Function
Start AD conversion based on the condition settings.
Format
Ret = AioStartAi ( Id )
Parameters
Id
[ C, C++ : short ] [ Python : ctypes.c_short ]
Specifies the Device ID retrieved from AioInit function.
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 |
10002 |
AIO
driver can't be called |
20001 |
This function can't be used by this device |
20002 |
Can
not use while by another device works |
20003 |
Can
not use because another process is using the device |
21460 |
Because sampling clock period error occurs, you must reset a device |
21461 |
Virtual
memory can't be allocated |
21463 |
In the software start, set up the repeat number in 1 |
21466 |
A user buffer isn't set up |
21469 |
Buffer overflow error occurred, you must reset a memory |
Remarks
When this function is executed, AD conversion
is started based on the set condition.
The sampling clock period error and AD conversion error are automatically
reset.
If Device buffer is used, the memory in the device are not reset. If the older conversion data exists in the memory, the latest conversion data are stored after the older data.
If User buffer is used, the conversion data are stored from the head of buffer whose memory is reset when perform this function.
This function cannot be used on devices without
the analog input function.
This function can be executed if the device is in operation.
Internal clock specified by function AioSetAiClockType:
Sampling is started since executing this function.
External clock specified by function AioSetAiClockType:
Sampling is started at the timing of the external clock input since executing
this function.
Example
Start AD conversion.
C, C++ |
long
Ret; |
Python |
Ret
= ctypes.c_long() |
See also
AioStopAi AioSingleAi AioMultiAi