
17. DATA INPUTYOUTPUT
17.2 File Head Searching
TO AND FANUC FLOPPY
17.2 File Head Searching
Men the program is input from the cassette, the file to be input first must be
searched.
For this purpose, proceed as follows:
(1)
(2)
(3)
(4
(5)
(6)
(7)
(a)
( w
(c)
I
(a
Select EDIT or AUTO mode.
Push < PROG ) key to select the program screen.
Key in [(OPRT)].
Key in the “D “.
Key in address N.
Key in a file number.
Press [F SRH].
The following head searching occurs according to the number specified:
NO
The beginning of the cassette is searched.
One of Nl to N9999
Of the file Nos. 1 to 9999, a designated file is searched.
N - 9999
The file next to that accessed just before is searched.
N - 9998
When N - 9998 is designated, N - 9999 in (c) is automatically ‘inserted each
time a file is input or output. This condition is. reset by the designation of (a),
(b) or (c) or reset.
(Note 1) When file exist in the cassette, designations of NO and Nl result in the same effects However,
when the files do not exist in the asset&e, an alarm is indicated if Nl is designated (since there is no first file).
When NO is designated, an alarm is not indicated since the head is searched regardkss of the existence of file.
Conduct NO head searcfiing, not Nl head searching when writing the programs in a blank cassette or card.
-
(Note 2) An alarm is not immediately indicated in the CNC unit even when an alarm occurs during head
searching (when a file is not found, or the like).
An alarm (P/S No. 86) is given when the input/output operation is performed after that.
(Note 3) The same result is obtained both by sequentially searching the files by speMying Nos. Nl to N9999
and by first searching one of Nl to N9999 and then using the N-9999 searching method. The searching time
is shorter in the latter case.
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