19.5 PRACTICE PROBLEMS

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(Note: Problem solutions are available at http://sites.google.com/site/automatedmanufacturingsystems/)

1. Write a structured text program that will replace the following ladder logic.

2. Implement the following Boolean equations in a Structured Text program. If the program was for a state machine what changes would be required to make it work?

3. Convert the following state diagram to a Structured Text program.

4. A temperature value is stored in F8:0. When it rises above 40 the following sequence should occur once. Write a ladder logic program that implement this function with a Structured Text program.

5. Write a structured text program that will replace the following ladder logic.