LS Industrial Systems XGT Series - Function Overview of Positioning Module; Position Control

Chapter 1 Overview
1-5
1.4 Function overview of positioning module
Describe Representative functions of positioning module (Linear Interpolation, Circular Interpolation & Stop) briefly. For
detail, refer to CH.9
1.4.1 Position Control
Execute positioning control to the designated axis during the movement from starting position (current position) to
goal position(the position to move to).
(1) Control by Absolute coordinates
Execute positioning control from starting position to goal position that positioning data designated
Positioning control is executed by the position(origin position) homing designated.
Moving direction is decided by starting position and goal position.
■Starting Position < Goal Position : Forward Positioning Operation
■Starting Position > Goal Position : Reverse Positioning Operation
[ Example ]
■Starting Position : 1000
■Goal Position : 8000
Value of Forward movement is 7000 (7000=8000-1000)
(2) Control by Incremental Coordinates
Execute positioning control from starting position as much as goal movement value.
The difference from absolute coordinates control is that the value goal position designated is movement value, not
position value.
Moving direction depends on movement value is positive or negative.
■Positive value(+ or 0) : Positioning operation with forward direction
■Negative value(-) : Positioning operation with reverse direction