Siemens SINUMERIK 840D sl Function Manual page 1816

Detailed Description
2.2 Flat D number structure
2.2.2 Creating a new D number (compensation block)
Programming
Tool compensations can be programmed with system variables $TC_DP1 to $TC_DP25.
The contents have the same meaning as before.
The syntax changes: no T number is specified.
• "Flat D number" function active:
• "Flat D number" function inactive:
A D number can only be assigned once for each tool, i.e., each D number stands for exactly
one compensation data block.
A new data block is stored in the NCK memory when a D number that does not exist is
created for the first time.
The maximum number of D or offset data blocks (max. 600) is set via the machine data:
MD18100 $MN_MM_NUM_CUTTING_EDGES_IN_TOA (tool compensations in TO area).
Data backup
Data backup is carried out in the same format, i.e., a backup file created with the "Flat D
number" function cannot be loaded on the NCK of a control that has not activated the
function.
This also applies in reverse for transfer.
D range
1 - 99 999 999
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$TC_DPx[d] = value ;where x=parameter no., d=D number
i.e., data with this syntax can only be loaded to the NCK if the "Flat D number" function is
activated.
$TC_DPx[t][d] = value ;where t=T number, d=D number
Basic logic functions: Tool Offset (W1)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0