
B–63523EN–1/03
9. SPINDLE SPEED FUNCTION
1005
NOTE
1 The multispindle function is necessary. The function cannot
be used for the first and second spindles simultaneously.
2 The multispindle function can control the speed of three
spindles and switch the feedback signal between two
position coders. It also can work without the second or third
spindle.
3 For a two–path lathe application, the first spindle on tool
post 1 is the master, and the first spindle on tool post 2 is the
slave. The second spindle of either tool post cannot be
used in spindle synchronization.
4 These functions belong to the spindle control unit. They
cannot be used unless the spindle control unit supports
those functions.
5 Spindle polygon turning is available for a combination of the
spindle of tool post 1 and the spindle of tool post 2 for the
two–path lathe application.
The signals and parameters for spindle speed control are common to both
spindle serial output and spindle analog output. (See Section 9.3.)
The table below lists the differences related to direct control of the spindle
control unit.
Spindle control unit for
spindle serial output
interface
Spindle control unit for
spindle analog output
interface
Parameters for
the spindle con-
trol unit
Specified as CNC parame-
ters
(4000 to 4351/S1, S2)
Used after being transferred
to the spindle control unit
Directly specified for the
spindle control unit
Control signal for
the spindle con-
trol unit
Connected to the PMC via
the CNC
G0070 to G0073 and F0045
to F0048:
Addresses for the first
spindle
G0074 to G0077 and F0049
to F0052:
Addresses for the second
spindle
Connected to the PMC via
an external contact
Spindle speed
command inter-
face
Digital data in a range from
0 to"maximum spindle mo-
tor speed
Analog voltage from 0 to
"10 V (excluding portion
for offset voltage adjust-
ment)
Position coder
interface
Connected to the CNC via
the spindle control unit
Connected directly to the
CNC