PROGRAMMING 18. SPECIFYING THE LASER FUNCTION
When G01 is used instead of G00 to perform positioning, beam output
must be stopped during positioning operation.
When G01S0 or G01Q0 is specified because G01 is used for positioning
in the power control mode, the power and pulse duty cycle are clamped
at the minimum peak power (parameter No. 15090) and minimum pulse
duty cycle (parameter No. 15092) of power control, so the beam cannot
sometimes be stopped.
When bit 4 (SQ0) of parameter No. 15096 is set to 1, power control is
stopped if either the specified peak power (parameter No. 15040) or the
specified pulse duty cycle (parameter No. 15042) is set to 0.
This can surely stop the beam also at the time of positioning.
When the beam is stopped using G01S0, however, the minimum output
power (parameter No. 15211) must be set to 1.
The reference feedrate (Fc in Fig. 18.3) is usually used as a specified
feedrate when the power control mode is entered. By setting bit 5 of
parameter No. 15096, a feedrate obtained by applying a feedrate override
to a specified feedrate can be used as a reference feedrate.
1) When the specified feedrate when the power control mode is entered
is the reference feedrate (bit 5 of parameter No. 15096 is set to 0)
In this case, even when the feedrate override value is changed in the power
control mode, the reference feedrate is kept unchanged, but the actual
feedrate changes. So, the laser output changes according to the actual
Reference feedrate Fc
Override changed (large to small value)
Actual feedrate and laser output (1)
2) When the reference feedrate is obtained by applying a feedrate override
to a specified feedrate (bit 5 of parameter No. 15096 is set to 1)
In this case, as the override value is changed, the reference feedrate
changes. Therefore, when the feedrate is steady, the laser output is kept
unchanged; during acceleration/deceleration due to change in override,
the laser output changes.
If the feedrate override value is decreased, the actual feedrate and laser
output are changed as shown below.
D When using G01 to
D Reference feedrate when
the feedrate override
value has been changed