
8.MULTI-PATH CONTROL B-63943EN-1/02
- 884 -
Slave axis parking
Turret 1
X1
Z1
Turret 2
X2
The X1- and Z1-axes are moved by commands in
a path 1 program (by synchronizing the Z2-axis
(slave) with the Z1-axis (master)). At this point, the
Z2-axis (slave) is kept in a parking state.
Because the coordinates of both Z1- and Z2-axes are updated, move
commands can be executed immediately, without resetting up the
coordinate system, when the synchronization state is switched.
Parking causes the positional relations between machine, absolute, and
relative coordinates to shift. After reference position return,
therefore, set the workpiece coordinate system.
- Reference position return and its check during synchronous control
If a reference position return command is issued for a synchronous
master axis during synchronous control, it is executed normally for the
master axis, but the slave axis does not return to its reference position
(the slave axis only moves in synchronization with the reference
position return of the master axis).
An exception is for automatic reference position return (G28) issued
when the master axis is in a parking state, in which case the amount of
movement is calculated so that the slave axis returns to its reference
position provided that a reference position return has been carried for
the slave axis. If the reference position of the slave axis has not been
established, alarm (PS0354) will result.
If, in Cs axis synchronous control, the master axis is not in the parking
state and the reference position of the master axis has not been
established, a reference position return operation will be performed in
reference to the master axis machine position, with the G28 command
for the master axis.
If the master axis is in the parking state and the reference position of
the slave axis has not been established, a reference position return
operation will be performed in reference to the slave axis machine
position, with the G28 command for the master axis.
If more than one slave axis belongs to one master axis, a reference
position return command is executed so that the lowest-numbered
slave axis returns to its reference position. If the master axis in one