Siemens SINUMERIK 840DE

Tool offsets
8.16 Additive offsets
Fundamentals
8-68 Programming Manual, 10.2004 Edition, 6FC5 298-7AB00-0BP1
Working without a T or D number
In the machine data, a default T and D number
• T number, and
• D number can be set,
that do not have to be reprogrammed and are effective after Power ON/Reset.
Example
All machining is performed with the same grinding wheel.
Machine data can be set to keep the current tool active after Reset; see /PGA/Programming
Guide Advanced.
8.16 Additive offsets
Function
Additive offsets are essentially process offsets which can be programmed during machining.
They refer to the geometrical data of a tool edge and are thus components of the tool edge
data.
The data of an additive offset are addressed via a DL number (DL: location-dependent;
offsets relative to relevant location) and enter tool offset via parameter display in the
Parameter area.
References: /BAD, BEM/ "Operator's Guide HMI Advanced, HMI Embedded" chapter
"Parameters"
8.16.1 Select offsets (via DL numbers)
Function
Setup value:
The setup value is defined optionally by the machine manufacturer in MD.
Same tool edge:
The same tool edge is used for 2 bearing seats (see example). Compensation can be made
for a location-dependent measurement error occurring as a result of machining forces, etc.