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plc basic functions - 15.17<br />

EQU<br />

A int_3<br />

B int_2<br />

NEQ<br />

A int_3<br />

B int_2<br />

LES<br />

A int_3<br />

B int_2<br />

LEQ<br />

A int_3<br />

B int_2<br />

GRT<br />

A int_3<br />

B int_2<br />

GEQ<br />

A int_3<br />

B int_2<br />

O_0<br />

O_1<br />

O_2<br />

O_3<br />

O_4<br />

O_5<br />

int_3=5<br />

int_2=3<br />

int_3=3<br />

int_2=3<br />

int_3=1<br />

int_2=3<br />

O_0=0<br />

O_1=1<br />

O_2=0<br />

O_3=0<br />

O_4=1<br />

O_5=1<br />

O_0=1<br />

O_1=0<br />

O_2=0<br />

O_3=1<br />

O_4=0<br />

O_5=1<br />

O_0=0<br />

O_1=1<br />

O_2=1<br />

O_3=1<br />

O_4=0<br />

O_5=0<br />

Figure 15.16<br />

Comparison Function Examples<br />

The ladder logic in Figure 15.16 is recreated in Figure 15.17 with the CMP function<br />

that allows text expressions.<br />

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