Special Functions | Adaptive Feed Control AFC (option 45)
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HEIDENHAIN | TNC 640 | Conversational Programming User's Manual | 10/2017
Log file
The control stores various pieces of information for each machining
step of a teach-in cut in the <name>.H.AFC2.DEP file. <name>
is the name of the NC program for which you have recorded the
teach-in cut. During adaptive control, the control updates the data
and performs various evaluations. The following data will be saved
in this table:
Column Function
NR
Number of the machining step
TOOL
Number or name of the tool with which the machin-
ing step was made
IDX
Index of the tool with which the machining step was
made
SNOM
Nominal spindle speed [rpm]
SDIFF
Maximum difference of the spindle speed in % of
the nominal speed
CTIME
Machining time (tool in effect)
FAVG
Average feed rate (tool in effect)
FMIN
Smallest occurring feed factor. The control shows
the value as a percentage of the programmed feed
rate
PMAX
Maximum recorded spindle power during machining.
The control shows the value as a percentage of the
spindle's rated power.
PREF
Reference load of the spindle. The control shows the
value as a percentage of the spindle's rated power.
OVLD
Overload reaction performed by the control:
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F: NC stop was conducted after the tool was
retracted
E: An error message was displayed
L: The current tool was locked
-: There was no overload reaction
BLOCK
Block number at which the machining step begins
During regulation, the control indicates the current
machining time as well as the resulting time saving in
percent. The control enters the results of the evaluation
between the key words total and saved in the last line
of the log file. Where the time balance is positive, the
percentage value is also positive.
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