Structured Text Components: Constructs
Program constructs alone or nest within other constructs.
If | Use this construct |
Doing something if or when specific conditions occur | IF. . . THEN |
Selecting what to do based on a numerical value | CASE. . . OF |
Doing something a specific number of times before doing anything else | FOR. . . DO |
Continuing doing something when certain conditions are true | WHILE. . . DO |
Continuing doing something until a condition is true | REPEAT. . . UNTIL |
Some Key Words are Reserved
These constructs are not available:
- GOTO
- REPEAT
Logix Designer
application will not let you use them as tag names or constructs.Provide Feedback