AioMultiAo

Function

DA Converts the more than one channel one time, the conversion data are specified in binary value. This function supports multi-process.

Format

Ret = AioMultiAo ( Id , AoChannels , AoData )

Parameters

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

AoChannels [ C, C++ : short ] [ Python : ctypes.c_short ]
Specifies the number of channels to be converted.

AoData [ C, C++ : long * ] [ Python : ctypes.POINTER(ctypes.c_long) ]
Specifies the address of the array that stores the output data. Please specify the data in binary value.
The available value differs by the device.

Resolution of device is 12 bit	0 to 4095
Resolution of device is 16 bit	0 to 65535

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.
13020	The value of AoChannels is outside the designated range of the function Specify the number of analog output channels in range: 1 <= AoChannels <= Max number of channels.
13021	Pointer to AoData 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 output operation must be stopped.
23021	The number of conversion channels was exceeded. It is converted on the maximum channels
23022	Specify data to establish in AoData in the range of 0 to 4095
23023	Specify data to establish in AoData in the range of 0 to 65535

Remarks

If a device has the synchronous output function, it outputs the set channels at the same time.
If the device have no the synchronous output function, it transparently (one after another output) outputs to the channels in the order of channel 0, 1, 2 and so on.

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

When you use this function and "continuous functions", please refer "How to use simple functions and continuous functions at the same time" topics.

Example

It outputs binary data 2048 to channel 0 to channel 7.

C, C++	long Ret; long AoData[8]; short i; for( i = 0 ; i < 8 ; i++ ){ AoData[i] = 2048; } Ret = AioMultiAo ( Id , 8 , &AoData[0] );
Python	Ret = ctypes.c_long() AoDataType = ctypes.c_long * 8 AoData = AoDataType() for i in range(8): AoData[i] = 2048 Ret.value = caio.AioMultiAo ( Id , 8 , AoData )