Siemens SINUMERIK 840D sl Function Manual page 1803

2.1.3 Calculating the tool compensation
D No.
The D no. is sufficient for calculating the tool compensations (can be set via MD).
Programming
The above compensation block is to be calculated in the NC.
Part program call:
...
D
n
2.1.4 Address extension for NC addresses T and M
MD20096
Whether also with tool management not activated, the address extension of T and M is to be
interpreted as spindle number, can be set through the machine data:
MD20096 $MC_T_M_ADDRESS_EXT_IS_SPINO (spindle number as address extension).
The same rules then apply to the reference between the D number and T number as when
the "Tool management" function is active.
Basic logic functions: Tool Offset (W1)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
Detailed Description
2.1 Tool
15