Mitsubishi Electric MELSEC iQ-R Series User Manual page 57

Positioning control method when the control unit is set to "degree"
■Absolute system (When the software stroke limit is invalid)
Positioning is carried out in the nearest direction to the designated address, using the current value as a reference. (This is
called "shortcut control".)
Ex.
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.
(1) Moved from 315° to 45°
315°
To designate the positioning direction (not carrying out the shortcut control), the shortcut control is invalidated and positioning
in a designated direction is carried out by "[Cd.40] ABS direction in degrees".
This function can be performed only when the software stroke limit is invalid. When the software stroke limit is valid, the error
"Illegal setting of ABS direction in unit of degree" (error code: 1AA5H) occurs and positioning is not started.
To designate the movement direction in the ABS control, a "1" or "2" is written to "[Cd.40] ABS direction in degrees" of the
buffer memory (initial value: 0).
The value written to "[Cd.40] ABS direction in degrees" becomes valid only when the positioning control is started.
In the continuous positioning control and continuous path control, the operation is continued with the setting set at the time of
start even if the setting is changed during the operation.
n: Axis No. - 1
Name
[Cd.40]
ABS direction in degrees
■Absolute system (When the software stroke limit is valid)
The positioning is carried out in a clockwise/counterclockwise direction depending on the software stroke limit range setting
method.
Because of this, positioning with "shortcut control" may not be possible.
Ex.
When the current value is moved from 0 to 315, positioning is carried out in the clockwise direction if the software stroke
limit lower limit value is 0 and the upper limit value is 345.
0
345.00000 °
315.00000 °
Positioning addresses are within a range of 0 to 359.99999.
Use the incremental system to carry out positioning of one rotation or more.
Downloaded from ManualsNet.com
(2) Moved from 45° to 315°
45° 315°
Function
The ABS movement direction in the unit of degree is
designated.
0: Shortcut (direction setting invalid)
1: ABS clockwise
2: ABS counterclockwise
°
Positioning is carried out in the clockwise direction.
search engine
45°
Buffer memory address
Axis 1 to axis 16
4350+100n
3 MAJOR POSITIONING CONTROL
3.1 Outline of Major Positioning Controls
3
Initial value
0
55