Programming instructions

5-34
Tool Corrections NC Programming 17VRS
DOK-MTC200-NC**PRO*V17-ANW1-EN-P
Tool Path Compensation, Left of Workpiece Contour 'G41'
Tool path compensation, left of workpiece contour is activated by the G41
function command.
When tool path compensation on the left of the contour is active, the tool
center point moves on the left of the programmed contour when viewed in
the direction of movement. It moves on a path which is parallel to the
contour and which is offset from this contour by the tool radius value.
If G41 is programmed after an active G40 or G42, the next anticipated
move is a linear move in the process plane. The axis values of both main
axis must be programmed in the NC-block in order for the tool path com-
pensation to be reestablished or changed.
•
G41 tool path compensation, left of workpiece contour remains mo-
dally active until it is canceled by G90 or G42 or until a reset is per-
formed at the end of the program (RET) or BST, M02, M30.
•
When tool path compensation is active, no more than two NC-blocks
can be programmed without programming a move in the current proc-
ess plane. If more than two NC-blocks are programmed without a
move, the tool path compensation is canceled with G40.
CAUTION
If an attempt is made to perform the tool path compen-
sation by means of a circular movement, an error will be
issued:
“G41/G42 activated with circular interpo-
lation”
and the NC-program will terminate.
Tool Path Compensation, Right of Workpiece Contour 'G42'
Tool path compensation, right of workpiece contour is activated by the
G42 function command.
When tool path compensation on the right of the contour is active, the tool
center point moves on the right of the programmed contour when viewed
in the direction of movement. It moves on a path which is parallel to the
contour and which is offset from this contour by the tool radius value.
If an active tool path compensation (G41 or G42) is canceled by a G41,
the next anticipated move is a linear move on the process plane. The axis
values of both main axis must be programmed in the NC-block so that the
tool path compensation can be removed.
•
G42 tool path compensation, right of workpiece contour remains mo-
dally active until it is canceled by G40 or G41 or until a reset is per-
formed at the end of the program (RET) or BST, M02, M30.
•
When tool path compensation is active, no more than two NC-blocks
can be programmed without programming a move in the current proc-
ess plane. If more than two NC-blocks are programmed without a
move, the tool path compensation is canceled with G40.
CAUTION
If an attempt is made to perform the tool path compen-
sation by means of a circular movement, an error will be
issued:
“G41/G42 activated with circular interpo-
lation”
and the NC-program will terminate.