Mitsubishi Electric MELSEC-L LD75D, User Manual

Page: 166 / 818

164
(8) [Da.7] Arc address
The arc address is data required only when the circular interpolation control or 3-axis helical interpolation control
is carried out.
• When carrying out circular interpolation with sub point designation, set the sub point (passing point) address
as the arc address.
• When carrying out circular interpolation with center point designation, set the center point address of the arc
as the arc address.
When the circular interpolation control or 3-axis helical interpolation control is not carried out, the value set in
"[Da.7] Arc address" will be invalid.
(a) Setting range
• The table below lists the control systems that require the setting of the arc address and the associated
setting ranges when "[Pr.1] Unit setting" is "mm". (With any control system excluded from the table below,
the arc address does not need to be set.)
*1 Set an integer because the program cannot handle fractions. (The value will be converted properly within the system.)
*2 Note that the maximum radius that circular interpolation control is possible is 536870912, although the setting value can
be input within the range shown in the above table, as an arc address.
Item
Setting value, setting range
Default value
Setting value buffer memory
address
Value set with GX Works2 Value set with program Axis 1 Axis 2 Axis 3 Axis 4
[Da.7] Arc address
The setting value range differs according to the "[Da.2] Control system".
Here, the value within the [Table 1] range is set. (

Page 164, Section
5.3 (8) (a))
0
2008
2009 8008
8009 14008
14009 20008
20009
Circular interpolation with sub point designation Circular interpolation with center point designation
[Da.2] setting value Value set with GX Works2 (

m)
Value set with program
*1
(

10
-1

m)
ABS circular sub: 0DH
ABS circular right: 0FH
ABS circular left: 10H
■ Set the address
-214748364.8 to 214748364.7
■ Set the address
-2147483648 to 2147483647
INC circular sub: 0EH
INC circular right: 11H
INC circular left: 12H
■ Set the movement amount
-214748364.8 to 214748364.7
*2
■ Set the movement amount
-2147483648 to 2147483647
*2
ABS helical sub: 20H
ABS helical right: 22H
ABS helical left: 23H
■
Set the address
-214748364.8 to 214748364.7
■
Set the address
-2147483648 to 2147483647
INC helical sub: 21H
INC helical right: 24H
INC helical left: 25H
■
Set the movement amount
-214748364.8 to 214748364.7
*2
■
Set the movement amount
-2147483648 to 2147483647
*2
End point address
(Address set with Da.6 )
Sub point
(Address set with Da.7 )
Start point address (Address before starting positioning)
Start point address (Address before starting positioning)
Center point address
(Address set with Da.7 )
End point address
(Address set with Da.6 )