Siemens SINUMERIK 828D Function Manual page 51

Activating and deactivating in the part program
The online tool length compensation is activated in the part program with
deactivated with
can be specified, e.g.
online tool length compensation is activated at the NC/PLC interface via the following
signals:
● DB21, ... DBX318.2 (
● DB21, ... DBX318.3 (
Behavior at reset and power on
The behavior at reset can be set via the machine data:
MD21190 $MC_TOFF_MODE, bit 0 = <value> (operation of tool offset in tool direction)
Value
0
1
This is always necessary in case of synchronized actions
$AA_TOFF[n]=<value>
Similarly, a transformation or a tool carrier that can be oriented, can be deselected after
reset via the following machine data:
MD20110 $MC_RESET_MODE_MASK (initial setting after reset)
The tool length compensation must also be deleted in this case.
If a tool length offset is to remain active extending beyond a reset, and a transformation
change or a change of the tool carrier that can be oriented takes place, then alarm 21665
"Channel %1 $AA_TOFF[ ] reset" is output. The tool length compensation is set to 0.
After power on, all tool length offsets are set to 0.
The function is deactivated after POWER ON.
Synchronized actions
Function Manual, 07/2012, 6FC5397-5BP40-3BA0
. When activating for the respective offset direction, an offset value
TOFFOF
TOFFON(Z,25)
TOFF
TOFF
Note
The online tool length compensation remains inactive until it is reselected using via
in the part program.
TOFFON
Meaning
The tool length offset $AA_TOFF is deselected at reset
The tool length offset $AA_TOFF is retained at reset
, as otherwise there would be an immediate tool length compensation.
2.3 System variables for synchronized actions
, which is then immediately traversed. The status of the
active)
movement active)
Detailed description
TOFFON
IDS=<number> DO
and
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