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5 DATA USED FOR POSITIONING CONTROL
5.2 List of parameters
5.2.1 Basic parameters 1
Item
Pr.1 Unit setting
Pr.2
No. of pulses per
rotation (Ap)
(Unit : pulse)
Pr.3
Movement amount per
rotation (Al)
Pr.4
Unit magnification (Am)
Setting value, setting range
Value set with peripheral
device
0 : mm
1 : inch
2 : degree
3 : pulse
1 to 65535
The setting value range differs according to the " Pr.1 Unit
setting".
Here, the value within the [Table 1] range is set.
1 : 1-fold
10 : 10-fold
100 : 100-fold
1000 : 1000-fold
Pr.1 Unit setting
This sets the command unit for positioning control. The unit is selected from mm,
inch, degree, pulse according to the control target. The unit for axis 1 and axis 2
can be set independently.
(Example)
mm, inch ....... X, Y table, conveyor. (If the machine has inch specifications, set
with an inch unit.)
degree ........... Rotating body. (360 degree/rotation)
pulse .............. X, Y table, conveyor
* Even if the unit setting is changed, the other parameters and positioning data
values will not change. When changing the unit, check that the parameters and
data are within the setting range.
Set "degree" when performing speed/position changeover control in the ABS
mode.
Value set with sequence
program
0
1
2
3
1 to 65535
1 to 32767:
Set as a decimal
32768 to 65535:
Convert into hexadecimal
and set
[Table 1] on right page
1
10
100
1000
5 - 18
MELSEC-A
Setting value buffer
memory address
Default
value
Axis 1
Axis 2
3
0
150
20000
1
151
20000
2
152
1
3
153
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