Activating Simulation - Siemens SINUMERIK 840Di sl Operating Manual

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01/2008
Evaluation and optimization

6.5.3 Activating simulation

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SINUMERIK 840Di sl/840D sl/840D Operating Manual HMI-Advanced (BAD) - 01/2008 Edition
6.5 Multi-channel step sequence programming (option)
Reposition the steps or synchronization points (WAITM()) so that
multi-channel execution improves parallelism and therefore shorter
workpiece processing times:
• Select extremely long steps and analyze the environment
• Redistribute some tasks across the channels (e.g., break down
longer-lasting steps so that processing can be carried out by
several channels in parallel)
• Optimize synchronization between the channels
• Change the technological process (e.g., use steel profiles or
special tools with a shorter processing time)
Additional information
After making changes to the program, you need to process the
workpiece again to compute the new times.
Programs which have been modified are marked with a red X until the
times have been updated.
If timing has not been performed, all steps in the program are
displayed with equal time lengths. The computed times are saved in a
.DAT file for each workpiece.
Function
The multi-channel step sequence display also supports multi-channel
simulations. Here, the NC language labels such as WAIT2: WAITM
are inserted in the NC part program. The labels are removed again
when you exit the simulation and return to multi-channel step
sequence display.
The labels continue to remain in place, if you are in the simulation or
in the correction editor and also:
• The control is switched off.
• The write access for the opened file is canceled.
Multi-channel, section by section program simulation
There are specific NC instructions for program coordination for
synchronizing program execution as required for multi-channel
manufacturing of workpieces: (INIT(..), START(..), WAITM(..) etc.). In
principle, they can be used to start independent program sections in
parallel channels almost simultaneously and synchronize them via e.g.
"Program" operating area
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