CNC_WRHPCCTUAC | 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;       /* (not used) */
        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 circle*/
        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 selection must be 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)

* In order to write the data to CNC, turn on the corresponding bit on this data.

diff

(not used)

fine

Specify fine level.

acc_lv

Specify acceleration/deceleration level.

bipl

Specify acceleration for before IPL.

aipl

Specify time constant for after IPL.

corner

Specify difference of corner feed.

clamp

Specify acceleration for clamp.

c_acc

Specify acceleration of feed clamp by radius of circle.

foward

Specify coefficient of feed forward.

reserve[8]

(not used)