Description Of Function - Siemens SINUMERIK 840D sl Function Manual

W1: Tool offset
2.15 Sum and setup offsets
2.15.2

Description of function

Sum offsets
Several sum offsets (DL numbers) can be defined per D number. In this way, for
example, workpiece location-dependent offset values can be determined and assigned to a
cutting edge. Sum offsets have the same effect as wear, i.e. they are added to the offset values
of the D number. The data is permanently assigned to a D number.
Settings
You can define the following settings via machine data:
● Activate sum offset
● Define maximum number of DL data sets to be created in NC
● Define maximum number 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 RESET is performed
– An operator panel 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.
Note
When tool management is active, a machine data item 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:
$TC_DP1
$TC_DP2
190
Tool type
Cutting edge position
Function Manual, 06/2019, A5E47435126B AA
Tools