Tool Number And Tool Name: _Tnum And _Tname - Siemens SINUMERIK 840D sl Programming Manual

Parameter description
2.3 Description of the most important defining parameters
With some measuring variants, for example, in CYCLE998, positioning in another axis that
must be defined, also called offset axis can be performed between measurements in the
measuring axis. This must be defined in parameter _MA with offset axis/measuring axis. The
higher digit codes the offset axis, the lower digit the measuring axis, the tens digit is 0.
Example of _MA in CYCLE998:
_MA
2.3.3

Tool number and tool name: _TNUM and _TNAME

Parameter
The tool to be offset is entered during workpiece measurement in the parameters _TNUM
and _TNAME.
The parameter _TNAME is only relevant if tool management is active. Here it can be used as
an alternative to _TNUM. However, a programmed _TNUM >0 always has priority.
Example
• Without tool management:
_TNUM = 12
• With tool management:
_TNUM = 0
or
_TNUM = 13
In the case of replacement tools, the tool that was last used is corrected.
However, it is necessary that only one tool in a group be "active" at any one time. Otherwise,
the internal tool number of the tool used must be determined and assigned to _TNUM via the
system variable $P_TOOLNO during processing.
2-6
= 102
→ Offset axis
→ Measuring axis
the tool , T number 12, is corrected
_TNAME = "DRILL"
→ the tool called "DRILL" is corrected
_TNAME = "DRILL"
→ the tool with internal T number 13 is corrected
1 (abscissa)
2 (ordinate)
Programming Manual, Release 04/2006, 6FC5398-4BP10-0BA0
Measuring cycles