Automatic Operation (Synchronous Control)
9-4
9.2 Settings for Master and Slave Axes
9.2.1 Selection of Master Axis and Settings
The master axis serves as a reference for synchronization control. Start and stop requests for
various operations are made to the master axis under synchronous control. It is possible to
select one of the following master axes.
Type of master axis
Master axis
Description
Real axis
Use one of them if the master axis needs to be an object of control as well. If a real axis is
used as the master axis, the rest of the real axes can be used as slave axes.
Virtual axis
It is a virtual axis controlled within FP7 MC Unit. The virtual axis can be used only as the
master axis. Real axes can be used effectively by using the virtual axis.
Type of master axis and restrictions
Operation mode
Usable axis
Remarks
Real axis
Home return
○ △
Virtual axes are available only for "Data set"
method.
JOG operation
○ ○
Positioning
Single axis ○ ○
Interpolation
axis
○ ○
Available in any of the following combinations.
Real axis + Real axis
Virtual axis + Real axis
Virtual axis + Virtual axis
Stop
function
System stop
Emergency
stop
Deceleration
stop
○ ○
Limit stop ○ △
For virtual axes, only the stop by software limit is
available.
Error stop ○ ○
• While the unit is in synchronous control, slave axes set to use the master
axis operate only in synchronization with the master axis, i.e., the slave
axes cannot operate independently.
• For using the virtual axis, check the box for the virtual axis in the dialog box
to select used axes in "CMI".
• The home return of the virtual axis is possible only by data setting.
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