Free Assignment Of D Numbers - Siemens SINUMERIK 840D sl Function Manual

Two spindles are considered. Spindle 1 is the master spindle. M6 was defined as the tool
change signal.
T1 = 5
M1 = 6
T2 = 50
M2 = 6
D4
● If tool management is active, D4 refers to tool "5".
T2=50 defines the tool for the secondary spindle, whose tool does not influence the path
compensation. The path is determined exclusively by the tool programmed for the master
spindle.
● D4 refers to tool "50" without active tool management and with the machine data:
MD20096 $MC_T_M_ADDRESS_EXT_IS_SPINO = FALSE (significance of address
extension for T, M tool change).
The address extensions of neither T nor M are evaluated in the NC.
Each tool change command defines a new path compensation.
● D4 refers to tool "5" (as when tool management is active) without active tool management
and with the machine data:
MD20096 $MC_T_M_ADDRESS_EXT_IS_SPINO = TRUE.
Address extension 1 (T1= ..., M1= ...) addresses the master spindle.
Note
Previously, when tool management was not activated, each tool change command
(programmed with T or M) caused the tool offset to be recalculated in the path. The address
extension is not defined further by this operation. The significance of the extension is
defined by the user (in the PLC user program).
2.3.4

Free assignment of D numbers

"Relative" D numbers
In the NC it is possible to manage the D numbers as "relative" D numbers for the tool offset data
sets. The corresponding D numbers are assigned to each T number.
Tools
Function Manual, 06/2019, A5E47435126B AA
W1: Tool offset
2.3 Tool offset memory
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