Function
Retrieves the current count value.
Format
Ret = AioGetCntCount ( Id , CntChannel , Count )
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 counter channel.
Count [ C, C++ : long * ] [ Python : ctypes.POINTER(ctypes.c_long) ]
Specifies the address of the variable that stores the current count value.
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 |
15220 |
The value of CntChannel is outside the designated range of the function |
15221 |
Pointer to Count is NULL |
20001 |
This function can't be used by this device |
20003 |
Can not use because another process is using the device |
25220 |
The value of CntChannel is outside the designated range of the device being used |
Initial values
Count = 0
Remarks
This function cannot be used on devices without counter functionality.
Even if the device is in operation, the function can be performed.
Example
Retrieves the current count value for channel 0.
C, C++ |
long Ret; |
Python |
Ret = ctypes.c_long() |
See also