Yaskawa J50M Instructions User Manual

Page 44

2.9.17 RETURN TO 2ND, 3RD AND 4TH REFERENCE
POINT (G30) (Cent’d)

EXAMPLE

G30 P2 x30. Y50. : The tool returns to the 2nd

reference point moving in
the X and Y directions.

(30. ,50.)

CURRENT

I N T E R I M

‘

—

– -

POINT

= a,

VALUE

y = b )

REFERENCE

POINT

O z

2ND REFERENCE POINT

SHIFT AMOUNT

G92 COORDINATE SYSTEM

(o, o)

(a) First, positioning

30. Y= 50.). The interim point

coordinate value

of the G92 coordinate system or work coordinate
system (G54 to

(b) Then positioning is executed at the second
reference point as follows :

2nd reference point position

= X-axis machine reference point + (#6612)

Y-axis 2nd reference point position

= Y-axis machine reference point + (#6613)

In the above example, when ;

X-axis machine reference point = O,

Y-axis machine reference point = O,

#6612 = 10.000 and

#661 3 = 20.000 in the G92 coordinate system, the
machine moves to the following positions by rapid
traverse.

X-axis 2nd reference point position

= X-axis machine reference point + (#6612)
= o + 10.000 = 10.000

Y-axis 2nd reference point position

= Y-axis machine reference point + (#6613)
=

o +

20.000 = 20.000

reference point.

Notes :

Three items except the last one in NOTES of 2.9.15
AUTOMATIC RETURN TO REFERENCE POINT

When G29 is commanded after G30, the tool
moves to the designated point

G29 by way

of interim positioning point designated by G 30.
However the interim positioning point is renew-
ed on the axis designated by G 30.

2.9.18

SKIP FUNCTION

G31

. Y.. . Z.. . (a t...) F...

With this command, a special linear interpolation
is commanded.

During the interpolation movement

under the command of this program, whenever a
skip signal is inputted, the interpolation is inter-

rupted immediately, and the program advances
to the next block.

From the moment that a skip

signal is inputted to the time the control start
to process the signal, delay time is less than
0.5m sec.

G31 is non-modal.

EXAMPLE

N1OO G90 G31 X1OO.

Y50.

N200 GO1 x80.

;

SKIP SIGNAL

INPUT HERE

I S

5a)

Fig. 2.31

When

block is executed without a skip signal

being inputted, the machine stops at the end of

the block, and the alarm code “087” is displayed.

Feedrate of the tool is set for G 31 blocks selec-
tively by one of the following two methods as
specified by parameter

be specified by F similar to ordinary pro-

grams.

To be set in advance by parameter #6232.

When a skip signal is inputted, the coordinate
values at the moment are automatically stored as
parameter data.

#6552 . .

storing X coordinate value

#6553

storing

coordinate value

#6554 . . .

storing Z coordinate value

#6555 . . .

storing 4th coordinate value

on page 33, apply to G30 in the same manner.