Mitsubishi Electric MELSEC iQ-R16MTCPU Programming Manual page 204

■Command for temporarily erasing compensation vectors
When basic machine coordinate system selection (G53) is commanded during compensation mode, compensation vectors
are temporarily erased, and compensation mode returns automatically afterwards. In this case, compensation cancel
operation is not performed, and immediately after the intersection vector the tool moves to a point without a vector (point
commanded by program). When returning to compensation mode, the tool moves directly to the intersection point.
■Blocks with no movement
: Program path,
• When commanded at compensation start
When there are four or more consecutive blocks with no movement, and when there are M commands that are prohibited
from being pre-read, compensation vector cannot be created.
Program
N1 G91 X50. Y130.
N2 G41 D10
N3 G04 X1000
N4 F100
N5 M500
N6 M3
N7 X50. Y-80.
N8 X100. Y-30.
*: N2 to N6 are blocks with no movement
• When commanded during compensation mode (less than four blocks without movement)
When there are less than four consecutive blocks with no movement during compensation mode, or there are no M
commands that are prohibited from being pre-read, an intersection vector is created as normal.
Program
N6 G91 X50. Y100.
N7 G04 P1000
N8 X200.
*: N7 is a block with no movement
• When commanded during compensation mode (there are four or more blocks with no movement)
When there are four or more consecutive blocks with no movement, and when there are M commands that are prohibited
from being pre-read, a compensation vector perpendicular to the end point of the previous block is created. In this case,
overcutting can occur.
Program
N6 G91 X50. Y100.
N7 G04 X1000
N8 F100
N9 M500
N10 M4
N11 X200.
*: N7 to N10 are blocks with no movement
6 AUXILIARY AND APPLIED FUNCTIONS
202
6.4 Tool Compensation Function
: Tool center path
Operation
Y
N2 to N6
100
N1
Operation
Y
100
Operation
Y
100
N7
N8
100 200
N7 N8
N6
100 200
N11
N7 to N10
N6
100 200
X
300
X
300
X
300