Siemens SINUMERIK 840Di sl Operating Manual page 143

4
01/2008
Block
search
Without
calculation
Calculate
contour
Calc. block
end poin
© Siemens AG 2008 All rights reserved.
SINUMERIK 840Di sl/840D sl/840D Operating Manual HMI-Advanced (BAD) - 01/2008 Edition
Sequence of operations
"AUTO" mode is selected in the "Machine" operating area.
The channel is in reset status
The program in which the block search is to be performed is selected.
Calls up the "block search" function.
Position the cursor on the target block.
Notes
• If the target block is found, this block becomes the current block.
HMI announces "Search target found" and displays the target block
in the current block display.
• Action blocks (e.g., collection of auxiliary functions) are output after
the first NC Start.
• Alarm 10208 is output to indicate that operator interventions such
as Overstore or Mode Change after JOG are permissible.
• After the second NC Start, the program is started and the process
resumes at this target block.
Block search start without calculation
Block search without calculation is used to find a part program block in
the quickest possible way. No calculation of any type is performed.
The control status at the target block remains unchanged compared to
the status before the start of the block search.
Block search start with calculation on contour
Block search with calculation at contour is used to enable the
programmed contour to be approached in any situation. On NC
START, the start position of the target block or the end position of the
block before the target block is approached. This is traversed up to the
end position. Processing is true to contour.
Block search start with calculation at block end point
Block search with calculation at block end point is used to enable a
target position (e.g., tool change position) to be approached in any
situation. The end position of the target block or the next programmed
position is approached using the type of interpolation valid in the
target block. This is not true to contour. Only the axes programmed in
the target block are moved.
Machine operating area
4.6 Automatic mode
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