Topics / Electronics & Automation
A supervisor tests your knowledge of PLC scan cycle. Which answer is best?
Answers
Aruns the program only once after installation
Bis a mechanical motor-starting sequence
Ctypically reads inputs, executes the control program, updates outputs, and performs housekeeping repeatedly
Dupdates outputs before reading any inputs and then stops
Correct answer: C — typically reads inputs, executes the control program, updates outputs, and performs housekeeping repeatedly
PLC scan cycle typically reads inputs, executes the control program, updates outputs, and performs housekeeping repeatedly.
MIFOTRA exam practicealigned to Technical Foundations·3 marks·Medium