CNC_RDVOLC | NCDATA

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

Pointer to the ODBTOFS structure including the reading information of 3-dimensional error compensation data. The ODBVOLC structure is as follows.

typedef struct odbvolc {
    long   start_no ;  /* Reading start compensation number */
    long   start_ax ;  /* Reading start axis index */
    long   end_no ;    /* Reading end compensation number */
    long   end_ax ;    /* Reading end axis index */
    long   num ;       /* Reading number */
    char   type ;      /* 0:Read by number  1:Read by end number specification */
    long   data[72] ;  /* Reserved */
} ODBVOLC ;

start_no

Specify the compensation number which the reading start.
The range is 1-15625.

start_ax

Specify the axis index number which the reading start.
The range is 1-3.

end_no

Specify the compensation number which the reading end. This argument is effective at type=1.
The range is 1-15625.

end_ax

Specify the axis index number which the reading end. This argument is effective at type=1.
The range is 1-3.

num

Specify the reading number. This argument is effective at type=0.
The range is 1-78.

type

Specify the reading method type.

0	:	Read by number(Specify the "num")
1	:	Read by end number specification(Specify the "end_no","end_ax")

When type=1 is specified for the reading method type, specify the other argument to become the following.

1 <= ((end_no - start_no) * 3 + (end_ax - start_ax) + 1) <= 78

Pointer to the area to store the 3-dimensional error compensation data. The number of maximum data which can read is 78.

(Maximum size is data[78].)

Data is stored in order of the 1st axis, 2nd axis and the 3rd axis from the little number.

For example, when the data from the 3rd axis in No.5 to the 1st axis in No.8 is acquired by the end number specification, the acquired data becomes as follows.

ODBVOLC volc ;

long data[78] ;

volc.start_no = 5

volc.start_ax = 3

volc.end_no = 8

volc.end_ax = 1

volc.type = 1

The 3-dimensional error compensation data is stored as follows.

data[0] 3-dimensional error compensation data of 3rd axis in No.5.

data[1] 3-dimensional error compensation data of 1st axis in No.6.

data[2] 3-dimensional error compensation data of 2nd axis in No.6.

data[3] 3-dimensional error compensation data of 3rd axis in No.6.

data[4] 3-dimensional error compensation data of 1st axis in No.7.

data[5] 3-dimensional error compensation data of 2nd axis in No.7.

data[6] 3-dimensional error compensation data of 3rd axis in No.7.

data[7] 3-dimensional error compensation data of 1st axis in No.8.