Acu-Rite CNC 3500i user manual If Goto

11.4 Advanced Programming

If the expression is true, the program continues at N410, then to N440, where a jump is made to N480.

If the expression is false, the 3500i skips Blocks N410 to N440 and executes Blocks N450 to N470. In place of an expression, you can use a variable that while not zero is treated as a true expression. (Zero equals false. Any other value equals true).

IF - GOTO

N500 IF (expression) ) GOTO nnnn

N510 ------------

When you program IF-GOTO statements do not precede the block number with the character "N".

For example, IF-GOTO 487 skips to block number N487.

If the expression is true, the program jumps to the block number specified (nnn). If the expression is false, the program continues at Block N510. In place of an expression a variable can be used which while not zero is treated as a true expression. (Zero equals false. Any other value equals true).

WHILE - DO - END

N550 IF (expression) DO nnnn

N560 ------------

-- --

-- --

-- --

-- --

N590 ENDIF

N600 ------------

If the expression is true, the program repeats between N550 and N590 until the expression becomes false. Similarly, if the expression is false when Block N550 is executed, the 3500i jumps to Block N600. The number after DO is a label (identifier only) and the same number must be used to identify the END of the loop.

422 11 G-Code Edit, Help, & Advanced Features