5 - 33
MELSEC-A
5 DATA USED FOR POSITIONING CONTROL
Setting value, setting range
Setting value buffer
memory address
Item
Value set with peripheral device
Value set with
sequence program
Default
value
Axis 1 Axis 2 Axis 3
0 : Standard speed changeover
mode
0
Pr.20
Speed changeover
mode
1 : Front-loading speed changeover
mode
1
0 26 176 326
0 : Composite speed 0
Pr.21
Interpolation speed
designation method
1 : Reference axis speed 1
0 27 177 327
0 : Do not update current feed value 0
1 : Update current feed value 1
Pr.22
Current feed value
during speed control
2 : Clear current feed value to zero 2
0 28 178 328
0 : Ignore manual pulse generator
operation
0
1 : Use manual pulse generator 1 1
2 : Use manual pulse generator 2 2
Pr.23
Manual pulse
generator selection
3 : Use manual pulse generator 3 3
Axis 1 = 1
Axis 2 = 2
Axis 3 = 3
29 179 329
0 : Positive logic 0
Pr.24
Logic selection for
pulse output to the
drive unit
1 : Negative logic 1
0 30 180 330
0 : 1-word type (1 to 65535ms) 0
Pr.25
Size selection for
acceleration/
deceleration time
1 : 2-word type (1 to 8388608ms) 1
0 31 181 331
Pr.20
Speed changeover mode
Set whether to change the speed changeover mode with the standard changeover
or front-loading changeover mode.
0 : Standard changeover .......... Change the speed when executing the next
positioning data.
1 : Front-loading changeover.... The speed changes at the end of the positioning
data currently being executed.
t
n
n+1
Change the speed when
executing the next positioning data
Speed
n: Positioning
data No.
<For standard changeover>
<For front-loading changeover>
The next positioning data starts
positioning at the designated speed
t
nn+1
Speed
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