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Entry type: FAQ Entry ID: 50204938, Entry date: 11/13/2013

How do you program the PLC with STEP 7 (TIA Portal) in compliance with the IEC 61131-3 standard?

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The attached PDF document gives you detailed information.

The programming languages of SIMATIC STEP 7 (TIA Portal) meet the requirements of IEC 61131-3. The IEC 61131-3 standard is the only standard valid worldwide for the programming languages of programmable logic controllers.
The following table gives you an overview:

 STEP 7 (TIA Portal) IEC 61131-3 languages 
 Instruction List (AWL/STL) Corresponds to IEC 61131-3 language "AWL/IL"
 Ladder Logic KOP/LAD Corresponds to IEC 61131-3 language "KOP/LD"
 Function Block Diagram FUP/FBD Corresponds to IEC 61131-3 language "FUP/FBD"
 Structured Control Language SCL Corresponds to IEC 61131-3 language "ST"*
 S7-GRAPH Corresponds to IEC 61131-3 language "AS/SFC"*

Detailed information is available in the "IEC_61131_Compliance" file.

IEC_61131_compliance_e.pdf (122 KB)

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