Programming principles
1.6 Tool and tool offset
Turning Part 2: Programming (Siemens instructions)
72 Programming and Operating Manual, 05/2012, 6FC5398-5DP10-0BA0
1.6 Tool and tool offset
1.6.1 General information (turning)
Functionality
During program creation for the workpiece machining, you do not have to take tool lengths or
cutting radius into consideration. You program the workpiece dimensions directly, e.g.
according to the drawing.
The tool data must be entered separately in a special data area.
In the program, you will merely call the required tool with its offset data. The control system
performs the required path compensations based on this data to create the described
workpiece.
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Figure 1-36 Machining a workpiece with different tool dimensions
1.6.2 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.
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