Fanuc Series 15i/150i-MA (Programming) Operators Manual

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1 During synchronization, movements for the slave axis and
other axes can be specified by programming. Note,
however, that a move command must be specified in
incremental mode.
2 G27, G28, G29, G30, G30.1, G33, or G53 cannot be
specified for the slave axis in synchronization mode.
3 The controlled axis cancel function cannot be used for the
master axis or slave axis.
1 During synchronization, the slave axis and other axes can
be subjected to manual handle interruption.
2 The maximum feedrates along the master axis and slave
axis depend on the position detector used.
3 In the synchronization mode, the inch/metric conversion
commands (G20, G21, G70, and G71) cannot be
4 In the synchronization mode, only the machine position
relative to the slave axis is updated. For the absolute
position referred to the slave axis, the amount of
synchronized movement is converted to an equivalent
value within 360 and added when synchronization is
- End of synchronization
1. Axis-by-axis cancellation of synchronization using a command
The command “G80.5 β0” cancels synchronization.
In , specify the address of a slave axis. The synchronization of the
slave axis specified in β is canceled. One block allows the
synchronization of only one axis to be canceled. When β0 is not
specified, the synchronization of all synchronized axes is canceled.
The absolute coordinates are updated according to the amount of
synchronous movement. For a rotation axis, the amount of
synchronous movement (modulus with respect to 360 degrees) is
added to the absolute coordinates.
2. Cancellation of synchronization by reset
The synchronization of an axis is canceled by a reset when the RSH
bit of parameter 7612 is set to 0 (cancel the synchronization of the
axis by a reset). Whether the absolute coordinates are updated
depends on the manual absolute signal present at that time.
3. Other causes of synchronization cancellation
Synchronization is automatically canceled when:
1) Emergency stop is applied
2) A servo alarm is issued
3) An overtravel (hard/soft) alarm is issued for the EGB axis
4) A PW000 alarm (requiring power-off) is issued
5) A PC alarm or IO alarm is issued

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