Page History

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• Be more familiar with the TIA Syntax well known by S7 programmers
• Add Type Information to support all available TIA types
• "Type inference" to be not too verbose

Supported types

Syntax

Datablocks

Addressing is different for non-primitive and primitive types.

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P#DB{db-number}.DBX{byte-offset}.{bit-offset}
Note, here, bit offset is not optional but usually always 0

Type identifier Postfix

Primitives

Generally the TIA Syntax is used:

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SINT
USINT
DINT
LREAL
LINT
ULINTtax

Strings

Please see https://support.industry.siemens.com/tf/WW/en/posts/string-data-type/51621?page=0&pageSize=10

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%DB3.DX4.1
%DB3.DX4.1:BOOL
%DB3.DB4:INT
%DB3.DB4:UINT
%DB3.DW4:REAL

Special Data Areas: Markers, Inputs, Outputs

They are always adressed bit-wise and the syntax is similar to TIA.

// Marker
%M1.0 // byte 1, bit 0
%I0.5 // byte 0, bit 5
%Q1.1 // byte 1, bit 1

Additional Documents

Programming Guideline

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Direct Adressing Overview

http://www.multiprojekt.pl/ftp/weintek_hmi/plc_connection_guide/Siemens_S7_1200_S7_1500_absolute_addressing_Ethernet.pdf