02.93 2 Description of Functions
2.1.1 Overview
Figure 2.2 shows possible configurations of the TO memory. The maximum number of the
single-edge tools (WZ
ANZ
) that can be stored depends on the assignment of the P memories:
WZ
ANZ =
32768 bytes
(P
ANZ *
k
1
)
(SINUMERIK 840/840C)
WZ
ANZ =
16384 bytes
(P
ANZ *
k
1
)
(SINUMERIK 880/880 GA2)
k1: Width of one P memory; 4 bytes
P
ANZ
: Number of P memories used
The maximum number of tools that can be stored decreases in accordance with the number of
additional cutting edges available for the first cutting edge of multi-edge tools.
Structure of the TO memory
The TO memory is a two-dimensional matrix, divided up into columns and rows. The columns
represent the P memories where the tool data is stored. The tool data is stored line by line in
the individual P memories in the form of offset blocks. Each cutting edge requires one offset
block.
Fig. 2.3 Assignment of the TO memory
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
P31
2)
P10 to P15
T No. Type Geo-
metry
1)
Wear
a
a
a
a
a
a
a
a
a
a
f
r
D No.
P0 P1 P2 P3 P4 P5 P6 P7 P8 P9
min. number of P memories
max. number of P memories
1)
Add. offset
The lines of the TO memory are addressed via a D No. The number of memory lines available
can be subdivided into TO areas; at present, however, only TO area 1 is supported by
package 1 and 2.
As already mentioned in conjunction with "Configuration of the TO memory", the number of
P memories varies between P 9 and P 15/P31 depending on the scope of application with
SINUMERIK 840/840C. Both the number of P memories and TO areas is specified in the form
of NC machine data (see Section 10, Data areas).
© Siemens AG 1991 All Rights Reserved 6FC5 197-0AA40-1BP1 2–3
SINUMERIK 840/880 (PJ)
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