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Conceptos de PLC

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1.6 Conversión entre diagrama <strong>de</strong> escalera y modo <strong>de</strong> lista <strong>de</strong><br />

instrucciones<br />

Diagrama <strong>de</strong> escalera<br />

X0 X2 X1<br />

X1<br />

M0<br />

M1<br />

M2 Y0<br />

S0<br />

S<br />

S10<br />

S<br />

S11<br />

S<br />

S20<br />

S<br />

X0<br />

C0<br />

X10<br />

X11<br />

X12<br />

S12<br />

S<br />

X1<br />

X1<br />

M2<br />

S13<br />

S<br />

C0<br />

X13<br />

Y0<br />

SET S0<br />

Y10<br />

SET S10<br />

Y11<br />

SET S11<br />

SET S12<br />

SET S13<br />

Y12<br />

SET S20<br />

S0<br />

RET<br />

CNT C0 K10<br />

M0<br />

M1<br />

M2<br />

RST C0<br />

END<br />

Instrucción<br />

LD X0<br />

OR X1<br />

LD X2<br />

OR M0<br />

ORI M1<br />

ANB<br />

LD M2<br />

AND Y0<br />

ORB<br />

AN I X1<br />

OUT Y0<br />

AND C0<br />

SET S0<br />

STL S0<br />

LD X10<br />

OUT Y10<br />

SET S10<br />

STL S10<br />

LD X11<br />

OUT Y11<br />

SET S11<br />

SET S12<br />

SET S13<br />

STL S11<br />

LD X12<br />

OUT Y12<br />

SET S20<br />

STL S20<br />

STL S12<br />

STL S13<br />

LD X13<br />

OUT S0<br />

RET<br />

LD X0<br />

CNT C0 K10<br />

LD C0<br />

MPS<br />

AND X1<br />

OUT M0<br />

MRD<br />

AN I X1<br />

OUT M1<br />

MPP<br />

AN I M2<br />

OUT M2<br />

RST C0<br />

END<br />

Bloque<br />

OR<br />

Bloque<br />

OR<br />

Bloque en serie<br />

Bloque<br />

AND<br />

Bloque en paralelo<br />

ANI<br />

Múltiples<br />

salidas<br />

Inicio <strong>de</strong> escalera<br />

Estado S0 opera con X10<br />

1. <strong>Conceptos</strong> <strong>de</strong> <strong>PLC</strong><br />

Salida Y10 y transferencia<br />

<strong>de</strong> punto escalonado<br />

Leer estado S10<br />

S10 opera con X11<br />

Salida Y11 y<br />

transferencia <strong>de</strong> puntos<br />

escalonados<br />

Leer estado S11<br />

S11 opera con X12<br />

Salida Y12 y transferencia<br />

<strong>de</strong> puntos escalonados<br />

Convergencia <strong>de</strong><br />

múltiples estados<br />

Leer estado X13 y<br />

transferencia <strong>de</strong> punto<br />

escalonado<br />

Regresar<br />

Leer C0<br />

Múltiples<br />

salidas<br />

Fin <strong>de</strong> programa<br />

La salida<br />

continua en<br />

base al<br />

estado <strong>de</strong><br />

Fin <strong>de</strong> la<br />

escalera<br />

1-11

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