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How to obtain scan execution times in M340 and Quantum PLC

Published date: 14 February 2020

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)

System Addressing

Trouble shooting purpose

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

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