AioGetCntFilter

Function

Retrieves the filter time set based on counter input signal.

Format

Ret = AioGetCntFilter ( Id , CntChannel, Signal , Value )

Parameters

Id [ VB.NET : Short ] [ C, C++ : short ] [ C# : short ] [ Python : ctypes.c_short ]
Specifies the device ID retrieved from AioInit.

CntChannel [ VB.NET : Short ] [ C, C++ : short ] [ C# : short ] [ Python : ctypes.c_short ]
Sets the channel of counter. Only -1 can be set now.

Signal [ VB.NET : Short ] [ C, C++ : short ] [ C# : short ] [ Python : ctypes.c_short ]
Specifies the input signal for setting filter.
Only -1 can be set now.

Input signal	Value
External UP clock	0 (Reserved)
All signals above	-1

Value [ VB.NET : Single ] [ C, C++ : float * ] [ C# : out float ] [ Python : ctypes.POINTER(ctypes.c_float) ]
Specifies the address of the variable that stores the filter time. The unit is usec.
0 means no filter.

Return value

Ret [ VB.NET : Integer ] [ C, C++ : long ] [ C# : int ] [ 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.
15130	The value of CntChannel is outside the designated range of the function
15131	The value of Signal is outside the designated range of the function
15132	Pointer to Value 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, counter 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.
25130	The value of CntChannel is outside the designated range of the device being used
25131	The value of Signal is outside the designated range of the device being used

Initial value

For all signal lines, filter is disabled

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 filter values set for all channels.

VB.NET	Dim Ret As Integer Dim Value As Single Ret = AioGetCntFilter ( Id , -1 , -1 , Value )
C, C++	long Ret; float Value; Ret = AioGetCntFilter ( Id , -1 , -1 , &Value );
C#	int Ret; float Value; Ret = aio.GetCntFilter ( Id , -1 , -1 , out Value );
Python	Ret = ctypes.c_long() Value = ctypes.c_float() Ret.value = caio.AioGetCntFilter ( Id , -1 , -1 , ctypes.byref(Value) )