HEIDENHAIN TNC 335 Technical Manual - Manual (Page 141)

4-44
TNC 360 2 Reference Marks 8/95
Sequence "Automatic passing over reference marks" (press the external START key).
Press the external START key
Trip dog
"Reference end position"
closed?
Machine traverse
in direction from
MP1320.x
Machine traverses in
inverted direction from
MP1320.x
Reference mark is passed over
Is the machine
outside the software
limit switch range?
Machine moves to
software limit switch
Machine stops
No Yes
Yes
No
Yes
No
Trip dog
"Reference end position" is
closed before reference mark
is passed over