Yaskawa LEGEND-MC - Manual (Page 152)

142
LEGEND-MC User’s Manual
JS (Jump to Subroutine)
[Program Flow]
DESCRIPTION:
The JS command will change the sequential order of execution of commands in a program. If the jump is
executed, the program will continue at the label specified by the destination parameter. The line number of
the JS command is saved and after the next EN command is encountered (End of subroutine), program
execution will continue with the instruction following the JS command. The JS command can be nested 16
deep.
Multiple conditions can be used in a single jump subroutine statement. The conditional statements are
combined in pairs using the operands “&” and “|”. The “&” operand between any two conditions requires
that both statements must be true for the combined statement to be true. The “|” operand between any two
conditions requires that only one statement be true for the combined statement to be true.
NOTE: Each condition must be placed in parenthesis for proper evaluation by the controller as a
boolean expression. Subroutines can be nested 16 deep in the standard controller.
ARGUMENTS: JS destination,condition where
destination is a line number or label
condition is a conditional statement using a logical operator
The logical operators are:
USAGE:
RELATED COMMANDS:
EXAMPLES:
< less than >= greater than or equal to
> greater than <> not equal
= equal to | logical OR (pipe symbol)
<= less than or equal to & logical AND
While Moving Yes Default Value ---
In a Program Yes Default Format ---
Command Line No
Can be Interrogated No
Used as an Operand No Distributed Control No, Local
"EN" End
JS #SQUARE, (V1<5) Jump to subroutine #SQUARE if V1 is less than 5
JS #LOOP, (V1<>0) Jump to #LOOP if V1 is not equal to 0
JS #A Jump to subroutine #A (no condition)