
6.INTERPOLATION FUNCTION B-63943EN-1/02
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Diagnosis screen
For polygonal turning with two spindles, the following information is
displayed on the diagnosis display screen.
#7 #6 #5 #4 #3 #2 #1 #0
470 SC0 LGE SCF PSC PEN PSU SPL
Polygonal turning with two spindles
Indication of information about the polygon synchronization mode
SPL Spindle-spindle polygon synchronization under way
PSU Spindle-spindle polygon synchronization mode being activated
NOTE
If only PSU becomes 1, but no change occurs, and
the program stops in a block containing a G51.2
command, the speed of an spindle does not reach
the targeted polygon synchronization speed, for
example, because bit 7 (PST) of parameter No.
7603 = 0 keeps the spindle from being energized.
PEN Spindle-spindle polygon synchronization mode released
PSC Spindle speed being changed during spindle-spindle polygon
synchronization mode
SCF Spindle speed changed during spindle-spindle polygon
synchronization mode
LGE The loop gain is different between the spindles during spindle-spindle
polygon synchronization mode.
NOTE
When the speed is changed during polygon
synchronization mode, LGE is set to 1 if the spindle
synchronization control loop gain used by the serial
spindle control unit is different between the master
spindle and polygon synchronization axis.
DGN indicates the loop gain because this function
requires that both spindles be controlled with the
same loop gain. However, no alarm is issued even
if the loop gain is different between the spindles.
(For the serial spindle control unit, the parameters
used are changed according to the state of the
CTH1 and CTH2 signals.)