Mitsubishi Electric MELDAS C6 Programming Manual page 245

13. Program Support Functions
Precautions
C CAUTION
Turn the mirror image ON and OFF at the mirror image center.
If mirror image is canceled at a point other than the mirror center, the absolute value and machine
position will deviate as shown below. (In this state, execute the absolute value command
(positioning with G90 mode), or execute reference point return with G28 or G30 to continue the
operation.) The mirror center is set with an absolute value, so if the mirror center is commanded
again in this state, the center may be set to an unpredictable position.
Cancel the mirror at the mirror center or position with the absolute value command after canceling.
Absolute value (position
commanded in program)
Combination with other functions
(1) Combination with diameter compensation
The mirror image (G51.1) will be processed after the diameter compensation (G41, G42) is
applied, so the following type of cutting will take place.
Programmed path
When only diameter
compensation is applied
13.6 G command mirror image
Machine position
Mirror center
Mirror center
237
When moved with the incremental
command after mirror cancel
Issue mirror cancel command here
Issue mirror axis command here
When only mirror image
is applied
When both mirror image and
diameter compensation are applied