HEIDENHAIN TNC 426 (280 476) - Manual (Page 43)

16 2 Manual Operation and Setup
2.1 S
w
itc
h
-on, S
w
itc
h
-of
f
2.1 Switch-on, Switch-off
Switch-on
Switch on the power supply for control and machine. The TNC
automatically initiates the following dialog
The TNC memory is automatically checked.
TNC message that the power was interrupted —
clear the message.
The PLC program of the TNC is automatically compiled.
Switch on external dc voltage. The TNC checks the
functioning of the EMERGENCY STOP circuit.
Cross the reference points manually in the displayed
sequence: For each axis press the machine START
button, or
Cross the reference points in any sequence: Press
and hold the machine axis direction button for each
axis until the reference point has been traversed.
Switch-on and traversing the reference points can vary
depending on the individual machine tool. Refer to your
machine manual.
MEMORY TEST
POWER INTERRUPTED
TRANSLATE PLC PROGRAM
RELAY EXT. DC VOLTAGE MISSING
MANUAL OPERATION
TRAVERSE REFERENCE POINTS