AioSetAiMemorySize

Function

Sets the memory byte size for storing data. This function is used by Z-series only.

Format

Ret = AioSetAiMemorySize ( 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.c_long ]
Specifies 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.
11820	The value of AiMemorySize is outside the designated range of the function
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

AiMemorySize = 1024*1024(1M Byte)

Remarks

This function cannot be used on devices without the analog input function.
If the device is in operation, the function cannot be performed.
This function is used by Z-series only.

Specifications based on devices

AI-1204Z-PE

Usable AiMemorySize is 0 to 2147483648(2GByte).

Example

The memory size is set to 256*1024 byte.

C, C++	long Ret; Ret = AioSetAiMemorySize ( Id , 256*1024);
Python	Ret = ctypes.c_long() Ret.value = caio.AioSetAiMemorySize ( Id , 256*1024)