Parker ACR Series, Руководство программиста

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Parker Hannifin
You can exit a FOR/NEXT loop before the counter is complete using
a BREAK statement. When the condition is met, the statement
immediately following the FOR/NEXT loop executes.
Example
The following demonstrates a FOR/NEXT loop with a BREAK
statement.
FOR LV0 = 0 TO 499 STEP 1
PRINT LA0(LV0), SA0(LV0)
DWL 0.01
IF (BIT 24)
BREAK
ENDIF
NEXT
WHILE/WEND
The WHILE/WEND loop executes as long as its condition remains true.
You can use the WHLE/WEND anywhere in a program.
The WHILE sets the condition, and is followed by statements you
want executed when the condition is true. When the condition is
false, the statement immediately following WEND executes. The
condition is evaluated only at the beginning of the loop.
When using a
WHILE/WEND statement, observe the following:
•
Do not nest GOTO statements in an WHILE/WEND statement.
•
At the start of each loop through the WHILE condition, the
validity of the condition is tested.
Example
The following demonstrates a WHILE/WEND loop. While the encoder
position for axis 2 is less than 1500 units, the WHILE statement
evaluates as true. As the loop runs, the array acts as a counter,
incrementing with each loop; axis X move an incremental 25 units;
the program pauses for 1.5 seconds, then prints the current value of
the array; and if the input (bit 24) is set the loop breaks. When the
encoder count exceeds 1500, the condition is false and execution
moves past the
WEND statement.
WHILE (P6176 < 1500)
LA0(1) = LA0(1) + 1
X/25
DWL 1.5
PRINT LA0(1)
IF (BIT 24)
BREAK
ENDIF
WEND
Programming Basics 23