
3. PERIPHERAL EQUIPMENT CONTROL
B--65245EN/02
HANDLING
94
A gradual stop occurs if a mode other than the jog feed mode is selected
or the feed axis direction command signal (+X or --X) is turned off during
reference position return. Reference position return must s tart at a point
sufficiently away from a deceleration area and must be performed in the
direction toward the reference position. The deceleration area is as shown
below.
Point where *DEC
is released
Reference position
Deceleration area
A low constant feedrate after deceleration is set using parameter No. 054.
NOTE
1 If the direct command interface is used, select the AUTO
mode and input 60H as function code, then invert the EBUF
signal. Then, the machine movable part moves by rapid
traverse for reference position return operation.
2 If a reference position is already established, the machine
is always positioned by rapid traverse at the reference
position.
When a deceleration limit switch for reference position return is installed,
the condition shown below must be satisfied.
Feedrate
Return direction
Reference position
Deceleration
limit opera-
tion point
Deceleration
limit release
point
V
L
L
DA
L
DW
V
R
3.5.1.2
Deceleration limit switch
installation condition