6.
OUTLINE OF OPERATION MODES
6.1
JOG Operation and Machine Home Posi-
tion Return Operation
Seven operation modes are available in the PGU in
accordance with the start command type. The data on
speed and position should be transferred preliminarily
from the PC to the buffer memories (BFMs) of the PGU.
The transfer data addresses are BFMs #0 to #25 which
are allocated as described in Section 5.1.
■
JOG operation
While the forward or reverse button is pressed and held,
the motor is driven forward or in reverse.
Any value between the bias speed V
bia
(BFM #6) and
themaximum speed V
max
(BFMs #5 and #4) is valid as
thecommand spe
e
d V
JOG
(BFMs #8 and #7). The
acceleration/deceleration time T
a
(BFM #15) is thetime
between Vbia and V
max
.
V
max
, V
bia
and T
a
are equivalent in the operation modes
described later.
■
Machine home position return operation
When the home position start command is received, the
motor makes the machine return to the home position.
When returning to the home position is completed, the
homeposition HP (BFMs #14 and #13) valueis written
to thecurrent position CP (BFMs #27 and #26).
Position
➃
in the figure below indicates the machine
home position.
➀
When thehomeposition return start command is changed
from OFF to ON, thehomeposition return operation is
started at the speed VRT (BFMs #10 and #9).
➁
When the near point signal DOG input is turned on, the
motor decelerates to the creep speed VCR (BFM #11).
➂
When the near point signal DOG input is changed
from ON to OFF and themotor zero point signal PG0
is received (There is setting by BFM #3 b13), the
motor is immediately stopped in the position
➃
. The
value of the home position address is written in the
home position value by generating a clear signal.
For the details, refer to Sections 6.1.1 to 6.1.4.
Speed
JOG command input
Ta
V
max
V
bia
V
JOG
Ta
Speed
Completed
max
V
V
bia
V
CR
V
RT
DOG OFF
DOG ON
Start
#
$
%
&
6
FX-1PG/FX
2N
-1PG PULSE GENERATOR UNIT
OUTLINE OF OPERATION MODES
6-1
