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/'
Digital switch (BCD x
4
digits)
1
--
L
4
5-3-5.
Remote counter setting
(1) Subject
Remote counter setting is executed by means
of
a
4 digit digital switch, the present value
display for the counter is driven by the output of BCD
x
4
digits, and respective outputs are
executed when 100 ahead, 50 ahead and count-up.
When the counter set value is smaller than 100, display of the setting error is out put.
(2) Program design outlines
Kx31
. X O Y
I/O
U N I T
0
PB
Start
x 2 1
1
-------.oo---
YB
I
Reset or stop
x 2 2
1
-
0
c
Count pulse
x 2 3
1
t-l
I
DC24V
L
------+-
I/O
U N I T 1
x20-23
1
1 6
poi
1/0
1JN
1T2
(30-4F
)#
24v
Present value display
HCD
X
4digits
Fig. 5-3 I . Remote counter setting
l/'O
[ I N I T 3
A(;
100
V
+
,Y%
l J
Setting
error
ON during
operation
ON
100
@'ahead
L
,ON 50
y
5 3
ahead
J 5 4
ON at
0
stop
The I/O units KX31, KX10, KY31 and KY10 are arranged as in the above figure. Assign the X
and Y
numbers carefully.
-59-
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