The following questions can be used to test your retention of the concepts introduced in this chapter. You can find the answers to these questions in the back of the book under Assessments:
- What type of assignment operator sets a value that will not be restored after a power cycle of the controller or when the controller is switched back to run mode?
- What set of operators always evaluates an expression to either true (1) or false (0) and is typically used in a construct such as the IF statement?
- What is the name of the set of ST operators that are used in calculations (which is the real strength of ST compared to other IEC languages)?
- What is the ST term for a combination of values, constants, tags, operators, and functions that are interpreted according to particular rules of precedence and produce a value?
- What set of instructions aids with complex calculations in an ST routine?
- What ST instruction...
