DioCountPreset

Function

Presets the count values.

Format

Ret = DioCountPreset ( Id , ChNo , ChNum , PresetCount )

Parameters

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

ChNo [ C, C++: short *] [Python: ctypes.POINTER(ctypes.c_short)]
Specifies the start address of the array that stores the channel numbers to be set.

ChNum [ C, C++: short] [Python: ctypes.c_short]
Specifies the number of channels specified in ChNo.

PresetCount [ C, C++: unsigned int *] [Python: ctypes.POINTER(ctypes.c_uint)]
Specifies the start address of the array that stores the preset values.

Specifiable range :
For 32-bit counter devices : 0h <= Count <= FFFFFFFFh

Return Value

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

Definition	Value [Dec]	Description
DIO_ERR_SUCCESS	0	Normal complete
DIO_ERR_DLL_INVALID_ID	10001	Invalid ID is specified.
DIO_ERR_DLL_CALL_DRIVER	10002	Driver cannot be called (failed in ioctl).
DIO_ERR_DLL_BUFF_ADDRESS	10100	Invalid data buffer address.
DIO_ERR_SYS_NOT_SUPPORTED	20001	This function cannot be used for this device.
DIO_ERR_SYS_CH_NO	20105	Channel No. is outside the setting range.
DIO_ERR_SYS_CH_NUM	20106	Channel number is outside the setting range.
DIO_ERR_SYS_COUNT_VAL	20810	Count value is outside the setting range.

The other errors: (See also: Error code details)

Remarks

- Presets the count values of the specified channels.

Example

It presets the count value=500 on Channl0.
And also, it presets the count value=1000 on Channel1.

C, C++

long Ret;

short ChNo[2]
unsigned long PresetCount[2];

ChNo[0] = 0;
ChNo[1] = 1;
PresetCount[0] = 500;
PresetCount[1] = 1000;

Ret = DioCountPreset(Id, &ChNo[0], 2, &PresetCount[0]);

Python

Ret = ctypes.c_long()

ChNoType = ctypes.c_short * 2
ChNo = ChNoType()
PresetCountType = ctypes.c_short * 2
PresetCount = PresetCountType()

ChNo[0] = 0
ChNo[1] = 1
PresetCount[0] = 500
PresetCount[1] = 1000

Ret.value = cdio.DioCountPreset(Id, ChNo, 2, PresetCount)