G91 Incremental Value Command - Mitsubishi Electric Q Series Programming Manual

6 MOTION PROGRAMS FOR POSITIONING CONTROL

6.13.28 G91 Incremental value command

Code
Function Incremental value command
G 9
Format
[Explanation]
G91
1 X x Y y Z z
(1) In the incremental value command mode, the axes travel the distance of the
specified relative value from the start point (0) of the current position.
The positioning command set after execution of this command operates with the
incremental value from the current position.
(2) As this command is modal instruction, it is valid until the absolute value command
mode (G90) is commanded.
(3) The absolute value command mode is selected at a Motion program start.
[Example] G91 X100. Y100. ;
Y
150
100
50
Current position (50, 50)
50 100
Current position coordinates of X50, Y50
(4) Positioning data can be set by direct setting (numerical value) and indirect setting
(variable : #
The coordinates command is set as an incremental value command.
;
Locating position
Y
(150, 150)
150
100
50
X
150
Current position coordinates of X80, Y20
).
6 - 110
(180, 120)
Current position (80, 20)
50 100 150 200
X
(Unit: mm)