagram (LAD)
Function Block Diagramm (FBD)
Instruction List (STL)
Structured Text (S7-SCL)
Sequential Function Chart (S7-GRAPH)
In addition, user programs can be tested offline with the supplied simulation software S7-PLCSIM.