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3.
SPECIFICATIONS
MELSEC-A
3.4.3
Positioning data
'ositioning
nformation
'ositioning speed
'ositioning
Iddress
)well time
-r
Positioning data is used
in the AlSD71 to execute positioning
control (i.e.
control other than zero return, inching and jog operation). Refer to Table 3.7.
Table 3.7 shows one block of positioning data. 400 blocks can be set for the
X and Y axes, respectively.
The block of data used for positioning is dictated by the number set in the
positioning start area of the buffer memory.
Positioning data is checked when positioning is started.
Table 3.7 Positioning Data List
Sotting Data
b15
b8b7
d
J
bO
Positionin pattern
I
00 : Positioning terminated
01
:
Positioning continued
11
: Speed changed and positioning then continued
Positioning method
0
:
Absolute
1
:
Incremental
[
Valid only when incremental/absolute combination i s
specified in parameter.
Positionin direction (valid in incremental mode only)
0
:
Forward direction (address increase)
1
:
Reverse direction (address decrease)
+ Unused (may be
0
or
1)
w
M code (0 to 255)
Set M code
= 0
when M code is not specified
mm
I
inch
I
degree
I
PULS
setting
I
Unit
I
range
I
Unit
I
range
I
Unit
1
range
1
Unit
range
Setting
Setting
Setting
1 to
x i 0'
1 to
x1
1 to
x1
1 to
x1 0'
12000
mmlmin
12000
inch/rnin
12000
deg/min
20000
PLSlsec
3
to 499(x10' msec)
I
POINT
I
I
I
No.
2 to
No.
4
can be set from the sequence program.
I
3
-28
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