Yaskawa J50M Instructions - Manual (Page 141)

3.2.3 CAUTIONS IN PROGRAMMING
One block ends with an code.
The EOB code is CR in EIA, and LF/NL in 1S0.
However, in the example programs in this man-
ual, “;” is used to represent EOB codes to
make recognition easy.
One part program ends with a block containing
M02 (end of program) or M30 (end of tape) .
When an M02 or M30 code is read , the NC re-
sets itself or rewind the tape (or the memory) ,
depending on the design of the machine
control.
For this, refer to the manual prepared
by the machine tool builder.
not use any characters other than the ad-
dress characters and the function code char-
acters specified in 2. 1.2 ADDRESS AND FUNC-
TION CHARACTERS .
The maximum number of characters that can be
written in a block is 128, the parameter can also
be switched to allow setting of a maximum of 256
characters, but not counting disregard
characters such as BS, Tab, SP, UC, LC and
Del.
3.3.3 NC TAPE CHECK
Punched part program tapes can be checked by
an NC with the following functions.
. Machine lock
. M function lock
. Dry run
. Single block operation
3.4 PART PROGRAM TAPE HANDLING
3.4.1 SPLICING NC TAPE
To join part program tapes, the two ends should
be placed end to end without overlapping and
without a space, and a proper length of splice
tape should be pasted on one side.
O. 08 mm in thickness) Tape splices are available
in the fully perforated type and in the type with
which only the feed holes are punched, but the
former is more convenient. After splicing, the
tape should be checked for correct alignment of
the feed holes before use.
Do not use rigid in-
dustrial adhesive, and do not make the joint too
thick, as these conditions are conductive to jam-
ming troubles.
; NO058 G03 X.. . Z.. . .
1-
128 characters max. /block
Maximum number of effective characters
that can be written in a block
Fig. 3.3
3.3 PART PROGRAM TAPE PUNCHING
3.3.1 PAPER TAPE SELECT
For part program , eight-channel paper tapes
for computers conforming to C6243 (width:
25.4 mm, thickness: 0.108 mm) are used.
The color should be black or gray.
Tapes with high transparency tend to cause read-
ing errors , and should not be used.
3.3.2 NC TAPE PUNCH
Part programs written on process sheets are
punched in E
IA or 1S0 codes in paper tape with
a tape puncher .
000000000000
000000000000
000000000000
000000 000000000000 000
000000000000
00 . 0..0....0 0 ..0
000000000000
000000000000
000000000000
.
30 mm
c
NC TAPE
SPLICE
TAPE
SPLICE TAPE
8-CHANNEL
FOLLY PERFORATED
SILVER
Fig. 3.4 Splicing Part Program Tape
3.4.2 KEEPING NC TAPE
Part program tapes should be stored in a clean
area, free of contaminants and humidity. Do not
handle part program tapes wearing gloves con-
taminated with oil or cutting fluid.
Generally, properly maintained part program
tapes can last at least 300 cycles, with one cycle
consisting of one reading and one rewinding pass.
A part program tape should be provided with a
proper length of feed holes at the leading
and the trailing ends.
For a tape reader using
6“ reels, the feed hole length should be at least
70 cm , and for a tape reader using 8“ reels , it
should be at least 1 m ,
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