CNC_RDHISSGNL2 | HISTORY

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

Pointer to the IODBSIG2 structure in which the operation history signal is stored. The IODBSIG2 structure is as follows.

typedef struct iodbsig2 {
    short      datano;   /* Not used */
    short      type;     /* Number of signals */
    struct {
        short   ent_no;   /* Registration sequence number   */
        short   sig_no;   /* Registered signal number       */
        char    sig_name; /* Registered signal name         */
        char    mask_pat; /* Signal mask pattern            */
    } data[45];
} IODBSIG2 ;

type

Number of signals can be registration

• Series 16i/18i/21i MODEL B, when the extended operation history function exists

45 is returned. Whole of data[0]~data[44] are effective.

• Other cases

20 is returned. Only data[0]~data[19] are effective.

ent_no

Registration sequence number (from 1 to value of the type)

sig_no

Number of a registered signal

• Series 16i/18i/21i MODEL B, when the extended operation history function exists (the type equals to 45)

X	:	0~127 or 200~327 or 1000~1063
G	:	0~511 or 1000~1511 or 2000~2511
Y	:	0~127 or 200~327 or 1000~1063
F	:	0~511 or 1000~1511 or 2000~2511

• Other cases (the type equals to 20)

X	:	0~127 or 1000~1063
G	:	0~255 or 1000~1255 or 2000~2255
Y	:	0~127 or 1000~1063
F	:	0~255 or 1000~1255 or 2000~2255

sig_name

Name of a registered signal

0	:	Not registered
1	:	X
2	:	G
3	:	Y
4	:	F

mask_pat

Signal mask pattern