
B–63010EN/02
4. DESCRIPTION OF PARAMETERS
391
NOTE
This parameter can be used, for example, when
single–rotation signal detection cannot be guaranteed at an
arbitrary feedrate because a separate detector is installed to
detect the spindle single–rotation signal, as when a built–in
spindle is used. (When bit 7 of parameter No.4016 for the
serial spindle is set to 1, together with this parameter, a
single–rotation signal detection position in spindle–spindle
polygon turning mode is guaranteed.)
COF In spindle–spindle polygon turning mode, phase control is:
0 : Used.
1 : Not used.
NOTE
When the use of phase control is not selected, the steady state
is reached in a shorter time because phase synchronization
control is not applied. Once steady rotation is achieved,
however, polygonal turning must be completed without
changing the steady state. (If the rotation is stopped, or the
rotational speed altered, polygonal turning is disabled because
of the inevitable phase shift.) Even when this parameter is set
to 1, an R command (phase position command) in a block
containing G51.2 is ignored ; no alarm is issued.
#7
PST
7603
#6 #5
RDG
#4 #3 #2
SBR
#1
QDR
#0
RPL
[Data type] Bit
RPL Upon reset, spindle–spindle polygon turning mode is:
0 : Released.
1 : Not released.
QDR The rotational direction of the polygon synchronization axis:
0 : Depends on the sign (+/*) of a specified value for Q.
1 : Depends on the rotational direction of the first spindle. (If * is spe-
cified for Q, P/S alarm No.218 is issued.)
SBR For spindle synchronization, speed ratio control is:
0 : Disabled.
1 : Enabled.
NOTE
The spindle synchronization option is needed.
Parameter Nos. 7635 and 7636 also need be set up.
RDG On the diagnosis screen No.476, for spindle–spindle polygon phase
command value (R), displays:
0 : The specified value (in the increment system for the rotation axis).
1 : The actual number of shift pulses.