HEIDENHAIN TNC 640 - Page 712

Turning | Turning program functions (option 50)
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HEIDENHAIN | TNC 640 | Conversational Programming User's Manual | 10/2017
Column Function
SENS
Sensitivity of the feed control
Input value in turning mode: 0 or 1
SENS 1: Pmin is evaluated
SENS 0: Pmin is not evaluated
PLC
Value that the control is to transfer to the PLC at
the beginning of a machining step. The machine
tool builder defines the function, so refer to your
machine manual.
Defining the monitoring setting for turning tools
Enter a separate monitoring setting for each turning tool. Proceed
as follows:
To open the tool table TOOL.T
Find turning tool
Enter the appropriate setting in the AFC column
If you are using with the extended tool management, you can also
enter the monitoring settings directly in the Tool form.
Performing a teach-in cut
In turning mode, the teach-in phase has to be run completely. The
control generates an error message if you enter TIME or DIST for
the AFC CUT BEGIN function.
Canceling with EXIT LEARNING is not permitted.
You cannot reset the reference load, the PREF RESET soft key is
dimmed.
Further information: "Recording a teach-in cut", page 541
Activating and deactivating AFC
You activate the feed control as in milling mode.
Further information: "Activating and deactivating AFC", page 546
Further information: "Log file", page 548
Monitoring tool wear and tool breakage
In turning mode, the control can check for tool wear and tool
breakage.
A tool breakage leads to a sudden load decrease. If you want the
control to monitor the load decrease, too, enter the value 1 in the
SENS column.
Further information: "Tool wear monitoring", page 549
Further information: "Tool load monitoring", page 549