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2. 5.2 S 4-DIGIT PROGRAMMING A+(Cont’d)
(3) S
commands are modal. Although the spin-
dle stops at the M05 command, the S com-
mand is retained.
Therefore, when M03
(or M04) is given, the spindle runs accord-
ing to the S command.
(4) When S command is changed after the spin-
dle start by M03 or M04, S command should
be given within the range of spindle speed
selected by spindle gear.
Notes :
1.
2.
3.
4.
The lower limit of the spindle speed depends
on the spindle drive. Refer to the machir,e
tool builder’s manual for the low-speed limit.
Negative S commands must not be programmed.
When the control is provided with the S 4-
digit command function, the “Spindle speed
override” option can be built into it.
With machine tools with which the main spin-
dle gear ratio changes can be specified by
M codes, first write the applicable M code
to preselect the desired gear ratio, and then,
write the S command.
Refer to the data of
the machine tool builder for the number of
gear ratios, the speeds at various gear ratios,
and other details.
When the control is provided with this func -
tion, the spindle maximum speed commanding
function with the instruction “G50 S . . . ; “
can be used.
2. 5.3 S 4-DIGIT
PROGRAMMING B+
(1)
This function is to modify the S4-digit com-
mand A output freely through the program-
mable machine interface.
(2) Basically, this function is used in the same
way
as the S 4-digit command A function,
but it is normally used to set the manually
controlled spindle speeds controlled by the
rotary switch on the m“achine control station
corresponding to S command speeds. For
the details of S command speeds, refer to
the machine tool builder’s manual.
2.6
TOOL FUNCTiON (T-FUNCTION)
2.6.1 T 4-DIGIT PROGRAMMING
(1)
Four digits following the address T specifies
the tool number.
TDDDU
1
Tool offset number
(O - 160r 50)
Tool selection
(2) For applicable tool number to be specified,
refer to the machine tool builder’s manual .
Notes :
1. When the tool number is changed by the T
command, a turret lathe begins to index the
tool instantaneously.
Therefore, the turret
should be removed, before the command,
from the area where” an accidental collision
might occur.
2.
Tool offset number 00 cancels the tool offset.
2.6.2 TOOL OFFSET MEMORY+
The area in which tool position offset values, tool
radius compensation values, and other compensa-
tion data are stored is called Offset Memory .
(1) The entire memory areas of Offset Memory
including the options are as shown below.
[
OFFSET MEMORY NO
‘TOOL OFFSET
‘I&/
,50 GROUP5MA: f ‘---’”--- ‘--- ~:~i;:;
MEMORY
---
Ii –_-–
I ;0
-MEMORY
J SUPPLEMENT
“TOOL COORDINATE
1
51
MEMORY — \
(49 GROUPS MAXI ‘g
“TOOL RADIUS
MEMORY
-r-
Note :
For the actually usable range within the
above Offset Memory,
refer to the machine tool
builder’s manual.
(2)
The “tool offset Nos. “
specified by the T
function directly correspond to the “offset
memory Nos. , “
and their contents are used
for various compensations.
However, the
tool coordinate memory Nos. ( for setting the
work coordinate system) correspond to the
tool selection Nos . in the T function . The
work coordinate shift memory is an independ-
ent function, not related to the T function. )
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