CntPreset

Function

Presets the count value of specified channel. Supports multi-processing.

Format

Ret = CntPreset ( Id , ChNo , ChNum , PresetData )

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#: out short ] [ Python: ctypes.POINTER(ctypes.c_short) ]
Specify the base address of array storing channel number.

ChNum [ VB.NET: Short ] [ C, C++: short ] [ C#: short ] [ Python: ctypes.c_short ]
Specify the number of channels in array ChNo.

PresetData [ VB.NET: Integer ] [ C, C++: unsigned long * ] [ C#: out uint ] [ Python: ctypes.POINTER(ctypes.c_ulong) ]
Specify the base address of array storing the preset data value.

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_BUFF_ADDRESS	10101	Invalid data buffer address.
CNT_ERR_SYS_CH_NO	20201	Channel number is out of range.
CNT_ERR_SYS_CH_NUM	20202	Number of channels is out of range.
CNT_ERR_SYS_CH_VALUE	20203	Counter value is out of range.

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

Initial Value

None

Remarks

Sets the count value of specified channel. The channel number is put in the array and passed. The preset value is put in the array and passed. Store corresponding preset value in the array in the order of storing the channel number in the array.

For the device without sampling function, the value that was preset before the count operation starts is set, when the count starts.

Example

Presets the count value of channel 0 to 0, channel 1 to 10000.

VB.NET	Dim Ret As Integer Dim ChNo(1) As Short ChNo(0) = 0 ChNo(1) = 1 Dim PresetData(1) As Integer PresetData(0) = 0 PresetData(1) = 10000 Ret = CntPreset( Id , ChNo , 2 , PresetData )
C, C++	long Ret; short ChNo[2]; ChNo[0] = 0; ChNo[1] = 1; unsigned long PresetData[2]; PresetData[0] = 0; PresetData[1] = 10000; Ret = CntPreset( Id , ChNo , 2 , PresetData );
C#	int Ret; short[] ChNo = new short[2]; ChNo[0] = 0; ChNo[1] = 1; uint[] PresetData = new uint[2]; PresetData[0] = 0; PresetData[1] = 10000; Ret = cnt.Preset( Id , out ChNo , 2 , out PresetData );
Python	Ret = ctypes.c_long() ChNoType = ctypes.c_short * 2 ChNo = ChNoType() ChNo[0] = 0 ChNo[1] = 1 PresetDataType = ctypes.c_ulong * 2 PresetData = PresetDataType() PresetData[0] = 0 PresetData[1] = 10000 Ret.value = ccnt.CntPreset( Id , ChNo , 2 , PresetData )