CH 4: Basics of Ladder Logic Programming

Front

What is the purpose of ladder logic in programming?

Back

To simplify programming for electricians and maintenance workers

Front

Which of the following is a type of logic covered in ladder logic programming? XOR (exclusive or), XIC (normally-open), NAND (not and), NOR (not or)

Back

XIC (normally-open)

Front

What will not be covered in detail until Chapter 5? Basic instructions, Simple mistakes to avoid, Testing tools

Back

Data addressing

Front

What is the starting ladder program file you need to select in RSLogix?

Back

LAD 2

Front

In a ladder program, what does the left rung represent?

Back

Power Rung

Front

What is the purpose of a parallel rung in a ladder program?

Back

To test multiple instructions simultaneously

Front

What does the XIC instruction in RSLogix stand for?

Back

Examine If Closed

Front

In the context of PLC programming, what does the XIO instruction do?

Back

Examine If Open

Front

What is the purpose of using XIC and XIO instructions in a PLC program?

Back

To control lights based on switch positions

Front

What does OTL stand for in PLC programming?

Back

Output Latch