Comments; Skip Block - Siemens Sinumerik 840D sl Programming Manual

Principles of programming
1.1 Introductory comments
1.1.7

Comments

In the ISO dialect mode, brackets are interpreted as comment signs. In the Siemens mode,
";" is interpreted as comment. To simplify matters, an ";" is also understood as comment in
the ISO dialect mode.
If the comment start sign '(' is used inside a comment again, the comment is ended only if all
the open brackets are closed again.
Example:
N5 (comment) X100 Y100
N10 (comment(comment)) X100 Y100
N15 (comment(comment) X100) Y100
X100 Y100 is executed in block N5 and N10, but only Y100 in block N15, because the first
bracket is closed only after X100. Everything up to that point is interpreted as comment.
1.1.8

Skip block

The sign of skipping or suppression of blocks "/" can be used at any convenient position in a
block, i.e. even in the middle of the block. If the programmed block skip level is active on the
date of the compilation, the block is not compiled from this point up to the end of the block.
An active block skip level has the same effect as a block end.
Example:
N5 G00 X100. /3 YY100 --> Alarm 12080 "Syntax error"
N5 G00 X100. /3 YY100 --> no alarm, if block skip level 3 is active
Block skip signs within a comment are not interpreted as block skip signs
Example:
N5 G00 X100. ( /3 Part1 ) Y100
;the Y axis is traversed even when the block skip level 3 is active
The block skip levels /1 to /9 can be active. Block skip values <1 and >9 lead to alarm 14060
"Impermissible skip level for differential block skip".
The function is mapped to the existing Siemens skip levels. Unlike the ISO Dialect original,
"/" and "/1" are separate skip levels that must also be activated separately.
Note
The "0" in "/0" can be omitted.
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Programming Manual, 06/09, 6FC5398-7BP10-1BA0
ISO Milling