Mitsubishi Melsec-A Series User Manual page 47

3. SPEWICATIONS
/MELSEC
(1
)
Speed change area ( X axis: address 40, Y axis: address 340)
To change the speed of traverse during positioning, jog operation
or home positioning, write the new speeds to these addresses. (To
be within the range shown in Table
3.7
page 3-23) This data over-
rides the
speed
set in the positioning data. Speed change is illustrated
in Fig. 3.24 below.
I V
Speed data written to
speed
change area
I t
V = speed
t =
time
Fig. 3.24 Speed
Change Example
POINT
j
Acceleration and deceleration cycles use the positioning data
speed regardless of any forced speed change.
The s p e e d cannot be force changed under
the following
circumstances:
0
after a deceleration start point;
0
in inching mode;
after a stop command or after the jog signal is turned off;
0
during interpolation positioning.
or
(2)
Present value change area ( X axis: address 41,42, Y axis: address 341, 342)
To change the present value data in the AD71, write the new value
to these addresses.
POINT
I
The present value
cannot be changed while the AD71 is
BUSY.
Present value data is two words long, one word data cannot
be written.
(3) Jog speed area ( X axis: address 44, Y axis: address 344)
Specify the
jog
speed by writing speed data to these addresses.
This data may be written at any time.
3-32
IB lNAl 6 6 1 0 1 - A