Reads the sampling data of specified times
from the device memory (software memory). The converted data are stored
in Voltage or Current.
This function can only be used when the transfer mode of the conversion
data that is set by AioSetAiTransferMode is Device buffer mode.
It cannot be used when the transfer mode of the conversion data is User
buffer mode.
Ret = AioGetAiSamplingDataEx ( Id , AiSamplingTimes , AiData )
Id
[ VB.NET : Short ] [ C, C++ : short ] [ C# : short ] [ Python : ctypes.c_short
]
Specifies the ID retrieved from AioInit function.
AiSamplingTimes
[ VB.NET : Integer ] [ C, C++ : long * ] [ C# : ref int ] [ Python : ctypes.POINTER(ctypes.c_long)
]
Specifies the address of variable which has stored the sampling times of
acquiring
data.
After this function is executed, return the actual number of samplings
which has been read.
AiData
[ VB.NET : Single() ] [ C, C++ : float * ] [ C# : ref float[] ] [ Python
: ctypes.POINTER(ctypes.c_float) ]
Specifies the address of array which stores the converted data. The converted
data are stored in Voltage or Current.
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 |
10002 |
AIO
driver can't be called |
11880 |
Pointer
to AiSamplingTimes is NULL |
11881 |
Pointer
to AiData is NULL |
20001 |
This function can't be used by this device |
20003 |
Can
not use because another process is using the device |
21880 |
The value of AiChannels is outside the designated range of the device being used |
21881 |
It
tried to acquire data beyond the converted number |
21885 |
FIFO is empty |
21886 |
It tried to acquire data beyond the memory size. AiSamplingTimes is changed to the maximum value |
In AioStartAi, the used data are stored by
each channel.
This function cannot be used on devices without the analog input function.
•In
FIFO memory
Usually the old data is read in.
The data that has ever been read cannot be reread.
It can be used if the device is in operation.
•In
RING memory
Retrieves the data of the specified sampling number from the latest data.
The same data can be repeated retrieved.
It can't be used if the device is in operation.
Reads the sampling data of 1000 times.
VB.NET |
Dim
Ret As Integer |
C, C++ |
long
Ret; |
C# |
int
Ret; |
Python |
Ret
= ctypes.c_long() |