AioGetAiMemorySize

Function

Retrieves the memory size for storing data.

Format

Ret = AioGetAiMemorySize ( Id , AiMemorySize )

Parameters

Id [ C, C++ : short ] [ Python : ctypes.c_short ]
Specifies the Device ID retrieved from AioInit function.

AiMemorySize [ C, C++： long * ] [ Python： ctypes.POINTER(ctypes.c_long) ]
Specifies the address of the variable that stores the memory byte size for storing data.

Return value

Ret [ C, C++ : long ] [ 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.
11830	Pointer to AiMemorySize is NULL Specify the address of variable to parameter.
20001	This function can't be used by this device
20002	Can not use while by another device works To use this function, analog input operation must be stopped.
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.
21820	Can not configure Memory size.

Initial value

For Z-Series, the initial value is 1M (1024 * 1024).
For other devices, please refer to the glossary "Driver Memory".

Remarks

The unit of memory size that can be acquired is as follows.
For Z-Series : Byte unit
For other than Z-Series : Data unit

This function cannot be used on devices without the analog input function.
If the device is in operation, the function cannot be performed.

Example

Retrieves the memory size for storing data.

C, C++	long Ret; long AiMemorySize; Ret = AioGetAiMemorySize ( Id , &AiMemorySize );
Python	Ret = ctypes.c_long() AiMemorySize = ctypes.c_long() Ret.value = caio.AioGetAiMemorySize ( Id , ctypes.byref(AiMemorySize) )