HEIDENHAIN TNC 620 User Manual page 476

14
Manual Operation and Setup
14.1 Switch-on, switch-off
14.1 Switch-on, switch-off
Switch-on
Switch-on and crossing over the reference points can
vary depending on the machine tool.
Refer to your machine manual.
Switch on the power supply for TNC and machine. The TNC then
displays the following dialog:
SYSTEM STARTUP
TNC is started
POWER INTERRUPTED
TNC message that the power was interrupted—
clear the message
COMPILE A PLC PROGRAM
The PLC program of the TNC is automatically compiled
RELAY EXT. DC VOLTAGE MISSING
Switch on external dc voltage. The TNC checks the
functioning of the EMERGENCY STOP circuit
MANUAL OPERATION
TRAVERSE REFERENCE POINTS
Cross the datums manually in the prescribed
sequence: For each axis press the NC START; or
Cross the datums in any sequence: Press and hold
the machine axis direction button for each axis
until the datum has been traversed
If your machine is equipped with absolute encoders,
you can leave out crossing the reference marks.
In such a case, the TNC is ready for operation
immediately after the machine control voltage is
switched on.
The TNC is now ready for operation in the Manual Operation
mode.
The reference points need only be crossed if the
machine axes are to be moved. If you intend only
to write, edit or test programs, you can select
the Programming or Test Run mode of operation
immediately after switching on the control voltage.
You can cross the reference points later by pressing
the PASS OVER REFERENCE soft key in the MANUAL
OPERATION mode.
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HEIDENHAIN | TNC 620 | Conversational Programming User's Manual | 10/2015