Siemens SINUMERIK 828D Function Manual page 399

M6: Value range of the address extension:
6)
- without tool management: 0 ... 99
- with tool management: 0 ... maximum spindle number
0: to be replaced by the value of the master spindle number or master tool holder
If tool management is active, the auxiliary function M6 "Tool change" can only be
7)
programmed once in a part program block, irrespective the address extensions that are
programmed.
Maximum number of auxiliary functions per part program block.
8)
Basic Functions
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
H2: Auxiliary function outputs to PLC
8.1 Brief description
399