
B--63003EN--1/02
9. SPINDLE SPEED FUNCTION
737
The spindle interface for either tool post is used.
The spindle command select signals SLSPA <G063#2> and SLSPB
<G063#3> (input) specify the tool post whose spindle command is to be
followed by each spindle.
When the serial spindles are used on both tool posts, the position coder
feedback signals SLPCA<G064#2> and SLPCB<G064#3> (input) direct
each tool post to select which spindle’s position coder feedback signal is
used. Therefore, it is possible to use the spindle of the other system; for
example, tool post 1 can perform thread cutting or feed per rotation using
the spindle connected to tool post 2.
SIC
SIC
Tool post 2
spindle
contol
Tool post1
spindle
control
SLSPB SLSPA
SLPCB SLPCA
SPDL --2
JA41
SPDL --1
JA41
PC
#2
Feedback signal PC
#1
Feedback signal
PC
#2
PC
#1
Spindle
#2
Spindle
#1
Serial spindle
Serial spindle
SUB CPU BOARD
MOTHER BOARD
0
101
Feedback
Command
S
#2
0
1
S
#1
01
Feedback
Command
Fig. 9.4 (c) Two--spindle control (serial spindle)
Two--spindle control
D Selection of spindle
command
D Position coder feedback
signal (When both are
serial spindle)