Siemens SINUMERIK 840D sl Function Manual page 29

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 offset 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
If the maximum cutting edge number is higher than the maximum number of cutting edges for
each tool, then the commands listed in the following table, are available
● (MD18105 $MN_MM_MAX_CUTTING_EDGE_NO) > (MD18106
$MN_MM_MAX_CUTTING_EDGE_PERTOOL)
Command
CHKDNO
GETDNO
SETDNO
GETACTTD
DZERO
Note
If the maximum cutting edge number is less than the maximum number of cutting edges for
each tool, then the commands listed in the table are ineffective. This default setting is in the
system for reasons of compatibility.
The individual commands are described in detail in:
Further information
Programming Manual Fundamentals
Tools
Function Manual, 06/2019, A5E47435126B AA
Meaning
Checks the uniqueness of the available D numbers;
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.
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.
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.
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.
Marks all D numbers of the TO unit as invalid;
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.
W1: Tool offset
2.3 Tool offset memory
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