HEIDENHAIN iTNC 530 Service Manual page 224

Position encoder Function when MP1350.x = 1
with one reference
mark
14 – 222
Closed
Open
Traverse direction MP1320
Press the external START key
No
Machine moves
in direction from
MP1320
Trip dog
"Reference end position" is
closed before two successive
reference marks are
traversed
No
Reference marks
Trip dog
"Reference end position"
Trip dog
"Reference end position"
closed?
Machine moves in inverted
traverse direction from
Yes
Reference mark is passed over
Is the machine
outside the software
limit switch range?
Machine moves to
No
software limit switch
Machine stops
HEIDENHAIN Service Manual iTNC 530
Yes
MP1320
Yes