User`s manual

143
CHAPTER 4 FUNCTION
4
4.11 Latch Counter/Preset/replace Function
4.11 Latch Counter/Preset/replace Function
The latch counter/preset/replace function enables the QD65PD2 to execute either of the latch counter function or the
preset/replace function according to the status change of the function input terminal (FUNC1).
(1) Setting for the latch counter/preset/replace function
To use the latch counter/preset/replace function, select "Latch counter/Preset/replace Function" in the "Counter
function selection" in the switch setting.
(2) Operation example of the latch counter/preset/replace function
The following figure shows an operation example of the latch counter/preset/replace function.
0
0
7
50
50
63
100
100
1000
150
ON
OFF
ON
OFF
0
7
63
t *1
1)
2)
5)
4)
3)
5)
Pulses actually input
*1 t 2ms
Updated (1
H)
Not updated (0
H)
Reset (1H)
Not reset (0
H)
CH1 Count enable command
(Y06)
CH1 Preset value
(Un\G1014, Un\G1015)
Function input terminal (FUNC1)
CH1 Present value
(Un\G1050, Un\G1051)
CH1 Latch count value
(Un\G1052, Un\G1053)
CH1 Latch count value update flag
(Un\G1074)
CH1 Latch count value update flag
reset command
(Un\G1022)
Count value stored in CH1 Present value
(Un\G1050, Un\G1051)