User`s manual

129
CHAPTER 4 FUNCTION
4
4.5 Latch Counter Function 4.5.2 Latch counter function (counter function selection)
4.5.2 Latch counter function (counter function selection)
(1) Setting method of the latch counter function (counter function selection)
The latch counter function by counter function selection latches the count value when "Latch Counter Function" is
selected for "Counter function selection" in the switch setting, then the function input terminal (FUNC1) of
external input or CH1 Selected counter function start command (Y07) is input.
(2) Operation example of the latch counter function (counter function selection)
The following figure shows an operation example of the latch counter function (counter function selection).
Number Description
1)
CH1 Present value (Un\G1050, Un\G1051) is stored into CH1 Latch count value (Un\G1052, Un\G1053) at the rise of CH1
Selected counter function start command (Y07) or the function input terminal (FUNC1).
2)
After CH1 Latch count value (Un\G1052, Un\G1053) is updated, Updated (1
H
) is stored into CH1 Latch count value update flag
(Un\G1074).
3)
Set CH1 Latch count value update flag reset command (Un\G1022) to Reset (1
H
), and reset CH1 Latch count value update
flag (Un\G1074) to Not updated (0
H
).
After that, CH1 Latch count value update flag reset command (Un\G1022) is automatically reset to Not reset (0
H
).
4)
CH1 Latch count value (Un\G1052, Un\G1053) is updated even if CH1 Latch count value update flag (Un\G1074) is Updated
(1
H
).
ON
OFF
150
100
50
0
ON
OFF
150
100
50
0
Updated (1
H)
Not updated (0
H)
Reset (1
H)
Not reset (0
H)
0
0
50
50
100
100
130
130
2)
3)
1) 1) 1) 1)
4)
CH1 Count enable command
(Y06)
CH1 Present value
(Un\G1050, Un\G1051)
CH1 Selected counter
function start command (Y07)
or
function input terminal (FUNC1)
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)