
B--63003EN--1/02
9. SPINDLE SPEED FUNCTION
894
NOTE
1 When the parking function is activated for a spindle in a
mode featuring a positio n loop, such as Cs contour axis
control mode, spindle positioning mode, and rigid tapping
mode, the spindle is stopped at the point where the parking
function is activated. If the spindle is shifted from the stop
position because of the application of an external force, for
example, an excess error alarm is issued. (In simple spindle
synchronous control mode, both spindles are checked for
any positional error, regardless of whether the parking
function is being used.)
2 If reference position return is specified in Cs contour axis
control mode, or if spindle orientation is specified in spindle
positioning mode when one spindle is placed in the parking
state, the reference position return completion signal is
turned on when the reference position is established for the
other spindle.
Even for simple spindle synchronous control, those functions (including
the spindle orientation function) and input/output signals that are to be
directly specified for spindle control from the PMC are controlled
independently for the first and second spindles.
Specifically, control over the signals in the following areas is exercised
independently for the first and second spindles, regardless of whether
simple spindle synchronous control mode is enabled.
First spindle: (DGN DI-->G0070 to G0073, DO-->F0045 to F0048)
Second spindle: (DGN DI-->G0074 to G0077, DO-->F0049 to F0052)
When using the simple spindle synchronous control function, use the
signals for the second spindle (DGN DI-->G0074 to G0077, DO-->F0049
to F0052) as required in addition to simple spindle synchronous control
signal ESRSYC.
Basically, no conventional PMC signal addresses and sequences need to
be modified for simple spindle synchronous control, except for the
addition of PMC control over the second spindle.
Simple spindle synchronous control can be turned on and off by turning
simple spindle synchronous control signal ESRSYC on and off.
NOTE
In simple spindle synchronous control mode, the states of
the first and second spindles are checked. So, if simple
spindle synchronous control is specified in Cs contour axis
control mode before the second spindle is activated, for
example, the VRADY OFF alarm may be issued. Careful
attention should also be paid to PMC control over the
second spindle.
D PMC signal control