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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
D0K100MOV
D0K10MOV
X2
6
X3
9
D0K1000MOV
M0SET
X4
11
M0RST
T8
D0
Y72
T8
19
Y71
Stops timer
Set value 10sec.
Set value 100sec.
Turns on by time-out