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App. - 21

 

 

 
Appendix 4.14    Switching timer set value externally 

(1)  With an external switch, a value to be set in one timer can be selected from 

three patterns; 1sec., 10sec., and 100sec. 

A timer is activated and reset with a push button switch. 

 

X0

1sec.

X1

10sec.

X2

100sec.

X3

Starts timer

X4

Resets timer

PB

PB

SC

Input power supply

Load power supply

Y70

Y70

Y70

MC

RL

OL

Load

Indicates the timer 
has gone time out.

Indicates the timer 
is in operation.

 

 

Project name 

QA-22 

Program name 

MAIN 

 

Y70

X0

M0

0

12

Set value 1sec.

Starts timer

Turns on while timer 
is in operation

X1

3

D0

K100

MOV

D0

K10

MOV

X2

6

X3

9

D0

K1000

MOV

M0

SET

X4

11

M0

RST

T8

D0

Y72

T8

19

Y71

Stops timer

Set value 10sec.

Set value 100sec.

Turns on by time-out