Takt time vs cycle time vs lead time: calculate the right clock
A worked shift example separates customer pace, observed process speed and end-to-end delivery time, with practical checks before changing the line.
PLC
Rugged deterministic controller running scan-cycle logic.
Programmable logic controller: a ruggedized computer executing deterministic scan cycles — read inputs, run logic, write outputs — typically programmed in IEC 61131-3 languages. The default controller for discrete automation and small process skids.
See also: IEC 61131-3 · DCS · RTU
Use the concept: 4–20 mA loop scaling · Industrial automation fundamentals · Modbus RTU CRC & frame helper
In depth
PLC FAT and SAT checklist: test behavior and handover evidence
Plan factory and site acceptance around requirements, observable results, failure states, approved changes and recoverable project files.
PLC analog input scaling: raw counts, 4–20 mA and diagnostics
Map raw counts into engineering units, check the configured channel range, and keep signal-quality diagnostics separate from the displayed value.