
FANUC AC SPINDLE MOTOR a series
2. FUNCTION EXPLANATION
B–65160E/02
56
Adjust the orientation stop position shift parameter by following the
procedure below.
(1) Specify parameters as follows:
Bit 7 of parameter No. 4016 = 0
Parameter No. 4031 = 0
(When external signals are used for setting, set the SHA11 to
SHA00 DI signals to 0.)
Parameter No. 4077 = 0
(2) To display the position coder counter under position control, set the
following on the spindle check board:
d–01 = 114
d–02 = 0
d–03 = 0
d–04 = 0
(3) Enter an orientation command (ORCMA) to stop orientation.
(4) Once orientation stops, check that 04096 or an integer multiple of
4096 (0, 4096, 8192, ...) is displayed.
(5) Release the orientation command to deactivate the motor.
(6) Manually position the spindle to the position where you want the
spindle to stop. Then, read the displayed value.
(7) Obtain the difference between the value read in (6) and the value
obtained in (4). Specify the obtained difference as the orientation stop
position shift parameter.
Setting = Value read in (6) – value read in (4)
Example:
Value displayed when orientation
is stopped = 04096
Value displayed when the spindle
is positioned manually after
deactivating the motor = 05120
Value to be specified in the parameter = 5120 – 4096 = 1024
2.1.6
Adjusting the
Orientation Stop
Position Shift
Parameter