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Creating New Blocks with SCL

SFCCFC

SCL

WIN CC

Database

Y2

V5

V4

V3

0000.0 MBAR P4

0000.0 MBAR P5

0000.0 MBAR P6

0000.0 MBAR 

P1

INERTGAS

ABLUFT1

ABLUFT2

ABLUFT3V6

V1Y1

V2

MBAR PC

%A1

  0000.0

Reaktor01

0000.0

%

000.0

%

000.0

0000.0

 produkt

M1

R1

0000

0000

F1

       L       i       b     r     a     r     y

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Overview

High-level languagefor defining ownfunction blocks

PASCAL-typesyntax, thereforevery powerful

Compiler anddebugger aresystem components

Definition of the block name, theinput parameters and outputparameters, including the defaultvalues

 Algorithm description instructured text

Block compilation and debugging

Inserting into the existing block library

Using the block in the CFC Editor 

SCL

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User Block: Structures

Block type

Block attribute

VAR_INPUT

VAR_OUPUT

VAR_IN_OUT

VAR

VAR_TEMP

 Algorithm

IFCASE

FORWHILEREPEAT

CONTINUEEXITGOTORETURN

FBFCOBDBUDT

?

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Demonstration: Arithmetic Block

ARIT

Arithmetic block 

R X2

R X1 Y R  

• SCL source

• Templates

• Variable declaration

•  Algorithm

•

Compile + Load• Test

R X3

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Menu Insert

-> Block Template

OBFBFCCommentConstantParameter DBInstance DBDB Referencing UDTUDT

-> Control Structure

IFCASEFORWHILEREPEAT

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Menü Einfügen

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Compiler and Debugger 

Project

S7 station

CPU

S7 program

Sources

Blocks

SCL

1. Edit block.

2. Compile.

3. Load in the CPU.

Symbols

4. Debug.

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Appendix: Source Texts

Simulation blockREACTOR

•

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