HEIDENHAIN iTNC 530 (340 49x-06) ISO programming - Manual (Page 374)

374 Programming: Special Functions
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Option (AFC)
Log file
In a teach-in cut, the TNC saves for each machining step relevant data
in the .H.AFC2.DEP file. is the name of the NC program
for which you have recorded the teach-in cut. During control, the TNC
updates the data and makes various evaluations. The following data
are to be saved in this table:
Column Function
NR Number of the machining step
TOOL Number or name of the tool with which the machining
step was made
IDX Index of the tool with which the machining step was
made
SNOM Nominal spindle speed [rpm]
SDIF Maximum difference of the spindle speed in % of the
nominal speed
LTIME Machining time for the teach-in cut
CTIME Machining time for the control cut
TDIFF Time difference in % between the machining time
during teach-in and control
PMAX Maximum recorded spindle power during machining.
The TNC displays the value in percent with respect to
the rated power of the spindle.
PREF Reference load of the spindle. The TNC shows the
value as a percent of the spindle’s rated power.
FMIN Smallest occurring feed factor. The TNC shows the
value as a percentage of the programmed feed rate.
OVLD Reaction by the TNC to overload:
„ M : A macro defined by the machine tool builder has
been run
„ S : Immediate NC stop was conducted
„ F : NC stop was conducted after the tool was been
retracted
„ E : An error message was displayed
„ - : There was no overload reaction
BLOCK Block number at which the machining step begins