B-62694EN103
OPERATION
1 .FOR Series 16/l 8-B/C, Series 16i/l8i-A
1.102
How to Use the Buffer Mode
CNC
The buffer mode is used to control a larger NC program than
the size of the built-in hard disk. On this buffer mode, you
can operate “1.4 CALLING A SUBPROGRAM WITH Ml98
and “1.7 DNC OPERATION”.
The operation on the screen is the same as the one on the
storage mode.
On this buffer mode, Oxxxx file called by “1.4 CALLING A
SUBPROGRAM WITH M198” or “1.7 DNC OPERATION” is
a list of files. It consists of the file names arranged in calling
order. The software of the Data Server gets a NC program
from the Host Computer according to this list of files and
supplies the NC program into the CNC.
Call a
program
oxxxx
b
+Ki
file2
file3
file4
file5
Data Server
Host Comnuter
\
\
file4
contents
of oxxxx
file1
file2
0
file3
file4
file5
The files (from file1 to file5) specified in the list of files are
got in the built-in hard disk by using FTP and supplied to the
CNC. In case of the buffer mode, after the CNC calls the NC
program(Oxxxx) to the Data Server, the Data Server gets the
specified list of files and then gets the first NC program from
the Host Computer. So, it takes a few moment for the Data
Server to supply the data to the CNC.
The Data Server supplies the part of the NC program in one
area and gets the next part into another area by using FTP at
the same time. So, you must divide the original NC program
into about 35MB(from 32MB to 38MB, the last part of the NC
program is any size less than 38MB) evenly in advance.
When the Data Server finishes supplying the part of the NC
program of one area, if the continuous part is got into
another area by the “GET’ command of FTP, the request
ends abnormally because it is impossible to supply the
continuous part to the CNC. About the file name, the list of
files must be named as Oxxxx (xxxx : the integer of four
digits that expresses the O-number). But the file name in the
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