Online Tool Offset (Putftocf, Fctdef, Putftoc, Ftocon, Ftocof) - Siemens SINUMERIK 840D sl Programming Manual

9.4 Online tool offset (PUTFTOCF, FCTDEF, PUTFTOC, FTOCON,
FTOCOF)
Function
When the "Online tool offset" function is active, a tool length offset resulting from the
machining is applied immediately on grinding tools.
An application example is CD dressing, where the grinding wheel is dressed in parallel to
machining.
The tool length offset can be changed from the machining channel or a parallel channel
(dresser channel).
The online tool offset is written using various functions dependent on the timing of the
dressing process:
● Continuous write, non-modal (
● Continuous write, modal:
● Discrete write (
Note
Online tool offset can be applied only to grinding tools.
Job Planning
Programming Manual, 03/2013, 6FC5398-2BP40-3BA1

9.4 Online tool offset (PUTFTOCF, FCTDEF, PUTFTOC, FTOCON, FTOCOF)

With , dressing is carried out at the same time as machining.
PUTFTOCF
The tool offset is changed continuously in the machining channel according to a
polynomial function of the first, second or third order, which must have been defined
previously with .
FCTDEF
is always non-modal; in other words, it takes effect in the subsequent traversing
PUTFTOCF
block.
PUTFTOC
With , dressing is not carried out at the same time as machining from a parallel
PUTFTOC
channel. The offset value specified with
destination channel.
)
PUTFTOCF
(see "Synchronized actions (Page 553)")
ID=1 DO FTOC
)
PUTFTOC
takes effect immediately in the
Tool offsets
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