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Step7 Basic operations, program blocks - DCE FEL ČVUT v Praze

Step7 Basic operations, program blocks - DCE FEL ČVUT v Praze

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• Examples<br />

– Register indirect area addressing<br />

OPN DB10<br />

LAR1 P#10.0<br />

L MW[AR1,P#4.0]<br />

A DBX[AR1,P#0.3]<br />

– Register indirect out‐of‐area addressing<br />

LAR1 P#M12.0<br />

L B[AR1,P#2.0]<br />

= [AR1,P#0.7]<br />

What have we said today?<br />

• Timers and counters<br />

• <strong>Basic</strong>s of OBs, FCs and FBs in <strong>Step7</strong><br />

• Data <strong>blocks</strong> (instant, global), examples<br />

• Indirect addressing in <strong>Step7</strong><br />

Indirect addressing<br />

Summary<br />

3.10.2012<br />

10

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