
14.PMC CONTROL FUNCTION B-63323EN-1/02
- 1348 -
makes the newly specified continuous feed rate valid.
In the same way as a cutting feed--feed per minute, the specified
feedrate can be multiplied by 10 according to the setting of
parameter F10 (bit 1 of parameter No. 1409). In continuous feed,
the feedrate can be further increased to 200 times depending on
the setting of parameter JFM (bit 7 of parameter No. 1409).
With the continuous feed command - feed per minute and skip -
feed per minute, override by the signal OVxX7to OVxX0 or
override change command (CDxX7 to CDxX0 : 0Ch) is effective.
[Unit of data] Same way as a cutting feed--feed per minute
[Valid data range] 1 to 65535
NOTE
1 The feedrate data can be increased to 200 times the
specified feedrate only for a continuous feed
command (CDxX7 to CDxX0: 16h).
2 The actual feedrate may not be displayed normally
depending on the situation.
CAUTION
If a result of overriding does not fit the rapid traverse
rate, the actual feedrate is clamped to the rapid
traverse rate.
(15) External pulse synchronization--for main spindle (CDxX7 to
CDxX0: 1Bh)
A weight for the external pulse is specified.
A value obtained by multiplying the external pulse weight by 256
is specified in signals FDxX15 to FDxX0. So, the minimum unit
for weight specification is 1/256 times, and the range that can be
specified is from -127 times to +127 times.
If the specified pulse weight is a negative value, axis movement
occurs in the reverse direction. After a new pulse weight is
specified during axis movement based on external pulse
synchronization, reversing the state of axis control command read
strobe signal PMCAx causes axis movement to be based on the
new pulse weight.
[Unit of data] × 1/256
[Valid data range] -32767 to 32767
CAUTION
The parameter for rapid traverse rate of each axis
(parameter No. 1420) is used for clamping.