CntSetPulseWidth

Function

Sets the one-shot pulse width. Supports multi-processing.

Format

Ret = CntSetPulseWidth ( Id , ChNo , PlsWidth )

Parameters

Id [ VB.NET: Short ] [ C, C++: short ] [ C#: short ] [ Python: ctypes.c_short ]
Specify the device ID retrieved from CntInit.

ChNo [ VB.NET: Short ] [ C, C++: short ] [ C#: short ] [ Python: ctypes.c_short ]
Specify the channel number for setting.

PlsWidth [ VB.NET: Short ] [ C, C++: short ] [ C#: short ] [ Python: ctypes.c_short ]
Specify the one-shot pulse width with a coefficient.
Select the coefficient from the following table.

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 [ VB.NET: Integer ] [ C, C++: long ] [ C#: int ] [ Python: ctypes.c_long ]

Definition	Value	Description
CNT_ERR_SUCCESS	0	Normality completion
CNT_ERR_SYS_RECOVERED_FROM_STANDBY	7	Execute the function CntResetDevice to return from the standby mode.
CNT_ERR_DLL_INVALID_ID	10001	Invalid ID was specified.
CNT_ERR_DLL_CALL_DRIVER	10002	CNT driver can't be called (Failed in the device I/O control).
CNT_ERR_DLL_MODE	10100	Invalid mode setting.
CNT_ERR_SYS_BOARD_EXECUTING	20002	Cannot use while by another device works.
CNT_ERR_SYS_MODE	20100	Invalid mode setting.
CNT_ERR_SYS_CH_NO	20201	Channel number is out of range.

The others: (See also: Details of Error Code)

Initial Value

Coefficient=0

Remarks

Specifies the one-shot pulse width when count match occurred.
It is possible to change the mode while the counter is working, that is different from other modes.

For the device with sampling function, please use CntSetOutputHardwareEvent.

Specifications based on devices

CNT24-4(PCI)H	PulseWidth is common to all channels. Other words, PulseWidth cannot set the different value for each channel.
CNT24-4D(PCI)H	PulseWidth is common to all channels. Other words, PulseWidth cannot set the different value for each channel.
CNT-3204MT-LPE CNT32-4MT(LPCI)	Not supported Please use CntSetOutputHardwareEvent function instead.
CNT-3208M-PE CNT32-8M(PCI)	Not supported Please use CntSetOutputHardwareEvent function instead.
CNT-3204IN-USB	Not supported Please use CntSetOutputHardwareEvent function instead.
CPS-CNT-3202I CPSN-CNT-3201I	PulseWidth can set the different value for each channel.

Example

Sets the pulse width of channel 0 to about 409.6us.

VB.NET	Dim Ret As Integer Ret = CntSetPulseWidth ( Id , 0 , 1 )
C, C++	long Ret; Ret = CntSetPulseWidth ( Id , 0 , 1 );
C#	int Ret; Ret = cnt.SetPulseWidth ( Id , 0 , 1 );
Python	Ret = ctypes.c_long() Ret.value = ccnt.CntSetPulseWidth ( Id , 0 , 1 )