Conditional interpretation

Similar to a precompiler-statement in the programming language C, parts of NC-program can be summarized in #IF-#ELSE-#ENDIF-constructs. The interpretation of these program parts can thus be controlled as a function of the arithmetic expression.

The conditional interpretation always begins with

#IF <expr>

and ends with

#ENDIF

The statement

#ELSE

is optional and serves to build up a branching also.

Notice
The condition in $IF-control-block is checked by verifying the mathematical expression for true or not true (TRUE and FALSE). To be able to use also decimal variables the jump condition is fulfilled (TRUE) if.. the absolute value of the mathematical expression is > or = 0.5.

In the use of conditional interpretation, the following rules are valid:

Only "/" may be programmed in front of #IF, #ELSE und #ENDIF. Block numbers are not allowed.
Nested conditional interpretations are allowed. The nesting depth is firmly given.
Invalid branches of conditional interpretations are not checked for syntax but completely skipped.

Programming example

#IF V.E.START_VALUE == TRUE 
N100 F100 
: 
#ELSE 
N200 F40 
: 
#ENDIF 
N300 
: 
: 
N999 M30