CNC_RDHPCCTUAC | NCDATA

Specify the library handle. See "Library handle" for details.

Pointer to the IODBHPAC structure for the tuning data(acc./dec. input) for high-speed and high-precision machining. The IODBHPAC structure is as follows.

typedef struct iodbhpac {
    struct {
        short   slct;       /* flag of valid data */
        short   diff;       /* flag of data status */
        short   fine;       /* fine level */
        short   acc_lv;     /* acceleration/deceleration level*/
        long    bipl;       /* acceleration for before IPL */
        short   aipl;       /* time constant for after IPL */
        long    corner;     /* difference of corner feed */
        long    clamp;      /* acceleration for clamp */
        long    c_acc;      /* acceleration of feed clamp by */
                            /*               radius of cercle*/
        long    foward;     /* coefficient of feed forward */
        long    reserve[8]; /* (not used) */
    }tune[3]
} IODBHPAC ;

hpac.tune[0].slct,...,hpac.tune[0].reserve
                                : tuning data for fine level
hpac.tune[1].slct,...,hpac.tune[1].reserve
                                : tuning data for medium level
hpac.tune[2].slct,...,hpac.tune[2].reserve
                                : tuning data for rough level

slct

Flag of valid data is set.

bit 0	:	fine level
bit 1	:	acceleration/deceleration level
bit 2	:	acceleration for before IPL
bit 3	:	time constant for after IPL
bit 4	:	difference of corner feed
bit 5	:	acceleration for clamp
bit 6	:	acceleration of feed clamp by radius of circle
bit 7	:	coefficient of feed forward
bit 8,..,15	:	(not used)

* When a bit is 0, it means the CNC does not have the related option, then the corresponding data has no meaning.

diff

Each bit indicates whether the corresponding data is common for all axes, or not.

bit 0,..,2	:	(not used)
bit 3	:	time constant for after IPL
bit 4	:	difference of corner feed
bit 5	:	acceleration for clamp
bit 6	:	(not used)
bit 7	:	coefficient of feed forward
bit 8,..,15	:	(not used)

* When the bit value is 0, it means the corresponding data is applied commonly to all axes.

fine

Fine level is set.

acc_lv

Acceleration/deceleration level is set.

bipl

Acceleration for before IPL is set.

aipl

Time constant for after IPL is set.

corner

Difference of corner feed is set.

clamp

Acceleration for clamp is set.

c_acc

Acceleration of feed clamp by radius of circle is set.

foward

Coefficient of feed forward is set.

reserve[8]

(not used)