HEIDENHAIN TNC 335 Technical Manual - Manual (Page 137)

4-40
TNC 360 2 Reference Marks 8/95
Sequence "Automatic passing over reference marks" (press the external START key).
MP1350.x = 3
Press the external START key
Trip dog
"Reference end
position"
closed?
Machine traverse
in direction from
MP1320
Machine traverses in
inverted direction from
MP1320
Two consecutive reference marks are 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 consecutive
reference marks are
passed over