DioEchoBackMultiByte

Function

Retrieves the status of multiple output ports.

Format

Ret = DioEchoBackMultiByte ( Id , &PortNo[0] , PortNum , &Data[0] )

Parameters

Id [C:short] [Python: ctypes.c_short]
Specifies the device ID retrieved from DioInit.

PortNo [C:short *] [Python: ctypes.POINTER(ctypes.c_short)]
Stores the logical output port numbers into a array. Specifies the base address of this array.

PortNum [C:short] [Python: ctypes.c_short]
Specifies the number of ports which are specified by PortNo. The maximum number of ports is 256.

Data [C:unsigned char *] [Python: ctypes.POINTER(ctypes.c_ubyte)]
Specifies the base address of the array to store the output data. The output data are returned in hex number from 0H to FFH.

Return Value

Ret[C:long] [Python: ctypes.c_long]

Definition	Value [Dec]	Description
DIO_ERR_SUCCESS	0	Normal complete
DIO_ERR_DLL_INVALID_ID	10001	Invalid ID is specified.
DIO_ERR_DLL_CALL_DRIVER	10002	Driver cannot be called (failed in ioctl).
DIO_ERR_DLL_BUFF_ADDRESS	10100	Invalid data buffer address.
DIO_ERR_SYS_NOT_SUPPORTED	20001	This function cannot be used for this device.
DIO_ERR_SYS_PORT_NO	20100	Port number is outside of the available range.
DIO_ERR_SYS_PORT_NUM	20101	Number of ports is outside of the available range.

The other errors: (See also: Error code details)

Initial Value

The initial value of the output data is 0, after the device was reset.

Remarks

Retrieves the status of multiple output ports. Before this function is called, it is necessary that the logical output ports to be input numbers are set into the array specified by PortNo.
The data are stored in the array Data in the order that the logical ports are specified by PortNo.

The output data are returned in hex number from 0H to FFH.
This function is used for monitoring the outputting contents.

Example

C	Ret = DioEchoBackMultiByte( Id , &PortNo[0] , PortNum , &Data[0] )
Python	Ret = cdio.DioEchoBackMultiByte( Id , PortNo , PortNum , Data )