The case branch
The case branch allows, as a function of an arithmetical expression, the processing of different NC-program variants.
For the case branch, the control-statements given below are used
$SWITCH, $CASE, $DEFAULT, $ENDSWITCH .
The case branch always begins with
$SWITCH <expr1> followed by several
$CASE <expr2>
$BREAK optionally followed by:
$DEFAULT and always ends with
$ENDSWITCH Programming example
N100 $SWITCH P1=INT [P1*P2/P3] If the result of the arithmetic expression
is equal 1, the blocks after $CASE 1 will
be executed (N120 bis N140)N110 $CASE 1
N120 ... N130
N140 $BREAK
N150 $CASE P2 If the result is equal to P2, tzhe blocks
N160 ..N170 will be executed.
N160 ...
N170 $BREAK
N300 $CASE n
N320 ...
N330 $BREAK
N350 $DEFAULT The $DEFAULT block is optional and serves to
process the NC-blocks.
N360 ... N360 to N380, if the result of the $SWITCH-
Block has not matched any of the
N370
N380
N390 $ENDSWITCH | The comparison of the expression <expr1> and <expr2> is carried out in internal REAL-mode. Here, both the expressions are evaluated as equal if the value difference is < 0.001. |