AioGetAiChannelSequence

Function

Retrieves the channel sequence when the conversion is performed. This function can only be used for the following devices.

AIO-163202G-PE, AIO-163202UG-PE, AIO-123202G-PE, AIO-123202UG-PE, AI-1664UG-PE
ADA16-32/2(PCI)F, AIO-163202F-PE
AD12-16(PCI)EV, AD12-16U(PCI)EV,
AD16-16(PCI)EV, AD16-16U(PCI)EV,
AIO-121601E3-PE, AIO-121601UE3-PE, AIO-161601E3-PE, AIO-161601UE3-PE
AI-1216I2-PCI
AIO-163202FX-USB

Format

Ret = AioGetAiChannelSequence ( Id , AiSequence , AiChannel )

Parameters

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

AiSequence [ C, C++ : short ] [ Python : ctypes.c_short ]
Specifies the conversion sequence of the channel.

0	First conversion channel
1	Second conversion channel
...	...
Maximum number of channels - 1	Last conversion channel

AiChannel [ C, C++ : short * ] [ Python : ctypes.POINTER(ctypes.c_short) ]
Specifies the address of the variable that stores the channel that is retrieved the conversion sequence.

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.
11770	The value of AiChannel is outside the designated range of the function Specify the analog input channel in range: 0 <= AiChannel <= Max channel.
11771	Pointer to Sequence 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.
21770	The value of AiChannel is outside the designated range of the device being used

Initial value

For all devices, the conversion is performed in order of channel0, channel1, channel2 ...

Remarks

If the device is in operation, the function cannot be performed.

Example

Retrieves the channel of the conversion sequence 0.

C, C++	long Ret; short AiChannel; Ret = AioGetAiChannelSequence ( Id , 0 , &AiChannel );
Python	Ret = ctypes.c_long() AiChannel = ctypes.c_short() Ret.value = caio.AioGetAiChannelSequence ( Id , 0 , ctypes.byref(AiChannel) )