PLCs - Ladder logic input/output
What does PLC stand for in automation?
Programmable Logic Controller
Which symbol represents a normally open contact in ladder logic?
—| |—
What is the purpose of an output coil in ladder logic?
To turn an external device on or off
Which type of input device is commonly used with PLCs?
Push button
What does a timer instruction do in ladder logic?
Delays the execution of certain actions
Which of the following is a type of PLC output?
Relay output
What does a normally closed contact do when activated?
Opens the circuit
Which programming language is commonly used for PLCs?
Ladder Logic
What is the function of a counter in ladder logic?
To count events or cycles
What happens when a PLC input is energized?
The corresponding input bit is set to 1