Automation ROI and payback: a business case operations can verify
Separate installed cost, cash savings, released capacity and recurring expenses, then test a conservative scenario before approving automation.
Historian deadband
A configured change threshold used in some historian or gateway recording policies.
An absolute threshold uses engineering units; a percentage needs an explicit reference span. Acquisition, publish and archive filtering can occur at different stages. Test ramps, excursions, state changes and bad-quality values before accepting a storage reduction. The historian guide includes a raw-volume calculation.
See also: Historian · Source timestamp · Deadband
Use the concept: OT backup & restore test template · Industrial data contract template · Cp, Cpk, Pp & Ppk calculator
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.
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.