DioStartCount

Function

Starts the count operation.

Format

Ret = DioStartCount ( Id , ChNo , ChNum )

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 number to start counting.

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

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.

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

Remarks

- Starts the count of the specified channels.

Example

C, C++	Ret = DioStartCount( Id , &ChNo[0] , ChNum );
Python	Ret = cdio.DioStartCount( Id , ChNo , ChNum )