Mitsubishi Electric MELSEC Q Series Programming Manual page 248

6 POSITIONING CONTROL
ABH
Radius-specified
helical interpolation
less than CW 180°
ABH
Radius-specified
helical interpolation
less than CCW 180°
ABH
Radius-specified
helical interpolation
CW 180° or more
ABH
Radius-specified
helical interpolation
CCW 180° or more
Control details for the servo instructions are shown below.
Rotation direction
Instruction
of servo motor
Clockwise (CW)
Counter
clockwise (CCW)
Clockwise (CW)
Counter
clockwise (CCW)
(1) The setting range of end point address for the both of circular interpolation axis
and linear interpolation axis is (-2
(2) The maximum arc radius on the circular interpolation plane is (2
For example, the maximum arc radius for electronic gear 1:1 of unit [mm] is
214748364.7[ µm].
(3) Set the command speed with the vector speed for 2 axes circular interpolation
axis.
(4) The command speed unit is specified in the parameter block.
(5) Set the number of pitches within the range of 0 to 999. If it is set outside the
setting range, the servo program setting error (error code: 28) occurs, and cannot
be started.
Controllable angle of
arc
0° < < 180°
180°   360°
31 ) to (2 31 -1).
2 -1
31
Arc central point
0
-2 2
31
Radius R
6 - 61
Positioning pass
Start
<180
point
Radius R
Central point
Central point
Radius R
<180
Start
point
180 < < 360
Radius R
Start point
Start point
Radius R
180 < < 360
31 -1).
Maximum arc
-1
31
Positioning path
End point
End point
Positioning path
Positioning path
Central point
End point
End point
Central point
Positioning path