Supplementary Conditions - Siemens SINUMERIK 840D sl Function Manual

Syntax
FTOCON
...
FTOCOF
Meaning
FTOCON:
FTOCOF:
18.2.3

Supplementary conditions

DRF offset
The online tool offset is superimposed on the programmed axis motion, allowing for the defined
limit values (e.g. velocity).
If a DRF offset and online offset are active simultaneously for an axis, the DRF offset is
considered first.
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.
Extended Functions
Function Manual, 10/2015, 6FC5397-1BP40-5BA3
W4: Grinding-specific tool offset and tool monitoring
Activate online tool offset
The command must be programmed in the channel in which the online tool offset
is to be activated.
Deactivate online tool offset
The command must be programmed in the channel in which the online tool offset
is to be deactivated.
Note:
On FTOCOF, the axis does not move further out for the tool offset. However, the
value calculated with PUTFTOC/PUTFTOCF remains in the cutting-specific offset
data.
To finally deactivate the online tool offset, the tool (T...) must again be selected/
deselected after FTOCOF.
18.2 Online tool offset
861