Siemens SINUMERIK 828D Commissioning Manual page 302

Tool management
9.4 PLC Program Blocks
Program L6 is called with M6 (basic setting)
Signal description:
①
②
③
Note
MD20270, MD20310:
The response of the interface in DB43xx.DBB1 and of NC block processing is affected by the
setting in MD20270: $MC_CUTTING_EDGE_DEFAULT and MD20310:
$MC_TOOL_MANAGEMENT_MASK bit 5, 6, 7, and 8.
This sequence described here corresponds to the presetting of the machine data.
Sequence of the tool management without block splitting (machine data setting milling)
Txx Myy ;
Myy is the setting from MD22560: $MC_TOOL_CHANGE_M_CODE
This type of programming is not recommended!
288
The PLC user program receives a new job. The job "prepare tool change" and the job "execute
tool change" are issued one after the other. Txx and M206 have been programmed in separate
NC blocks. Only the job "prepare tool change" is present in the interface in DB43xx. The job
"execute tool change" is output only after the end acknowledgment for the job for tool prepara‐
tion.
Bit DB43xx.DBX0.0 (job) is reset with acknowledgment of the "prepare tool change" job. If the
change command (M206) has already run through the NC main run, the new job is immediately
output at the interface.
The "execute tool change" job is acknowledged as a normal job. The end acknowledgment OK
is returned and the bit for the job is simultaneously reset.
The description of the job ("execute tool change" and "prepare tool change") is not reset. Byte
1 of DB43xx is not overwritten until the next job.
Commissioning Manual, 10/2015, 6FC5397-3DP40-5BA3
CNC commissioning