HEIDENHAIN iTNC 530 Service Manual page 225

Linear Function when MP1350.x = 2
measurement
For linear measurement using a rotary encoder, a reference pulse is produced on each revolution
through rotary
of the encoder. Ensure that during referencing the same reference pulse is always evaluated.
encoder
This can be realized with the trip dog for reference end position.
Closed
Open
July 2002
Desired reference pulse
Traverse direction MP1320
Press the external START key
No
"Reference end position"
Machine traverse in direction from
MP1320 with velocity from
MP1330.x to the trip dog
"Reference end positon"
Machine traverse in inverted direction
from MP1320 and with reduced velocity from MP1331.x
The first reference pulse after opening of the trip dog
"Reference end position" is evaluated
machine outside
the software limit
switch range?
No
Machine stops
Measuring length
Reference pulse
Trip dog
"Reference end position"
Trip dog
Yes
closed?
Is the
Yes
Machine moves to
software limit switch
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