Siemens SINUMERIK 840DE Programming Manual page 63

Example for machine data (see also "Programming Guide Advanced"):
$MN_AUXFU_GROUP_SPEC='B10000001'
The maximum number of characters is limited by the value range of the integer data type.
Program section
A program section consists of a main block and several subblocks.
Examples:
:10 D2 F200 S900 M3
N20 G1 X14 Y35
N30 X20 Y40
N40 Y-10
...
N100 M30
Skipping blocks
Blocks, which are not to be executed in every program pass (e.g., execute a trial program
run), can be skipped.
Blocks, which are to be skipped are marked with an oblique "/" in front of the block number.
Several consecutive blocks can also be skipped. The instructions in the skipped blocks are
not executed; the program continues with the next block, which is not skipped.
Fundamentals
Programming Manual, 10.2004 Edition, 6FC5 298-7AB00-0BP1
Fundamental Principles of NC Programming
2.2 Language elements of the programming language
;Assignment of binary constants to
;machine data bit 0 and 7 are set
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