Siemens SINUMERIK 840Di Function Manual page 602

Detailed Description
2.6 Block search Type 5 SERUPRO
2.6.6 Special features in the part-program target block
2.6.6.1 STOPRE in the part-program target block
STOPRE block
The STOPRE block receives all modal settings from the preceding block and can, therefore,
apply conditions in advance in relation to the following actions:
• Synchronize program line currently processing with the main run.
• Derive modal settings for SERUPRO in order, for example, to influence this REPOS
Example 1:
Position a Z axis by specifying an X axis setpoint.
When block "G1 F100 Z=$AA_IM[X]" is interpreted, the preceding STOPRE block ensures
synchronization with the main run. The correct setpoint of the X axis is thus read via $AA_IM
to move the Z axis to the same position.
Example 2:
Read and correctly calculate external zero offset.
N10 G1 X1000 F100
N20 G1 X1000 F500
N30 G1 X1000 F1000
N40 G1 X1000 F5000
N50 SUPA G1 F100 X200
N60 G0 X1000
N70 ...
An implicit STOPRE before N50 allows the NCK to read and calculate the current work offset
correctly.
In a SERUPRO operation to search target N50, repositioning to the implicit STOPRE is
performed during the SERUPRO approach and the velocity is determined as F5000 from
N40.
2-66
motion on approach of SERUPRO.
;
;
;
;
; Move external zero offset after 200
;
;
Mode Group, Channel, Program Operation, Reset Response (K1)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0