Description Of Function - Siemens SINUMERIK 840D sl Function Manual

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used in the transformation. Unlike the case of a toolholder with orientation capability, the wear

values are thus always included in the transformation irrespective of the G code of group 56.

Description of function

Several sum offsets (DL numbers) can be defined per D number. This allows you to determine,

for example, workpiecelocationdependent compensation values and assign them to a cutting

edge. Sum offsets have the same effect as wear, i.e., they are added to the compensation

values of the D number. The data are permanently assigned to a D number.

You can define the following settings in machine data:

● Activate sum offset

● Define maximum quantity of DL data sets to be created in NCK memory

● Define maximum quantity of DL numbers to be assigned to a D number

● Define whether the sum offsets (fine/coarse) are to be saved during data backup

● Define the sum offset to be activated, if:

– A new cutting edge compensation is activated

– An operator panel front RESET is performed

– An operator panel front START is performed

– The end of the program has been reached

The name is oriented to the logic of the corresponding machine data for tools and cutting edges.

The "setup offset" and "sum offset fine" can be read and written via system variables and

corresponding OPI services.

When tool management is active, a machine data can be used to define whether the sum offset

of a tool activated during a programmed tool change remains unchanged or is set to zero.

Summary of compensation parameters $TC_DPx

The following general system variables were previously defined for describing a cutting edge:

Basic Functions

Function Manual, 01/2015, 6FC5397-0BP40-5BA2

Length of cutting edge

W1: Tool offset

18.11 Sum offsets and setup offsets

Sinumerik 828d Sinumerik 840de sl