HEIDENHAIN TNC 122 User Manual - Manual (Page 15)

2 Working with the TNC 122 – First Steps
TNC 122 15
Working with the TNC 122 – First Steps
Before you begin
You must cross over the reference marks after every switch-on.
From the positions of the reference marks, the TNC automatically
re-establishes the relationship between axis slide positions and
display values that you last defined by setting the datum.
When you set a new datum point, the control automatically stores
the new relationship between axis positions and display values.
Switch on the TNC
2
Switch on the TNC and the machine tool. 0
⇒ ⇒ ⇒ ⇒ ⇒ 1
M E M O R Y T E S T
P O W E R I N T E R R U P T E D
CL
N O C O N T R O L V O L T G
Clear the TNC message indicating that the power was interrupted.
The TNC automatically checks its internal memory. Please wait...
I
Switch on the control voltage.
The TNC automatically checks the function of the EMERGENCY STOP button.
R E F T R A V E N T / N O E
Select reference mark evaluation. ENT
R E F M A R K X Y Z
Press and hold:
Y
Z
X
Cross the reference marks in any direction:
Press and hold the machine axis direction button until the moving
axis disappears from the screen.
Sequence in this example: X axis, Y axis, Z axis
The TNC 122 is now ready for operation in the
MANUAL OPERATION mode.
If you do not wish to cross over the reference marks:
⇒
⇒ ⇒ ⇒ ⇒ Answer the REF TRAV ENT/NOE dialog prompt with NO ENT
(this feature must be implemented by the machine tool
builder).