Manual

Tool Tip Radius Compensation (TTRC)
Function
Chapter 21
21-4
This table highlights the differences between the two types:
Type of Move Type A Type B
Entry Move Into
TTRC
-- The tooltakes theshortest possible
path to its offset position.
-- The tool stays at least oneradius away
from thestart-point of the next blockat
all times.
-- Extra motion blocks canbe generated
to attempt to prevent gouging of the
part as mayoccur in Type A.
Tool
Path
-- Same asType B. -- Same asType A.
Exit Move From
TTRC
-- The tooltakes theshortest path tothe
end-point of the exit move for both
inside and outside corners.
-- The tooltakes theshortest path tothe
end-point of exit move for inside
corners only.
-- For outside corners, thetool stays at
least one radius away from the
end-point.
Your system installer determines whether to use type A or type B by a
control in AMP.
These G-codes are used for TTRC:
G-code: TTRC, :
G41 left
G42 right
G40 cancel
Left or right is defined as offsetting the tool to the left or right of the
programmed cutting path when facing the direction of cutter motion.
Important: If you set a negative value in the offset tables as the tool
radius, this reverses compensation direction (tool left or right) for the G41
and G42 codes. G41 and G42 are also reversed during the mirroring
operation. See chapter 14.
All of these G-codes are modal and belong to the same modal group.
21.1
Programming TTRC