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
You cannot use them as tag names or constructs.
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