3.22 UDC (Up/Down Counter)
■
Ladder diagram
■
List of operands
Operand Description
n Counter number
S Counter set value
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Devices that can be specified (indicated by ●)
Operan
d
16-Bit device:
32-Bit
device:
Integer
Real
numbe
r
St
rin
g
Index
modifie
r
W
X
W
Y
W
R
W
L
W
S
S
D
D
T
L
D
U
M
WI
W
O
TS
C
S
(N
ote
1)
TE
C
E
IX K U H SF
D
F
" "
n ● ●
S ● ● ● ● ● ● ● ● ●
(Note 1) Only CS can be specified.
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Outline of operation
● This counter can increment (up count) or decrement (down count) depending on the ON/OFF
state of the relay specified by the up/down input.
● The count operation is incremental counting (+1) when the up/down input is ON, and
decremental counting (-1) when the up/down input is OFF. The elapsed value is stored in the
[CEn] area.
3.22 UDC (Up/Down Counter)
3-66 WUME-FP7CPUPGR-12