Siemens SINUMERIK 828D Function Manual page 1430

W1: Tool offset
18.2 Tool
A read operation returns CE=D. A write operation is ignored without an alarm message.
Note
The compensation values $TC_DP1 to $TC_DP25 of the active tool compensation can be
read with system variable $P_AD[n], where n=1 to 25. The CE cutting edge number of the
active compensation is returned with n=26.
Commands
When the maximum cutting edge number:
MD18105 $MN_MM_MAX_CUTTING_EDGE_NO (Max. value of the D numbers (DRAM))
is greater than the maximum number of cutting edges per tool:
MD18106 $MN_MM_MAX_CUTTING_EDGE_PERTOOL (Max. number of D numbers per tool (DRAM))
the following commands are available:
Command Significance
Checks the uniqueness of the available D numbers.
CHKDNO
The D numbers of all tools defined within a TO unit may not occur more than once.
No allowance is made for replacement tools.
Determines the D number for the cutting edge of a tool.
GETDNO
If no D number matching the input parameters exists, d=0.
If the D number is invalid, a value greater than 32000 is returned.
Sets or changes the D number of the CE cutting edge of tool T.
SETDNO
If there is no data block for the specified parameter, the value FALSE is returned.
Syntax errors generate an alarm. The D number cannot be set explicitly to 0.
Determines the associated T number for an absolute D number.
GETACTTD
There is not check for uniqueness. If several D numbers within a TO unit are the
same, the T number of the first tool found in the search is returned.
This command is not suitable for use with "flat" D numbers, because the value 1 is
always returned in this case (no T numbers in database).
Marks all D numbers of the TO unit as invalid.
DZERO
This command is used for support during retooling.
Compensation data sets tagged with this command are no longer verified by the
CHKDNO language command. These data sets can be accessed again by setting
the D number once more with SETDNO.
Note
If the maximum cutting edge number is smaller than the maximum number of cutting edges
per tool (MD18105 < MD18106), the language commands described do not affect the
system.
This relation is preset in the NCK as standard, in order to maintain compatibility with existing
applications.
The individual commands are described in detail in:
References:
/PG/ Programming Manual Fundamentals
1430
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
Basic Functions