Tool Change - Siemens SINUMERIK 840 Planning Manual

2 Description of Functions
2.2.1 Tool search
With the signal "T word is valid", the program first checks whether the tool at the specified
location is active. If it is a replacement tool (for example at the first call), the tool is declared
the active tool. The locator number and the data word number are output at the submagazine-
specific user interface.
If the tool at this location is disabled or cannot be enabled, a replacement tool with the same
number will be searched for. The location and the respective data word are output at the
interface.
If the tool at the specified location is disabled, a replacement tool with the same ID number will
be searched for. The location found is entered in the interface and in the data word for the
specified location in the replacement location DB. In this way, a replacement tool is searched
for only once. The locator number of the tool already found is output immediately at the next
call.
The D numbers of the reference list are automatically renamed in such a way that the user can
still use the permanently programmed D numbers. For this loading procedure, only the active
magazines are searched.

2.2.1.3 Tool change

NC program
.
.
.
.
T<No.>L06
.
L06
.
Tool change cycle
T<No.>L06
.
.
D=R102
.
.
.
.
Fig. 2.11 Preparing the tool if T No. = ID No. for turning machines
2–16
NC PLC
FB 123
T word
Tool
selection
@ 174
D=R101
M17
Turret
assignment
R param.
Current D No.
(
in R 101 to R 10x)
(x = No. of next cutting edge)
TO
Tool data
© Siemens AG 1991 All Rights Reserved
FB 133
Selection of
direction
Read disable
Setp.
Machine
pos.
program
FB 135
DB
Provide
D No.
6FC5 197-0AA40-1BP1
SINUMERIK 840/880 (PJ)
11.92