Mitsubishi Melsec-A Series User Manual page 52

3. SPECIFICATIONS
/MELSEC
(a) Start axis area details
Use the two least significant bits of these addresses to define the
start
axis.
(See
Fig.
3.30.)
b15
b l bo
I---=--------=!
.-
I
I
b2 t o b15 rnav be 1 or 0
I
I
(ignored
by
OS).
00
: Interpolation start
01 : X axis start
I
10 : Y axis start
11 : Both-axes start ( N o interpolation)
I
Fig. 3.30 Start Axis Area
The following occurs if both axes are started and an error
is
found in one:
1) both axes stop if the error has occurred between consecutive
positions.
2) only the axis
with the error stops if the error occurred
after both axes have started.
(b) Data setting precautions
1) When both axes are to be started together (Le. interpolation
setting
00
or independent setting 1 1 ) ensure that the start
axis data matches for both
X and
Y
axes at that point.
Processing will stop if the data does not match. Refer to Fig.
3.31.
X axis Y axis
Address 0
[T
Address 300
- 1
t
1st point
303
304
305
306
c -
c-
3 r d
4th
point
Doint
In
the
above example.
X axis Y axis
2nd point
Interpolation start Interpolation start
-t
OK
3rd point
Both-axes start Both-axes start
-
OK
4th point
X axis start
Interpolation start
-
Error Y axis
stops
Fig.
3.31 Start Data Example 1
3-37
IB
INAl
66101-A