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Entry type: FAQ Entry ID: 8790932, Entry date: 11/06/2003
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IEC 61131-3 and SIMATIC S7

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QUESTION:
To which extend can I execute the PLC programming with SIMATIC S7 according to IEC 61131-3?

ANSWER:
An overview can be found in table 1:

IEC 61131-3 Languages SIMATIC S7
IL - Instruction List STL (covers a part of the functions defined in IEC 61131-3 (starting at - see *)
ST - Structured Text S7-SCL (certifies according to IEC 61131-3
and PLCopen Base Level)
FBD - Function Block Diagram FBD (covers a part of the functions defined in IEC 61131-3 (starting at - see *)
LD - Ladder Diagram LAD (covers a part of the functions defined in IEC 61131-3 (starting at - see *)
SFC - Sequential Function Chart S7-GRAPH (certifies according to IEC 61131-3
and PLCopen Base Level)

* : Detailed information is provided by the file "norm_tab.wri" or "norm_tbl.wri"

Table 1: Showing of IEC and SIMATIC S7 face to face

The file "norm_tab.wri" (German) or "norm_tbl.wri" (Enlisch) can be found in the register SIEMENS\STEP7, after the installation of STEP 7 on your PG/PC.

Attached, you can also download "norm_tab.wri" or "norm_tbl.wri" directly for STEP 7 V5.2 as pdf:

norm_tab.pdf ( 26 KB )

norm_tbl.pdf ( 25 KB )


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