UDS Diagnostic Communication Solution
KopherUDS is a lightweight diagnostic communication architecture for production ECUs. It separates DCM communication management, DEM event management, and NM network management, with KITE UDS Tester covering development, production, and service diagnostics.
A complete path from ECU events to external diagnostic tools
KopherUDS is more than a UDS service table. It is an ECU-ready diagnostic core. DCM handles tester sessions, security access, request routing, and response timing; DEM manages fault events, debounce, snapshots, extended data, and DTC status; NM manages network wake-up, node state, bus sleep, and communication availability during diagnostics. Together with DoCAN / DoIP transport and KITE UDS Tester, it supports requirements, database, embedded integration, and test reporting.
DCM Communication Management
Manages diagnostic sessions, service dispatch, NRC, P2 / P2* timing, security access, routine control, and data read/write flows.
DEM Event Management
Manages fault events, debounce, DTC status bits, freeze frames, snapshots, extended data, and clear-DTC flows.
NM Network Management
Manages CAN / Ethernet diagnostic channels, node wake-up, communication enable, bus sleep, and network hold during diagnostics.
KopherUDS Detailed Architecture
The architecture is layered so diagnostic services, event data, network state, and application interfaces can evolve independently. It can be tailored for bootloaders, single ECUs, domain controllers, or production-line variants.
Tester / Tool Layer
External diagnostics and automation entry
Transport Layer
Packet segmentation, reassembly, and transport
DCM Communication Manager
UDS request / response and session behavior
DEM Event Manager
Event, DTC, and fault data lifecycle
NM Network Manager
Network state and communication availability
Application / Data Interface
ECU application, data, and security hooks
Engineering Details to Define
DID / DTC Database
Define DIDs, DTCs, snapshots, extended data, access control, data types, and versioning to keep tester and ECU behavior aligned.
Timing & Session
Configure P2 / P2*, S3 timeout, default / extended / programming sessions, and response pending behavior for long routines.
Security Access
Manage seed / key, unlock levels, retry counters, delay time, and secure service allowlists.
Event Debounce
Support counter, time-based, and condition-based debounce tied to event status and DTC status bits.
Network Availability
Link diagnostic sessions with NM state so the ECU does not sleep or disable communication during tests or flashing.
Flash / Boot Flow
Support request download, transfer data, transfer exit, checksum, reset, and bootloader handshakes.
Typical Diagnostic Data Flow
Coverage
Delivery Scope
Build a Production-Ready Diagnostic Architecture
We help define diagnostic specifications, KopherUDS stack integration, DID / DTC databases, DEM / DCM / NM design, and KITE UDS Tester scripts for ECU diagnostics.