Programming manual.
CNC 8070
STATEMENTS AND INSTRUCTIONS
22.
Flow controlling instructions
·439·
(REF: 1709)
22.2.6 Conditional block repetition ($DO)
$DO ... $ENDDO <CONDITION>
The following parameter is defined in this instruction:
While the condition is true, it repeats the execution of the blocks contained between $DO
and $ENDDO. The condition is analyzed at the end of each repetition, therefore the group
of blocks is executed at least once.
The $BREAK instruction lets ending block repetition even if the stop condition is not met.
The execution of the program continues at the block after $ENDDO.
The $CONTINUE instruction starts the next repetition even when the current one has not
finished. The blocks programmed after $CONTINUE up to $ENDDO will be ignored in this
repetition.
<condition> It may be a comparison between two numbers, parameters or arithmetic
expressions whose result is a number.
...
N20 $DO
N30 P1=P1+1
N40...
N50...
N60 $ENDDO P1<=10
N70...
Blocks N30 through N50 are executed while P1 is smaller than or equal 10.
...
N20 $DO
N30...
N40 $IF P2==2
N50 $BREAK
N60 $ENDIF
N70...
N80 $ENDDO P1<= 10
...
Block repetition stops if P1 is greater than 10, or if P2 = 2.
...
N20 $DO
N30...
N40 $IF P0==2
N50 $CONTINUE
N60 $ENDIF
N70...
N80...
N80 $ENDDO P1<= 10
...
If P0=2, it ignores blocks N70 through N80 and it starts a new repetition at N20.
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