Siemens Sinumerik 840DiE sl - Page 361

01/2007
11.5 Axes and spindles
11-361
© Siemens AG 2007 All Rights Reserved
SINUMERIK 840Di sl Manual (HBIsl) – 01/2007 Edition
2. Determine the absolute machine actual position
Determining the absolute machine actual position, e.g., can be performed by
traversing the machine axis to a known position (fixed stop). Alternatively, it
can be measured at any position (laser interferometer).
3. Calculating the absolute offset
– Linear measurement system noninverse to machine system:
Absolute offset = machine actual position + actual position of
the measuring system
– Linear measurement system inverse to machine system:
Absolute offset = machine actual position – actual position of
the measuring system
S MD34090: REFP_MOVE_DIST_CORR (reference point/absolute offset)
!
Warning
After you have determined the absolute offset and made an entry in
S MD34090: REFP_MOVE_DIST_CORR (absolute offset)
the position measuring system must be re–referenced.
/FB1/ Description of Functions, Basic Functions,
R1 Reference point approach
Section:Referencing on linear measuring systems with
distance–coded reference marks
References
11 NCK Commissionin
g
with HMI Advanced