Mitsubishi Melsec-A Series User Manual page 43

3. SPECIFKAlWNS
/MELSE
Fig. 3.20 Linur Interpolation
Note: For interpolation positioning, the actual positioning speed is
approximately
5%
l o w r than the
set
speed. (If the set speed
is extremely low, the error will be larger, e.g. about 1 0 % at
1
WPB.
I
POINT
1
During linear interpolation positioning
it
is possible for the
speed of a given axis to exceed the set speed and the speed
limit value if the travel distance for the two axes varies
greatly.
For linear interpolation,
it
is suggested that the positioning
speeds and speed limits for
the
X and Y axes are set to
the
same value.
(3)
Positioning address
The positioning address is set either as an absolute value
or an
incremental value.
(4)
Dwell
time
The dwell time is the period of time indicated
in
Fig. 3.21 below.
Positioning commenced
(X81
I
Speed graph
For pattern 00
I
-
Dwell
Fig.
3.21 Pattern
00
During interpolation positioning, the longer dwell time value is
valid irrespective of the distance travelled (e.g. if X axis
=
1
sec
and Y
axis = 1.5 sec, 1.5 sec is valid.)
3-28
IS iNAl 66101.4