PLCs
What is Scan Cycle?
Definition
One complete execution cycle of a PLC program including input reading, logic processing, and output updating. Scan cycle time determines the PLC's response speed and must be fast enough for the controlled process.
Related Terms
Scan Time
The duration of one complete PLC scan cycle, measured in milliseconds. Short sca...
PLC (Programmable Logic Controller)
A ruggedized digital computer used to automate industrial processes by reading i...
CPU Module
The central processing unit of a PLC system that executes the control program, m...
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