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Siemens SINUMERIK 840D Operator's Manual Page 108

Computerized numerical control system for machine tools.
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4
Machine Operating Area
4.6 Automatic mode
Block
search
Calculate
contour
Calc. block
end point
without
calculation
Reset
Search
position
Program
Program
level +
level −
or
4-108
Operating sequence
"Auto" is selected in the "Machine" operating area.
The channel is in the reset state.
The program in which the block search is to be performed is selected.
Calls up the "Search position" function.
Position the cursor on the destination block.
The block search is started when you press one of the following three
softkeys:
Block search start with calculation on contour
When you press "Cycle Start", the axes execute a
compensatory motion between the current actual position and
the position of the block located by the block search.
The new position is determined by the program status (all axis
positions, active auxiliary functions) at the beginning of the
selected block, i.e. after the block search, the control is
positioned at the end position of the last NC block before the
search destination.
Block search start with calculation at block end point
Block search start without calculation
If the destination block is found this block becomes the current
block. HMI Embedded signals "Search target found" and
displays the target block in the current block display.
Alarm 10208 is output to indicate that operator interventions
such as Overstore or Mode Change after JOG are permissible.
After "Cycle Start" the program is started and executed from the
target block.
Block search can be aborted with Reset.
Define search destination in program editor:
The current selected program level is displayed.
Position the cursor bar on a destination block of your choice in the
part program.
If the program interruption occurred in a subprogram level, you can
change program levels here.
SINUMERIK 840D/810D Operator's Guide HMI Embedded (BEM) – 03.04 Edition
4
03.04
 Siemens AG, 2004. All rights reserved

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