MPIMapSymbol

Declaration

typedef struct MPIMapSymbol
{
    MPIMapSymbolType type;
    int32_t             index[MPIMapSymbolMAX_INDICES];
} MPIMapSymbol;

Required Header: map.h

Change History: Added in 04.00.

Description

MPIMapSymbol is a structure that represents commonly referenced memory locations on the controller in a version independent manner.

type	The type of controller memory.
index	Additional indices for determining the specific controller memory location. For more information, see MPIMapSymbolType.

Sample Code

MPIMap       mpiMap;
MPIMapSymbol data;
MPIMapPtr    info;
MPI_RESULT   returnValue;


/* ... */


/* Obtain information about axis 3's actual position. */
data.location = MPIMapSymbolTypeACTUAL_POSITION;
data.index[0] = 3;


returnValue = mpiMapSymbolToPtr(mpiMap, &data, &info);


/* info.dataType holds axis 3's data type. */


/* info.ptr      holds a host pointer to axis 3's memory on the controller */
/* info.ptr.v    may be used to configure a data recorder trace */


/* info.mask     should be 0xFFFFFFFFFFFFFFFF (as actual positions are not bitmasks) */
/*               info.mask will only have one bit set for digital i/o though, and    */
/*               info.mask will likely only have 16 bits set for analog i/o.         */

MPIMapSymbol

Declaration

Description

Sample Code

See Also