Siemens SINUMERIK 840D sl Function Manual page 1821

2.2.5 Programming M6
MD22550 and MD22560
The NC detects 1 master spindle per channel (via the spindle number, which can be set
using MD). Compensations and the M6 command (tool change) are only calculated in
reference to the master spindle.
Whether the tool change command is performed with an M function is defined via the
machine data:
MD22550 $MC_TOOL_CHANGE_MODE (new tool compensation with M function).
T is used as the tool preparation command.
The name of the M function for the tool change is defined via the machine data:
MD22560 $MC_TOOL_CHANGE_M_CODE (M function for tool change).
The default is M6. An address extension of M6 is interpreted as a spindle number.
Example
Two spindles are defined, spindle 1 and spindle 2, and the following applies:
MD20090 = 2
M6
M1 = 6
M2 = 6
2.2.6 Program test
MD20110
To have the active tool and the tool compensation included as follows, can be defined via the
machine data:
MD20110 $MC_RESET_MODE_MASK, Bit 3 (Definition of control default settings after
RESET/TP end).
Value
Bit 3
Prerequisite
The bits 0 and 6 must be set by the machine data:
MD20110 $MC_RESET_MODE_MASK, Bit 3 (Definition of control default settings after
RESET/TP end).
Basic logic functions: Tool Offset (W1)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
; Spindle no. 2 is the master spindle.
; Tool change desired, command refers implicitly to the master spindle
; No tool change, since spindle no. 2 is the master spindle
; Tool is changed, since spindle no. 2 is the master spindle
Significance
= 1 From the last test program to finish in test mode
= 0 From the last program to finish before activation of the program test
Detailed Description
2.2 Flat D number structure
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