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)
7.10
Function
Use the system variable $AA_TOFF[ ] 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 the index. 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
Machine manufacturer
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
N.. TRAORI
N.. TOFFON(X,25)
N.. WHEN TRUE DO $AA_TOFF[tool direction] in synchronized actions
For more information about programming online tool length compensation in motion-
synchronous actions, see "Actions in synchronized actions".
Significance
TOFFON
TOFFOF
X, Y, Z
514
Tool Offset ON (activate online tool length compensation)
When activating, an offset value can be specified for the
relevant direction of compensation and this is immediately
recovered.
Tool Offset ON (reset online tool length compensation)
The relevant compensation values are reset and a
preprocessing stop is initiated.
Direction of compensation for the offset value indicated for
TOFFON
Programming Manual, 06/2009, 6FC5398-2BP20-0BA0
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