Siemens SINUMERIK 840D sl Function Manual page 294

W4: Grinding-specific tool offset and tool monitoring
4.2 Online tool offset
Acceleration margin
The active online tool offset is traversed through at JOG velocity, allowing for the maximum
acceleration.
In case of FTOCON the following channel-specific machine data is taken into account:
MD20610 $MC_ADD_MOVE_ACCEL_RESERVE
An acceleration margin can thus be reserved for the movement which means that the overlaid
movement can be executed immediately.
Reference point approach
The valid online offset is deleted on reference point approach with G74.
Tool change
In cases where FTOCON has been active since the last tool or cutting edge change,
preprocessing stop with resynchronization is initiated in the control when a tool is changed.
Cutting edge changes can be implemented without preprocessing stop.
Note
Tool changes can be executed in conjunction with the online tool offset through the selection
of T numbers.
Tool changes with M6 cannot be executed in conjunction with the online tool offset function.
Machining plane and transformation
● FTOCON can be used only in conjunction with the "Inclined axis" transformation.
● It is not possible to change transformations or planes (e.g. G17 to G18) when FTOCON is
active, except in the FTOCOF state.
Resets and operating mode changes
● When online offset is active, NC-Stop and program end with M2/M30 are delayed until the
amount of compensation has been traversed.
● The online tool offset is immediately deselected in response to NC-Reset.
● Online tool offsets can be activated in AUTOMATIC mode and when the program is active.
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Function Manual, 06/2019, A5E47435126B AA
Tools