CntSetPulseWidth

Function

Sets one-shot pulse width.

Format

Ret = CntSetPulseWidth ( Id , ChNo , PlsWidth )

Parameters

Id [C: short] [Python: ctypes.c_short]
Specifies the device ID retrieved from CntInit.

ChNo [C: short] [Python: ctypes.c_short]
Specifies the channel number which you want to set.
In CNT24-4(PCI)H, CNT24-4D(PCI)H, all of channels are set with the same pulse width.

PlsWidth [C: short] [Python: ctypes.c_short]
Specifies the one-shot pulse width by coefficient.

Coefficient	Pulse Width
0h	0
1h	Approx. 409.6us
2h	Approx. 819.2us
3h	Approx. 1.23ms
4h	Approx. 4.92ms
5h	Approx. 10.24ms
6h	Approx. 20.07ms
7h	Approx. 29.9ms
8h	Approx. 40.14ms
9h	Approx. 49.97ms
Ah	Approx. 60.2ms
Bh	Approx. 70.04ms
Ch	Approx. 80.28ms
Dh	Approx. 90.11ms
Eh	Approx. 100.35ms
Fh	Approx. 104.45ms

Return Value

Ret [C: long] [Python: ctypes.c_long]

Definition	Value	Description
CNT_ERR_SUCCESS	0	Normal Complete
CNT_ERR_DLL_INVALID_ID	10001	Invalid ID is specified.
CNT_ERR_DLL_CALL_DRIVER	10002	Driver cannot be called (failed in ioctl).
CNT_ERR_DLL_MODE	10100	Invalid mode setting.
CNT_ERR_SYS_MODE	20100	Invalid mode setting.
CNT_ERR_SYS_CH_NO	20201	Channel number is outside the range.

The other errors: (See also: Details of Error Code)

Initial Value

Coefficient=0

Remarks

Specifies the one-shot pulse width. The one-shot pulse will be output to the channel when the count value of the channel matches the value to compare against.
This setting is different from other mode settings, the mode can be changed while the counter is running.

For "Device with high-performance counter", please use CntSetOutputHardwareEvent.

Example

C	Ret = CntSetPulseWidth(Id, ChNo, PlsWidth);
Python	Ret = ccnt.CntSetPulseWidth(Id, ChNo, PlsWidth)