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.
Site acceptance test (SAT)
An agreed test of installed equipment and interfaces under the site’s approved conditions.
SAT checks must be tied to project requirements and executed through controlled site procedures. Factory simulation is useful prior evidence but does not replace installed loop and interface checks. Keep safety validation distinct from a general control-system checklist. The acceptance worksheet records failures, retests and remaining gaps.
See also: Factory acceptance test (FAT) · Management of change (MOC)
Use the concept: PLC FAT & SAT checklist template · 4–20 mA loop scaling · Industrial automation fundamentals
In depth
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.
OT backup and restore testing: prove the recovery path
Inventory the files and dependencies needed to recover a control system, set recovery objectives, and test restoration on an isolated target.