
B–63833EN–1/02
2. PREPARATIONS FOR OPERATION
156
(n is the value set in parameter No. 1891.)
[Classification] Output signal
[Function] Report the motor speed status of each of the axes controlled by spindle
motors.
[Operation] Each signal is set to 1 when:
· The spindle motor speed exceeds the maximum speed set in parameter
No. 4345.
Each signal is set to 0 when:
· The spindle motor speed does not exceed the maximum speed set in
parameter No. 4345.
CAUTION
1 Some of the servo motor speed detection signals DSV1 to
DSV4 and spindle motor speed detection signals DSP1 and
DSP2 may not function depending on the axis
configuration. Even when some signals do not function, the
addresses Y(n + 0) #3 to #0 and Y(n + 1) #1 and #0 must
not be used by the PMC ladder.
2 When this function is used, Y(n + 0) #7 to #2 are reserved.
These bits must not be used by the PMC ladder.
3 A spindle motor may be used for controlling a positioning
axis, or a servo motor may be used for a spindle. This
function performs motor–related detection.
Example: When Cs contour axis control is performed (the spindle and
C–axis are controlled by the first serial spindle motor), the
fourth axis is used as the C–axis.
In this case, if the preset maximum speed is exceeded, the
following occurs regardless of whether spindle control or
C–axis control is being performed:
DSP1 <Y(n + 1) #0, where n = setting in parameter No. 1891>
is turned on.
DSV4 <Y(n + 0) #3, where n = setting in parameter No. 1891>
is not affected.
Spindle motor speed
detection signals DSP1,
DSP2 <Y(n + 1)#0 to #1>