
FANUC AC SPINDLE MOTOR a series
2. FUNCTION EXPLANATION
B–65160E/02
128
If the G00 command is executed when the machine has not
returned to the reference position since switching to the Cs
contouring control mode, aseries (Serial) spindle performs
normal positioning from its stopped position.
In this case, the reference position is not recognized.
So the machine must be returned to the reference position by
using the G28 command.
If the G00 command is executed after the machine has
returned to the reference position, the reference position is
recognized. The coordinate system is established, then
normal positioning is performed.
PRM No. 1005 #0=0
(ZRNx: Reference position return function is provided for
each axis.)
If the G00 command is executed when the machine has not
returned to the reference position since switching to the Cs
contouring control mode, the PS alarm is generated.
(c) Operation after switching to the Cs contouring control mode
Immediately after switching from the spindle rotation control
mode to the Cs contouring control mode, the current position is
lost. Therefore it is necessary to return the machine to the
reference position.
If parameter setting indicates that the reference position function
is not provided and the coordinate system is not required,
however, a move command for the Cs axis can be executed
without returning to the reference position.
(d) Interruption of return to the reference position
Manual operation mode
The reference position return operation for the Cs contouring
control axis can be interrupted by reset or emergency stop.
In all cases, after the interruption, the reference position
return operation must be performed again from the
beginning.
Automatic operation mode
The reference position return operation for the Cs contouring
control axis can be interrupted by reset or emergency stop.
In all cases, after the interruption, the reference position
return operation must be performed again from the
beginning.