Mitsubishi Electric Q172DSCPU, Руководство по программированию

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7 SYNCHRONOUS CONTROL
(1) [Md.400] Current value after composite main shaft gear
(30n, 30n)
The current value after combining the main input and the sub input values going
into the composite main shaft gear is stored as an accumulative value. Units are
in position units of the main input axis (Refer to Chapter 5). The unit is PLS if the
main input axis is invalid.
The current value after composite main shaft gear will be changed when the
following operations are executed in the main input axis during synchronous
control.
Servo input axis Synchronous encoder axis
Operation of main input axis
(Before synchronous control
start)
Absolute position
detection system
valid
Absolute position
detection system
invalid
Command
generation axis
Incremental
synchronous
encoder
Absolute
synchronous
encoder
Synchronous
encoder via
device
Home position return Change method 1) — —
Current value change Change method 1)
Restoration
method 1)
Change method 1)
Speed control ( )
(Note-1)
Change method 1)
Restoration
method 1)
—
Fixed-pitch feed control Change method 1)
Restoration
method 1)
—
Speed/position switching
control
(Note-2)
Change method 1) — —
Connection to servo amplifier
Change method
2)
Change method
1)
— —
Connection to synchronous
encoder
— —
Change
method 1)
Change method 2)
(Note-1): When it starts by turning OFF the feed current value update command (M3212+20n) or [Rq.347]
Feed current value update request command (20n).
(Note-2): When it starts by turning OFF the feed current value update command (M3212+20n).
(a) Change method 1)
The new current value after composite main shaft gear is calculated based
on the current value of the main input axis.
Current value after
composite main
shaft gear
=
Main input direction of
composite main shaft gear
(Input +/Input -/No input (0))
Main input axis current
value
(b) Change method 2)
The travel value of the main input axis from the last synchronous control
session is reflected to the current value after composite main shaft gear.
Current value after
composite main
shaft gear
=
Current value after
composite main shaft gear
at the last synchronous
control session
+
Main input direction of
composite main shaft gear
(Input +/Input -/No input (0))
Amount of change of travel
value of main input axis
from the last synchronous
control session