AEF VT Certification Roadmap & Documentation Kit
The AEF VT Certification Roadmap & Documentation Kit is an official resource published by the Agricultural Industry Electronics Foundation (AEF) to guide manufacturers through the standardized certification process for ISOBUS Virtual Terminal (VT) devices. It defines mandatory and optional conformance requirements, test procedures, versioning rules, and documentation templates required to achieve AEF-compliant VT interoperability. The kit ensures that VT implementations across different manufacturers correctly interpret and execute ISOBUS messages, enabling plug-and-play functionality with compatible ECUs and task controllers.
📖 Overview
📑 Key Components
🎯 Applications
- ✓ Certifying VT software/firmware for OEM agricultural machinery
- ✓ Validating interoperability between VTs and ISOBUS-compatible ECUs (e.g., section controllers, implement controllers)
- ✓ Supporting AEF Plug-and-Play (PnP) compliance audits and type approval for CE/UL certification
📐 Key Formulas
VT Version Compatibility Index
CI = Σ(w_i × δ_i) / Σw_i, where δ_i = 1 if feature i is supported and compliant, else 0; w_i = AEF-assigned weight for feature i
Quantifies overall conformance score across weighted functional categories (e.g., object pool, messaging, diagnostics) for certification tier assessment.
Object Pool Memory Overhead Ratio
R = (Used_Object_Pool_Memory / Allocated_Object_Pool_Memory) × 100%
Measures memory utilization efficiency during VT runtime; must remain ≤95% under worst-case load per AEF CTS §7.3.2.