Online Tool Length Compensation (Toffon, Toffof) - Siemens Sinumerik 840D sl Programming Manual

Tool offsets

7.10 Online tool length compensation (TOFFON, TOFFOF)

7.10 Online tool length compensation (TOFFON, TOFFOF)
Function
Use the system variable $AA_TOFF[<n> ] to overlay the effective tool lengths in accordance
with the three tool directions three-dimensionally in real time.
The three geometry axis identifiers are used as index <n>. This defines the number of active
directions of compensation by the geometry axes active at the same time.
All compensations can be active at the same time.
The online tool length compensation function can be used for:
• orientation transformation TRAORI
• orientable toolholder TCARR
Note
Online tool length compensation is an option, which must be enabled in advance. This
function is only practical in conjunction with an active orientation transformation or an
active orientable toolholder.
Syntax
TRAORI
TOFFON(<compensation direction>[,<offset value>])
WHEN TRUE DO $AA_TOFF[<compensation direction>]
...
TOFFOF(<compensation direction>)
For more information about programming online tool length compensation in motion-
synchronous actions, see "Online tool length compensation ($AA_TOFF) [Page 603]".
Meaning
TOFFON:
TOFFOF:
454
Activate online tool length compensation
<compensation
direction>:
<offset value>:
Reset online tool length compensation
The compensation values in the specified compensation direction are reset
and a pre-processing stop is initiated.
; In synchronized actions.
Tool direction (X, Y, Z), in which the online tool
length compensation should be active.
When activating, an offset value can be
specified for the relevant direction of
compensation and this is immediately
recovered.
Programming Manual, 02/2011, 6FC5398-2BP40-1BA0
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