Correcting Setup And Additive Offset In Workpiece Measurement: _Dlnum - Siemens SINUMERIK 840D sl Programming Manual

2.3.6

Correcting setup and additive offset in workpiece measurement: _DLNUM

Parameter
Setup and additive offsets are assigned to the tool and a D number. Each D number can be
assigned up to 6 setup and additive offsets using DL numbers in the program. If DL=0, no
setup or additive offset is activated.
The existence or number of setup or additive offset is set in the machine data.
References: /FB1/, W1, "Tool Compensation"
From measuring cycles SW 6.3 onwards, it is possible to correct a selected setup or additive
offset in the measuring cycles when measuring workpieces with automatic tool offset using
parameters _TNUM and _TNAME, _KNUM (D-number coded) and additional parameter
_DLNUM.
_DLNUM is an integer. The value range is 0 to 6. This variable need only be defined by the
user if the corresponding digit is also programmed in variable _KNUM.
Two channel-oriented bits are available for selecting additive and setup offsets (see Section
Data description).
The measuring cycles for workpiece measurement with automatic tool offset use channel bit
_CHBIT[6] for selecting length and radius offsets in wear or geometry.
0:
1:
_CHBIT[6] is also used for correcting setup and additive offsets:
0:
1:
Additionally _CHBIT[8]:
0:
1:
Measuring cycles
Programming Manual, Release 04/2006, 6FC5398-4BP10-0BA0
The offset value is added to the existing wear.
Geometry(new) = geometry (old) + wear (old) + offset value,
wear (new) = 0
The offset value is added to the existing additive offset.
Setup offset (new) = setup offset (old) + additive offset (old) offset value, additive
offset (new) = 0
Correct additive/setup offset according to _CHBIT[6].
The offset value is added to the existing setup offset, regardless of _CHBIT[6].
2.3 Description of the most important defining parameters
Parameter description
2-11