Function
Retrieves the counter operation as the comparison count match occurred.
Format
Ret = AioGetCntComparisonMode ( Id , CntChannel , CntMode )
Parameters
Id
[ C, C++ : short ] [ Python : ctypes.c_short ]
Specifies the ID retrieved from AioInit.
CntChannel
[ C, C++ : short ] [ Python : ctypes.c_short ]
Sets the channel of counter.
CntMode
[ C, C++ : short * ] [ Python : ctypes.POINTER(ctypes.c_short) ]
Specifies the address of the variable that stores the operation mode.
CntMode has the following meanings in bit.
Operation mode |
Macro |
Value |
Preset count value load |
CNT_LOADPRESET |
00000001H |
Comparison count value load |
CNT_LOADCOMP |
00000002H |
Return values
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 |
15010 |
The value of CntChannel is outside the designated range of the function |
15011 |
Pointer
to CntMode is NULL |
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 |
25010 |
The value of CntChannel is outside the designated range of the device being used |
Initial values
CntMode = 0
Remarks
This function cannot be used on devices without
counter functionality.
If the device is in operation, the function cannot be performed.
Example
Retrieves the counter operation for channel 0.
C, C++ |
long
Ret; |
Python |
Ret
= ctypes.c_long() |
See also