AioGetAiTransferLap

Function

Retrieves the number of overwrite if the user buffer is used in "Overwrite the memory".
This function can only be used when the transfer mode of the conversion data that is set by AioSetAiTransferMode is User buffer mode.
It cannot be used when the transfer mode of the conversion data is Device buffer mode.

Format

Ret = AioGetAiTransferLap ( ID , Lap )

Parameters

Id [ VB.NET : Short ] [ C, C++ : short ] [ C# : short ] [ Python : ctypes.c_short ]
Specifies the ID retrieved from AioInit function.

Lap [ VB.NET : Integer ] [ C, C++ : long * ] [ C# : out int ] [ Python : ctypes.POINTER(ctypes.c_long) ]
Specifies the address of the variable that stores the number of lap.

Return value

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

Return values	Content
0	Normality completion
7	Execute AioResetDevice function because the device has recovered from standby mode
10001	Invalid Id was specified Use the Id retrieved from AioInit to specify the Id in this function.
10002	AIO driver can't be called At first, perform AioInit function.
12160	Pointer to Lap is NULL Specify the address of variable to parameter.
20001	This function can't be used by this device
20003	Can not use because another process is using the device When another process is using the device, all functions except for those that support multi-process can not be performed.

Initial value

In all devices, Lap = 0

Remarks

Lap is automatically reset to 0 when the conversion is started by AioStartAi.

This function can be executed if the device is working.
This function cannot be used on devices without the analog input function.

Specifications based on devices

AI-1204Z-PE
AI-1204Z-PCI

For optimization, data is transferred to the PC side every 128-512 samplings.
Therefore, there is such a possibility that the count doesn't work when the clocks input, but the sampling is performed.
When the transfer is completed, the rest of the data will also be transferred.

Example

Retrieves the number of overwrite.

VB.NET	Dim Ret As Integer Dim Lap As Integer Ret = AioGetAiTransferLap ( Id , Lap )
C, C++	long Ret; long Lap; Ret = AioGetAiTransferLap ( Id , &Lap );
C#	int Ret; int Lap; Ret = aio.GetAiTransferLap ( Id , out Lap );
Python	Ret = ctypes.c_long() Lap = ctypes.c_long() Ret.value = caio.AioGetAiTransferLap ( Id , ctypes.byref(Lap) )