DioReadCount

Function

Retrieves the count values.

Format

Ret = DioReadCount ( Id , ChNo , ChNum , Count)

Parameters

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

ChNo [C:short *] [Python: ctypes.POINTER(ctypes.c_short)]
Specifies the start address of the array that stores the channel numbers for which count values are to be acquired.

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

Count[C:unsigned int *] [Python: ctypes.POINTER(ctypes.c_uint)]
Specifies the start address of the array that stores the count values.

Return Value

Ret [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

Retrieves the count values of the specified channels.

In the case of a wireless I/O device, it acquires the data of the slave unit stored in the master unit.
Please note that it is not real time information of the slave unit.
Please use the DioReadCountSR function when acquiring the real time information of the slave unit.

Example

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