Fanuc Power Mate i-D/H Operator Manual

PROGRAMMING
(Common to Power Mate i–D and –H)
B–63174EN/03
16. AXIS CONTROL FUNCTIONS
167
In synchronous axis control, commands that require no axis motion, such
as the workpiece coordinate system setup command (G92), are set to the
Y axis by program command Yyyyy issued to the master axis.
For signals such as interlock, and machine lock, only the signals issued
to the master axis are valid in the synchronous operating mode. Signals
issued to other axes are ignored.
Both the pitch error and backlash are compensated independently for the
master axis and the slave axis.
Turn on the manual absolute switch during synchronous operation. If it
is off, the slave axis may not move correctly.
The difference between the master axis and slave axis in servo positional
deviation is always monitored. If the difference exceeds the parameter–
set limit, an P/S alarm (No.213) is issued.
The difference between the master axis and slave axis in machine
coordinates is always monitored. If the difference exceeds the parameter–
set limit, an P/S alarm (No.407) is issued.
When the power is turned on, compensation pulses are output for the slave
axis to match the machine position of the master axis with the machine
position of the slave axis. (This is enabled only when the absolute
position detection function is used.)
Compensation for out–of–synchronism (where the difference between
the master and slave axes in servo positional deviation is always
monitored and the servo motor for the slave axis is compensated to reduce
the difference) is not performed.
When the machine is manually returned to the reference position during
synchronous operation, both the master axis and the slave axis move
synchronously until the acceleration movement is complete. However,
grid detection thereafter is carried out independently.
NOTE
1 During synchronous operation, reference position return
operation with no dogs is also possible. Grid detection is
performed independently as in the case of reference
position return operation with dogs.
2 If high–speed reference position return operation is
performed during synchronous operation, the reference
position return completion lamp is turned on for the V–axis
as well as for the Y–axis, regardless of whether the
reference position along the V–axis is reached upon
completion of return operation.
Limitations
Setting a coordinate
system
Interlock and machine
lock
Pitch error
compensation
Manual absolute
Synchronization error
check using positional
deviation
Synchronization error
check using machine
coordinates
Synchronization
Compensation for
out–of–synchronism
Manual reference
position return

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