Mitsubishi Electric MELSEC-L LD75P User Manual page 358

(3) Positioning control method when the control unit is set to "degree"
(a) When the software stroke limit is invalid in absolute system
Positioning is carried out in the nearest direction to the designated address, using the current value as a
reference.
(This is called "shortcut control".)
(Examples)
1) Positioning is carried out in a clockwise direction when the current value is moved from 315 to 45.
2) Positioning is carried out in a counterclockwise direction when the current value is moved from 45 to 315.
• To specify the positioning direction (not carrying out the shortcut control), use "[Cd.40] ABS direction in
degrees" or "[Da.28] ABS direction in degrees". This function can be performed when the software stroke
limit is invalid. When the software stroke limit is valid, an error "Illegal setting of ABS direction in unit of
degree" (error code: 546) occurs and positioning is not started. In "[Cd.40] ABS direction in degrees" or
"[Da.28] ABS direction in degrees", the set value for the reference axis is applied to both the reference axis
and interpolation axis. Even if a unit other than degree is set for the reference axis, the setting of the
reference axis is applied to the interpolation axis as shown below (for 3-axis linear interpolation control
(ABS3)).
Axis
Reference axis
Interpolation axis 1
Interpolation axis 2
356
Moved from 315 to 45
45°
315°
Unit setting
pulse
degree
degree
Moved from 45 to 315
315°
[Cd.40] ABS direction in degrees
1: ABS clockwise


45°
Rotation direction of the axis
with degree setting
0
1: ABS clockwise
1: ABS clockwise