Advertisement
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 "
setting".
Here, the value within the [Table 1] range is set.
[Table 1] on right page
1 : 1-fold
10 : 10-fold
100 : 100-fold
1000 : 1000-fold
Pr.1 Unit setting
Set the unit used for defining positioning operations. Choose from the following
units depending on the type of the control target: mm, inch, degree, or pulse.
Different units can be defined for different axes (axis 1 to 4).
(Example) Different units (mm, inch, degree, and pulse) are applicable to different
systems:
mm or inch..... X-Y table, conveyor (Select mm or inch depending on the
machine specifications.)
degree ........... Rotating body (360 degrees/rotation)
pulse .............. X-Y table, conveyor
When you change the unit, note that the values of other parameters and data
will not be changed automatically.
After changing the unit, check if the parameter and data values are within the
allowable range.
Set "degree" to exercise speed-position switching control (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
Pr.1
Unit
1
10
100
1000
5 - 20
MELSEC-Q
Setting value buffer memory
address
Default
value
Axis 1 Axis 2 Axis 3 Axis 4
3
0
150
300
20000
1
151
301
20000
2
152
302
1
3
153
303
450
451
452
453
Advertisement
Troubleshooting
