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3. SPECIFICATIONS
I
~
- - - . , 1
MELsEc.A
3.4.2
Zero
return
data
This defines a home position or zero point for the A1 SD71. Refer to Table 3.6.
Zero return data is checked when:
1) parameters or zero return data is transferred from the peripheral device
2) "PC ready signal" output from the PC CPU to the AlSD71 changes from
3) Zero return, positioning, jog operation, or manual pulser inching is se-
Table 3.6 Zero return Data
to the
A1 SD71;
OFF
to ON; or
lected in the peripheral device test mode.
rnrn
PULSE
degree
inch
s t t l n g range
Unit
setting range
Unit
s t t l n g r m g e
Unit
p t t i n g range
Unit
I
Zero return direction
1
:
Reverse direction (address decreases)
1 0 :
Forward direction (address increases)
0 : Pulse generator(PG)zero-point signal
2
:
Stopper stop (2) and signal from drive unit
2 1
:
Stopper stop ( 1 ) and dwell timer time-out
Zero return method
3
Creep speed
5
mm/min
1 to12000
Zero return speed
4
x 10'' prn
162 x
07
Zero return address
0 to
0 to
0 to
0 to
162x10'
16252928
deg
162 x107
inch
P LS
x 10'
x1 0'
; ; g / m i n
1
to12000
y; c h/ m i n
1 to12000
'
pLS/sec
1 to12000
1 to12000
inch/min
1 to12000
mm,min
1 to12000
PLs/sec
x10'
x1
x1
0 '
6
10 to 250(%)
Torque limit
7
0 to 499(x10' msec)
Zero return dwell time
POINTS
I
(1) No.
3 to
No.
7 can be set by the sequence program.
(2) Setting numbers
"0
and
1"
of the zero return direction and setting
numbers
"0,
1,
and 2" of the zero return method are numbers
set
by a peripheral device.
When setting No.
1
and No. 2 from the sequence program, refer to
Section 3.5.6.
The zero return speed and creep speed in Table 3.6 are multiplied by 6.1 (PLSlsec).
For example, the value that is nearest to 200 (PLSlsec) is multiplied by 6.1 (PLS/sec), even if
the speed limit value is set to 200 (PLSlsec). (Decimal point values are rounded off.)
The actual speed is 6.1 x 32
=
195.2 (PLS/sec)
200
+
6.1
=
32.78688
....
3
-
23
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