18
H7CX (Counter Function)H7CX (Counter Function)
■ Input Modes and Present Value
Note: 1. If the configuration selection is set to dual counter, re-
gardless of the input mode setting, CP1 and CP2 input
will operate in the same way as the count input (CP1)
of UP (increment) mode.
2.
must be greater than the minimum signal width and
must be at least 1/2 the minimum signal width. If
they are less, a count error of
1 may occur.
Minimum signal width:16.7 ms (when maximum
counting speed = 30 Hz)
100
m
s (when maximum
counting speed = 5 kHz)
3. The meaning of the H and L symbols in the tables is ex-
plained below.
UP (Increment) Mode DOWN (Decrement) Mode
0
CP1
H
L
CP2
H
L
0
1
2
4
3
5
A A
Prohibit
Present
value
CP1: Count input; CP2: Prohibit (gate) input
Note: Input CP2 while CP1 is "L."
must be greater
than the minimum signal width. (See note 2.)
n
CP1
H
L
CP2
H
L
0
n−1
n−2
n−4
n−3
n−5
A A
Prohibit
Present
value
Note: Input CP2 while CP1 is "L."
must be greater than
the minimum signal width. (See note 2.)
CP1: Count input; CP2: Prohibit (gate) input
0
CP1
H
L
CP2
H
L
0
1
2
4
3
5
A A
Prohibit
Present
value
Note: Input CP1 while CP2 is "H."
must be greater
than the minimum signal width. (See note 2.)
CP1: Prohibit (gate) input; CP2: Count input
n
CP1
H
L
CP2
H
L
0
n−1
n−2
n−4
n−3
n−5
A A
Prohibit
Present
value
Note: Input CP1 while CP2 is "H."
must be greater
than the minimum signal width. (See note 2.)
CP1: Prohibit (gate) input; CP2: Present value
UP/DOWN A
Command Input Mode
UP/DOWN B
Individual Input Mode
UP/DOWN C
Quadrature Input Mode
0
CP1
H
L
CP2
H
L
0
1
2
2
2
1
3
3
A A
Present
value
must be greater than the minimum signal width. (See note 2.)
0
CP1
H
L
CP2
H
L
0
1
2
2
2
11
3
3
Present
value
0
CP1
H
L
CP2
H
L
0
1
2
2
2
1
3
3
B B B B
Present
value
must be at least 1/2 the minimum signal width. (See note 2.)
Input method No-voltage input
(NPN input)
Voltage input
(PNP input)
Symbol
H Short-circuit 4.5 to 30 VDC
L Open 0 to 2 VDC
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