Activation - Siemens SINUMERIK 840D sl Function Manual

Supplementary conditions
The maximum number of DL data sets of a cutting edge and the total number of sum offsets in
the NC are defined via machine data. The default value is zero, i.e. no sum offsets can be
programmed.
Activate the "monitoring function" to monitor a tool for wear or for "sum offset".
The additional sum/setup data sets use additional buffered memory. 8 bytes are required per
parameter.
A sum offset data set requires: 8 bytes * 9 parameters = 72 bytes
A setup data set requires an equal amount of memory. A certain number of bytes is also
required for internal management data.
2.15.3

Activation

Function
The function must be activated via the machine data:
MD18108 $MN_MM_NUM_SUMCORR (sum offsets in TO area).
System variables $TC_ECPx and $TC_SCPx and setup and sum offsets ("fine") defined via the
OPI interface can be activated in the part program.
This is done by programming the language command DL="number".
When a new D number is activated, either a new DL number is programmed, or the DL number
defined via the following machine data becomes active:
MD20272 $MC_SUMCORR_DEFAULT (basic setting of the sum offset without a program)
DL programming
The sum offset is always programmed relative to the active D number with the command:
DL = "n"
The sum offset "n" is added to the wear of the active D number.
Note
If you use "setup offset" and "sum offset fine", both compensations are combined and added to
the tool wear.
The sum offset is deselected with the command:
Tools
Function Manual, 06/2019, A5E47435126B AA
W1: Tool offset
2.15 Sum and setup offsets
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