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Machine operating area 01/2008
4.6 Automatic mode
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© Siemens AG 2008 All rights reserved.
4-142 SINUMERIK 840Di sl/840D sl/840D Operating Manual HMI-Advanced (BAD) - 01/2008 Edition
Block search
The following versions are available:
1. Without calculation on contour:
No calculations are made during block search. The values stored in
the control remain the same as they were before the block search.
2. With calculation on contour:
During block search with calculation, the same calculations are
performed as in normal program control. The complete target block
is then executed in the same way as with normal program
execution.
3. With calculation at block end point:
During block search with calculation, the same calculations are
performed as in normal program control. The interpolation mode
valid in the target block is then applied to approach its end point or
the next programmed position.
4. Multi-channel block search with calculation
This block search is called SERUPRO in "Program test” mode.
Single-channel applications are supported for parallel interaction
with other functions. No axis movements are executed during the
block search; however, all auxiliary functions are output to the PLC
during the block search.
The NC will start the selected program in Program test mode
automatically. If the NC reaches the specified target block in the
current channel, it stops at the beginning of the target block and
deselects Program test mode again. The auxiliary functions up to
the target block are not output. After continuing the program with
NC start (after REPOS motion) the auxiliary functions of the target
block are output.
The search target can be determined:
• Direct positioning
• By specifying a block number, a label, a program name or any
character string
References
For further information about block search, please refer to:
/FB1/ Function Manual Basic Functions; K1:
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