Siemens SINUMERIK 840D sl Programming Manual page 85

TOFF:
<GeoAx>:
TOFFR:
TOFFLR:
<Value>:
Examples
Example 1: Positive tool length offset
The active tool is a drill with length L1 = 100 mm.
The active plane is G17. This means that the drill points in the Z direction.
The effective drill length is to be increased by 1 mm. The following variants are available for
programming this tool length offset:
● TOFFL=1
● TOFFL[1]=1
● TOFF[Z]=1
Example 2: Negative tool length offset
The active tool is a drill with length L1 = 100 mm.
The active plane is G18. This means that the drill points in the Y direction.
The effective drill length is to be decreased by 1 mm. The following variants are available for
programming this tool length offset:
● TOFFL=-1
● TOFFL[1]=-1
● TOFF[Y]=1
NC programming
Programming Manual, 12/2019, 6FC5398-2EP40-0BA0
Correction of the tool length in the component parallel to the specified geometry axis
TOFF is applied in the direction of the tool length component which is effective with non-
rotated tool (orientable tool carrier or orientation transformation) parallel to the geometry
axis specified in the index.
Note:
A frame does not influence the assignment of the programmed values to the tool length
components. This means that the workpiece coordinate system (WCS) is not used to
assign the tool length components to the geometry axes, but rather the tool coordinate
system in the basic tool position.
Identifier of the geometry axis
Correction of the effective tool radius
TOFFR changes the effective tool radius with active tool radius compensation by the
programmed offset value.
Correction of the effective tool length in the component L1 and the effective tool radius
Note:
For tools with corner rounding (types 111, 121, 131 and 156), TOFFLR also corrects the
corner radius.
Offset value
Type: REAL
Fundamentals
2.5 Tool offsets
85