HEIDENHAIN TNC 407 (243 020) Technical Manual - Manual (Page 186)

01.98
TNC 407/TNC 415/TNC 425 2 Reference marks 4-61
Sequence "Automatic passing over reference marks" (Press the external START key).
MP1350.X = 2
Press the external START key
Trip dog
"Reference end position"
closed?
Machine traverse in direction from
MP1320.x with velocity from
MP1330.x to the trip dog
"Reference end positon"
Is the
machine outside
the software limit
switch range?
Machine moves to
software limit switch
Machine stops
No Yes
Yes
No
Machine traverse in inverted direction
from MP1320.x and with reduced velocity from MP1331.x
The first reference pulse after opening of the trip dog
"Reference end position" is evaluated