6.
PROGRAMMING
/MELSEC-A
(1)
Flow
chart
(2)
Conditions
(7
Positioning
Turn off PC ready signal Y1D
I
Write parameters and zeroing
data to buffer memory.
1
1
1
.
Write positioning data to buffer
memory.
Turn on PC ready signal
Y
1D.
Write start
No.
to buffer memo-
ry.
.
+
Write pointer to buffer memory.
Turn on positioning start signal
Start
complete
i
YES
Turn off positioning start signal
(Y10,
Y11. Y121.
I
A
Complete
External
signal
Drive unit READY
OFF
STOP
ON
ON
AD71 re&
(X1)
Interface
signal
Relevant axis krsy
4x4,
X51
RelevMt axis positioning
commenced
(X8,
X9)
Relevant exb
stop
(Y15, Y161
PC ready (Y 1 D)
Positioning data
ON
1
Start data number
If positioning speed
is
higher
retting
than the speed limit value,
positioning
is
executed at
the
speed
limit
value.
Other
Zero address
Monitor presnt value
0
preLent value
4
16,252,928
After signal from the GPP or signal from the AD71TU,
neither axis should be bury.
'In
GPP or AD71TU test mock?, X1 and Y1D may
be
off.
Tab
6.1
Start
Conditions
3)
Timing
Pattern 01
*
Depends
on
patterr
c
after stan
Speed
I
Dwell
time
I
PC ready (YlD)
AD71 ready(X1)
Stop (Y15)
X axis start (Y
10)
X axis BUSY (X41
K
axis positioning commenced (X81
X
axis positioning complete (x2)-
-
M
code
M
code
ON
(XE)
M
code
OFF
(Y1Bl
6-16
IB
INAI
€6101
C
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