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Statement List (STL) - DCE FEL ČVUT v Praze

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5 Data Block Instructions<br />

5.1 Overview of Data Block Instructions<br />

Description<br />

You can use the Open a Data Block (OPN) instruction to open a data block as a<br />

shared data block or as an instance data block. The program itself can accomodate<br />

one open shared data block and one open instance data block at the same time.<br />

The following Data Block instructions are available:<br />

• OPN Open a Data Block<br />

• CDB Exchange Shared DB and Instance DB<br />

• L DBLG Load Length of Shared DB in ACCU 1<br />

• L DBNO Load Number of Shared DB in ACCU 1<br />

• L DILG Load Length of Instance DB in ACCU 1<br />

• L DINO Load Number of Instance DB in ACCU 1<br />

<strong>Statement</strong> <strong>List</strong> (<strong>STL</strong>) for S7-300 and S7-400 Programming<br />

A5E00706960-01 5-1

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