July 2013 8.1 Display and operation 1229
The DELETE LINE soft key is also available in the Programming and Editing
mode of operation. However, only use this function if you specifically want to
delete an incorrectly created line from the <NAME>.H.AFC.DEP table for
control settings.
This may be reasonable when lines were created in the table, which would not
have been created during normal program run. Such lines might, for example,
be produced when program run is canceled, or by a GOTO command to a
previous beginning of a cut. You must confirm deletion in a confirmation
request, because deleting a line moves up the following lines with their control
parameters.
Protocol file with the actual data of the control: <name>.H.AFC2.DEP
The iTNC stores various pieces of information for each machining step of a
teach-in cut in this file. During control, the iTNC updates the data and makes
various evaluations.
Call the <name>.H.AFC2.DEP file via the EVALUATE TABLE soft key.
Please note that the control parameters will be assigned to the wrong cuts
if you delete lines incorrectly.
If you are not sure which line may be deleted, then perform the learning
phase anew for the complete NC program.
Column Function
NR Number of the machining step
TOOL Number of the tool with which the machining section was
performed (cannot be edited)
IDX Index of the tool with which the machining step was made (not
editable)
SNOM Nominal spindle speed [rpm]
SDIF Maximum difference of the spindle speed in % of the nominal
speed
CTIME Machining time for the control cut
FAVG Mean value of the feed rate during cutting in %.
This allows you to determine the time saved during cutting.
If the FAVG is more than 100 %, time was saved because 100
% is defined by the teach-in cut.
If Learning/Controlling is mixed, the average feed rate can be
used to calculate the real time difference between learning
and controlling. If the average feed rate is clearly below 100 %,
this is also a meaningful indication of tool wear.
At the end of the program the total time saving calculated is
entered in % into the last line next to the total machining time.
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