Mitsubishi Electric Q173HCPU Specifications download pdf (Page 317)

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6 MOTION PROGRAMS FOR POSITIONING CONTROL

6.16.1 Program control function (IF, GOTO statement)

Code IF, GOTO

Function Program control function

The flow of execution program is controlled based on the condition.

Format

Sequence No.

expression

]

;

GT nO

[Explanation]

(1) If the specified expression is true (1) (condition is satisfied), execution jumps to the

sequence No. specified in GOTO.

If the expression is false (0), the next line is executed.

IF [#@100 EQ1] GOTO100 ;

If #@100 is 1, execution jumps to N100.

If it is other than 1, the next line is executed.

IF [#@100] GOTO100 ;

If #@100 is 1 (true), execution jumps to N100.

If it is 0 (false), the next line is executed.

(2) The following comparison instructions may be used in the expression.

Code Meaning

EQ Equal to (=)

NE Not equal to (!=)

GT Greater than (>)

LT Less than (<)

GE Greater than or equal to (>=)

LE Less than or equal to (<=)

(3) The expression must be enclosed in "[", "]".

(4) The line number specified in GOTO must exist in the same program. If it does not

exist, an error (error code : 541) occurs.

(5) If only GOTOn is specified, execution jumps to the specified sequence No.

unconditionally.

(6) The GOTO statement cannot cause execution to go into or come out of the THEN

and ELSE statements.

It is similar for the DO statement.

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Mitsubishi Electric Q173HCPU Specifications Page 317

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