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How to obtain scan execution times in M340 and Quantum PLC

Published date: 14 February 2020

Issue
What are scan execution times in M340 and Quantum PLC

NOTE (definitions):
- The amount of time it takes to perform one cycle is referred to as scan time
- Cycle means perform all configured, programmed and enabled activities in a fixed sequence as fast as possible

Product Line
Unity Pro (software)
M340, Quantum (PLC)

Environment
System Addressing

Cause
Trouble shooting purpose

Resolution
Scan execution times can be obtained using system objects:
  • %SW30    last scan
  • %SW31    longest scan
  • %SW32    shortest scan

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