AioGetDioDirection

Function

Retrieves I/O direction of digital I/O ports.

Format

Ret = AioGetDioDirection ( Id , Dir )

Parameters

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

Dir [ VB.NET : Integer ] [ C, C++ : long * ] [ C# : out int ] [ Python : ctypes.POINTER(ctypes.c_long) ]
Specifies the address of the variable to store the I/O direction.

Dir	Port1 (DIO08 to DIO15）	Port0 (DIO00 to DIO07)
0x00	Digital Input	Digital Input
0x01	Digital Input	Digital Output
0x02	Digital Output	Digital Input
0x03	Digital Output	Digital Output

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.
14051	Pointer to Dir is NULL.
20001	This function can't be used by this device

Remarks

The set I/O status of each port can be retrieved.

Specifications based on devices

AIO-163202G-PE
AIO-163202UG-PE
AIO-123202G-PE
AIO-123202UG-PE

Initial value is Dir = 0 (Port0 and Port1 are both Input)

※This function cannot be executed if the [E-series settings] jumper on the device is [Use as E-series compatible].

AIO-121602LN-USB
AIO-120802LN-USB

Initial value is Dir = 0 (Port0 and Port1 are both Input)

Devices other than the above

This function cannot be executed.

Example

Retrieves the digital I/O direction being set.

VB.NET	Dim Ret As Integer Dim Dir As Integer Ret = AioGetDioDirection ( Id , Dir )
C, C++	long Ret; long Dir; Ret = AioGetDioDirection ( Id , &Dir );
C#	int Ret; int Dir; Ret = aio.AioGetDioDirection ( Id , out Dir );
Python	Ret = ctypes.c_long() Dir = ctypes.c_long() Ret.value = caio.AioGetDioDirection ( Id , ctypes.byref(Dir) )