Siemens sinumerik 840d Programming Manual page 272

Tool Offsets
8
8.3 Online tool offset PUTFTOCF, PUTFTOC, FTOCON, FTOCOF
840D
NCU 572
NCU 573
Set parameters for FCTDEF function
The parameters are defined in a separate block:
FCTDEF(Polynomial_NO., LLimit, ULimit,a
The polynomial can be a 1st, 2nd or 3rd degree
polynomial.
The limit identifies the limit values (LLimit = lower
limit, ULimit = upper limit).
Example:
Straight line (y = a0 + a1x) with gradient 1
FCTDEF(1, -1000, 1000, -$AA_IW[X], 1)
Write online offset discretely: PUTFTOC
This command can be used to write an offset value
once. The offset is activated immediately on the
target channel.
Application of PUTFTOC:
The grinding wheel is dressed from a parallel
channel, but not at the same time as machining.
PUTFTOC(Value, Length1_2_3, Channel,
Spindle)
The online tool offset for the specified length 1, 2 or
3 is changed by the specified value, i.e. the value is
added to the wear parameter.
Include online tool offset: FTOCON, FTOCOF
The target channel can only receive online tool
offsets when FTOCON is active.
• FTOCON must be written in the channel on
which the offset is to be activated.
With FTOCOF, the offset is no longer applied,
however the complete value written with
PUTFTOC is corrected in the tool edge-specific
offset data.
• FTOCOF is always the reset setting.
• PUTFTOCF always acts on the subsequent
traversing block.
• The online tool offset can also be selected
modally with FTOC. Please refer to Section
"Motion-synchronized actions" for more
information.
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840Di
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SINUMERIK 840D/840Di/810D/FM-NC Programming Guide Advanced (PGA) − 04.00 Edition
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