Delta DVP-ES2 User Manual download pdf (Page 15)

100

101

1. PLC Concepts

1-7

Execution order of the sample program:

1 LD X0

2 OR M0

3 AND X1

4 LD X3

AND M1

ORB

5 LD Y1

AND X4

6 LD T0

AND M3

ORB

7 ANB

8 OUT Y1

TMR T0 K10

1.5.2 LD / LDI (Load NO contact / Load NC contact)

LD or LDI starts a row or block

AND block OR block

LD instruction LD instruction

1.5.3 LDP / LDF (Load Rising edge trigger/ Load Falling edge trigger)

Similar to LD instruction, LDP and LDF instructions only act at the rising edge or falling edge when

the contact is ON, as shown in the figure below.

OFF

Time

Rising-edge

OFF

Time

Falling-edge

1.5.4 AND / ANI (Connect NO contact in series / Connect NC contact in series)

AND (ANI) instruction connects a NO (NC) contact in series with another device or block.

AND instruction AND instruction

1.5.5 ANDP / ANDF (Connect Rising edge in series/ Connect Falling edge in series)

Similar to AND instruction, ANDP (ANDF) instruction connects rising (falling) edge triggers in series

with another device or block.

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Delta DVP-ES2 User Manual Page 15

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