Tool T (Turning); Tool Offset Number D (Turning) - Siemens SINUMERIK 808D ADVANCED Programming And Operating Manual

See the following illustration for machining a workpiece with different tool dimensions:
8.11.2

Tool T (turning)

Functionality
The tool selection takes place when the T word is programmed. Whether this is a tool change or only a preselection is
defined in the machine data:
● A tool change (tool call) takes place directly with the T word (e.g. typical for tool turrets on turning machines)
or
● The change takes place after the preselection with the T word by an additional instruction M6.
Note:
If a certain tool was activated, it remains stored as an active tool even beyond the end of the program and after switching
off/switching on the control system.
If you change a tool manually, input the change also in the control system so that the control system 'knows' the correct
tool. For example, you can start a block with the new T word in MDA mode.
Programming example
Tool change without M6
N10 T1
N20 T3
N30 T2
N40 T6
N50 T7
N60 T5
N70 T588
N80 M30
The control system can store a maximum of 64 tools.
8.11.3

Tool offset number D (turning)

Functionality
It is possible to assign 1 to 9 data fields with different tool offset blocks (for multiple cutting edges) to a specific tool. If a
special cutting edge is required, then it can be programmed using D and the appropriate number.
If a D word is not written, D1 is automatically effective.
If D0 is programmed, the offsets for the tool are ineffective.
Programming
D... ; Tool offset number: 1 ... 9, D0: No offsets active!
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Programming and Operating Manual (Turning)
6FC5398-5DP10-0BA2, 06/2015