Mitsubishi Electric MELSEC iQ-R16MTCPU Programming Manual page 201

Select tool radius or diameter compensation
The tool radius compensation can be specified as tool diameter in [Motion Control Parameter][G-code Control
Parameter][G-code Control Work Parameter]"Tool Radius Compensation""Select Tool Radius or Diameter
Compensation". When diameter compensation is set, the compensation amount set to the commanded tool number is
recognized as diameter compensation, and this is converted to a radius compensation amount when compensating.
Precautions for the commands and operations of tool radius compensation
■Changing compensation direction during tool radius compensation
• The compensation direction is determined by the tool radius compensation command (G41, G42) and the sign of the
compensation amount. The compensation direction can be changed if, during compensation mode, the tool radius
compensation cancel command is not made and the tool radius compensation command is changed.
Tool radius compensation
command
G41
G42
• Changes in the compensation amount are typically made in the tool radius compensation cancel mode when selecting a
different tool. However, when change is made during compensation mode, the vector at the end point of the block uses the
compensation amount specified in that block for calculations.
: Program path, : Tool center path
• LinearLinear
• When there is intersection (A) at the change of compensation direction
Compensation
G41
• When there is no intersection at the change of compensation direction
G41
Compensation
Compensation
• LinearArc
• When there is intersection (A) at the change of compensation direction
G41
A
Compensation
• When there is no intersection at the change of compensation direction
G41
Compensation
Compensation amount
Sign(+)
Left compensation
Right compensation
A
Compensation
G41 G42
G41 G42
Compensation
G42 G41 G41
Compensation
A
Arc center Compensation
G42 G41 G41
Compensation
Arc center
Compensation
Sign(-)
Right compensation
Left compensation
Compensation
G42
Compensation
Arc center
G42
Arc center
Compensation
6 AUXILIARY AND APPLIED FUNCTIONS
6.4 Tool Compensation Function
6
199