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6 CONVENIENT USAGE
6.3 Using the Latch Counter Function
Count enable command
{Y04 (Y0C)}
Present value storage buffer memory
{Addresses 2
to 3
(22
H
H
H
Counter function selection start command
{Y06 (Y0E), Function start input}
Latch count value storage buffer memory
{Addresses C
to D
(2C
H
H
6 - 5
The latch counter function latches the present counter value at the time a signal was
entered.
The relationships between the present counter value for the latch counter function, the
counter function selection start command and the latch count value storage buffer
memory are illustrated below:
ON
OFF
150
100
50
to 23
)}
H
0
ON
OFF
150
100
50
to 2D
)}
H
H
0
When the counter function selection start command {Y06 (Y0E), function start input}
rises at points indicated by 1) to 4) in the figure above, the present counter value is
stored in the latch count value storage buffer memory {addresses C
2D
)}. The latch counter function is executed regardless of whether the count enable
H
command {Y04 (Y0C)} turns ON/OFF.
50
0
1)
2)
0
MELSEC-Q
100
3)
100
50
to D
H
130
4)
130
(2C
to
H
H
6 - 5
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