
B–65162E/03
11. OPTION RELATED TO SPINDLE
421
(g) Spindle orientation command in which the stop position is specified externally (SHA11 to SHA00)
D This command is used for specifying a stop position with an absolute
position within one rotation in the following equation:
Stop position (degrees) +
360
4096
ȍ
11
i+0
(2
i
P
i
)
where
Pi = 0 when SHAi = 0
Pi = 1 when SHAi = 1
D When this command is used, the stop position parameters in spindle
orientation with a position coder (In case of Series 16 : No. 4031) are
invalid.
(2) Output Signals (CNC to PMC)
(a) Signal addresses
#7 #6 #5 #4 #3 #2 #1 #0
FS0 FS15 FS16
ORARA TLMA LDT2A LDT1A SARA SDTA SSTA ALMA
: F281 F229 F405
First spindle control output signal
#7 #6 #5 #4 #3 #2 #1 #0
FS0 FS15 FS16
ORARB TLMB LDT2B LDT1B SARB SDTB SSTB ALMB
: F285 F245 F049
Second spindle control output signals
(b) Orientation (fixed position stop) completion signal (ORARA)
D When the orientation command is input and the spindle has stopped
near the preset fixed position (for example, within "1°), it becomes
”1”.
Condition for ORARA to become ”1”
(ORCMA is ”1”) (zero-speed signal SSTA is ”1”)
=
Near to fixed position
Near to fixed position is set to the parameter in case of Series 16
(PRM4075=Orientation complete signal detection level).
If the above 3 conditions are satisfied, the orientation complete signal
is output.
If the orientation completion signal is not issued within a set period of
time after the orientation command signal is input, it is considered to
be abnormal. So it should be detected by the power magnetic sequence
and an orientation alarm should be issued.
D Tool change or workpiece loading/ unloading operations can be started
when this signal is ”1”.