Mitsubishi Electric A173UHCPU Programming Manual page 41

3. POSITIONING SIGNAL
(5) Speed control in progress signal (M2404+20n)
(a) The speed control in progress signal is ON during speed control and is used
to determine whether speed control or position control is currently being
executed.
In speed/position switching control, it remains ON until the switch from
speed control to position control is executed on receipt of the CHANGE
signal from an external source.
(b) The speed control in progress signal is OFF when the power is switched ON
and during position control.
Stsrt of speed/position
switching control
Speed control
in progress OFF
signal
(M2404+20n)
(6) Speed/position switching latch signal (M2405+20n)
(a) The speed/position switching latch signal comes ON when control is
switched from speed control to position control.
It can be used as an interlock signal to enable or disable changing of the
travel value in position control.
(b) The signal goes OFF when any of the following are started.
• Position control
• Speed/position switching control
• Speed control
• JOG operation
• Manual pulse generator operation
Start of speed/position
switching control
Speed/position
ON
switching latch
signal(M2405+20n)
CHANGE signal
OFF
from external
source
(7) Zero pass signal (M2406+20n)
This signal comes ON when the zero point is passed after the power to the
servo amplifier has been switched ON.
Once the zero point has been passed, the signal remains ON until the CPU has
been reset.
In the zeroing method of proximity dog or count type, however, the signal goes
OFF once at the start of zeroing and comes ON again when the next zero point
is passed.
Speed/position swiching
control
CHANGE Start of speed control
ON
Speed Position
control control
CHANGE
OFF
ON
3 − 10
Speed control
Start of positioning
Start
Position control
t
t