typedef enum {
    MPIIdnDataTypeINVALID,
	/*
	 * These data types correspond to the
	 * SERCOS attribute TYPE field.
	 * They should not be changed,
	 * though new types may be appended
	 */

    MPIIdnDataTypeBINARY,	/* 0x0 */	
    MPIIdnDataTypeUNSIGNED,	/* 0x1 */	
    MPIIdnDataTypeLONG,		/* 0x2 */	
    MPIIdnDataTypeUNSIGNED_HEX,	/* 0x4 */
    MPIIdnDataTypeTEXT,		/* 0x5 */
    MPIIdnDataTypeIDN,		/* 0x6 */

} MPIIdnDataType;