6
01/2008 "Program" operating area
6.5 Multi-channel step sequence programming (option)
6
© Siemens AG 2008 All rights reserved.
SINUMERIK 840Di sl/840D sl/840D Operating Manual HMI-Advanced (BAD) - 01/2008 Edition 6-269
See also:
Chapter Commissioning operating area, HMI, "System settings".
Sequence of operations
Open With a single keystroke, all of the MPF available for a workpiece are
opened in the assigned channel (Load/Unload/Select via job list), i.e.,
the corresponding programs no longer have to be selected individually
in the data selector, but rather the workpiece softkey can be selected
directly if all the necessary preparations have been made.
For existing part programs, which are shown in the step sequence
display, the following preconditions must be met before opening:
The channel assignment is defined in the following files:
• JOB list
• DAT file
• START/INIT in a start program
DAT environment The DAT file contains the description of which program should be
opened and in which channel (channel number) of the machine (NC)
this should be called up for execution; this is also referred to as the
DAT environment.
Create a DAT file If this file does not already exist in the workpiece directory, it will be
created automatically under the following preconditions:
• <Workpiece name>.job with the same name exists and this job
list contains select instructions.
• Can be derived from the information required for the DAT
environment.
• <Workpiece name>.mpf with the same name exists and this part
program contains INIT/START instructions.
• Can be derived from the information required for the DAT
environment.
As soon as a DAT file has been created and is available, a check is
carried out each time it is opened to ensure that the DAT file has the
latest time stamp. If the time stamp is not current, the file is updated.
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