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4. Functions
46
CNT-3208M-PE
Preset
Presetting means setting the counter to an arbitrary value.
The value in the preset register is loaded into the counter. Preset methods are listed in the table below,
below, which are software-selectable.
Table 4.2. Preset
Item
Factor
Description
Note
Preset method Software command
Possible to preset for all channels Always available
Control input signal
(rise)
Control input level change
(Low to High)
Available only when the control input
signal has been selected for presetting.
Control input signal
(fall)
Control input level change (High
to Low)
Available only when the control input
signal has been selected for presetting.
Count match(Register0) Count value = Comparison
register 0
Count match(Register1) Count value = Comparison
register 1
Software
The counter is presetting by software either for each channel or for all channels.
Rise/fall of an external input signal
The counter is presetting by an external input signal supplied through the control input pin.
The control input pin is used for preset signal input. The rising or falling edge of the signal can be
selected.
*
When the control input pin is used for presetting, it cannot be used for the counter start/stop, zero-
clear, or general-purpose input.
Count match
The counter is preset when the count value matches the value in comparison register 0 or 1.
Содержание CNT-3208M-PE
Страница 1: ...PC HELPER High Speed Up Down Counter Board for PCI Express CNT 3208M PE User s Guide CONTEC CO LTD ...
Страница 7: ...vi CNT 3208M PE ...
Страница 15: ...1 Before Using the Product 8 CNT 3208M PE ...
Страница 30: ...2 Setup CNT 3208M PE 23 3 Click on the End button to finish condition setting Click on End ...
Страница 35: ...2 Setup 28 CNT 3208M PE ...
Страница 71: ...4 Functions 64 CNT 3208M PE ...
Страница 75: ...5 About Software 68 CNT 3208M PE ...