Siemens sinumerik 840D sl Function Manual page 483

Boundary conditions
3.1 Transition to newer NCK versions (840D)
3.1.7 Convert archive
The archive created in the standard procedure or together with optimization of the static NC
memory usage (see "Create backup archive" section) has to be converted. The arc4elf.exe
program is required for this purpose (available from E-Support).
You can call up help for using this program by means of arc4elf -h.
The general callup form is:
arc2elf ORIGINAL.ARC CONVERTED.ARC
Proceed as follows
1. Replace ORIGINAL:ARC and CONVERTED.ARC with the actual archive names.
3.1.8 Load converted archive
Proceed as follows
1. Load the converted archive.
2. Activate the imported data by NC-RESET.
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The converted archive is created in the same directory as the original archive.
References:
/BAD/ Operator's Manual HMI Advanced
Special functions: Installation and Activation of Loadable Compile Cycles (TE01)
Function Manual, 11/2006, 6FC5397-2BP10-2BA0