Siemens SINUMERIK 840D sl Programming Manual page 334

Tool offsets
8.3 Online tool compensation (PUTFTOCF, PUTFTOC, FTOCON, FTOCOF)
Set parameters for FCTDEF function
The parameters are defined in a separate block:
FCTDEF(Polynomial_no., LLimit, ULimit,a0,a1,a2,a3)
The polynomial can be a 1st, 2nd or 3rd order 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 is always the reset setting.
• PUTFTOCF always acts non-modally, i.e. in the subsequent traversing block.
• The online tool offset can also be selected modally with FTOC. Please refer to Section
8-12
FTOCOF, the offset is no longer applied, however the complete value written with
PUTFTOC is corrected in the tool edge-specific offset data.
"Motion-synchronized actions" for more information.
Programming Manual, 03/2006 Edition, 6FC5398-2BP10-1BA0
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