
7.FEEDRATE CONTROL/ACCELERATION AND DECELERATION CONTROL B-63943EN-1/02
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7.1.7.3 Second feedrate override
Overview
These signals override the cutting feedrate after the cutting feedrate
has been overridden by first override *FV0 to *FV7.
A percentage from 0 to 254 % can be selected in steps of 1% as the
second feedrate override.
The second feedrate override is a optional function.
Signal
Second feedrate override signals *AFV0 to *AFV7<Gn013>
[Classification] Input signal
[Function] The cutting feedrate is multiplied by the second feedrate override.
These eight binary code signals correspond to the override values as
follows.
Override value=
∑
×
7
0=i
%|2| Vi
i
Vi=0 when *AFVi is "1" and
Vi=1 when *AFVi is "0"
These signals have the following weight.
*AFV0 : 1% *AFV1 : 2%
*AFV2 : 4% *AFV3 : 8%
*AFV4 : 16% *AFV5 : 32%
*AFV6 : 64% *AFV7 : 128 %
If all signals are "0" or "1", the override is regarded as 0%. The
override is selectable in steps over a range of 0 to 254%.
[Operation] In cutting feed during automatic operation, the actual feedrate is
obtained as follows.
Actual feedrate = (Specified speed) x (First override) x (Override
value specified by this signal)
Since the condition under which the first override is ignored and is set
to 1 remains valid, the second feedrate override is also assumed to
100%.
Signal address
#7 #6 #5 #4 #3 #2 #1 #0
Gn013 *AFV7 *AFV6 *AFV5 *AFV4 *AFV3 *AFV2 *AFV1 *AFV0