ISO 15118-20
DC sessions with external identification, Scheduled and Dynamic control, TLS 1.3 and the certificate profile, test cases from ISO 15118-21, and Amendment 1 (2026) with its MCS and AC DER services.
DEVlink / GuidesCharging communication,
GUIDES
Charging communication,
explained from the bench.
Engineering guides on the protocols between an electric vehicle and a charger, and on the test benches that prove them: ISO 15118-20, ISO 15118-2, DIN 70121 and IEC 61851-23/-24 System A (the CAN-based DC scheme), for automotive and aerospace programmes. Written from sessions that run every day, with the limits of every claim stated.
22 October 2026 · PROTOCOL GUIDE
Simulating an ISO 15118-20 charger or vehicle on a PC
Loopback on one PC, two PCs over Ethernet, or a device under test on the link: how a SECC or EVCC simulator is used, what a plant model adds, and the three things that fail first.
Read the guide ↗ 21 October 2026 · TEST BENCH GUIDEAn ISO 15118-20 charging bench on NI VeriStand
The two-PC layout, the FMI 2.0 plant model, 500 Hz timing, the plant and operator channels, fault injection, and what a DC session looks like when the charger is coupled to a VeriStand plant.
Read the guide ↗ 20 October 2026 · PROTOCOL GUIDEISO 15118-20: how a DC charging session really runs
The second-generation protocol explained message by message: TLS 1.3, SDP, Scheduled and Dynamic control, the DC sequence, and how to simulate the charger or the vehicle.
Read the guide ↗ CUSTOMER CASE STUDY · AUTOMOTIVE TIER 1EVCC verification in SIL. Software delivered and tested on time.
How ChargeLink CLI integration supported a real EVCC application running as a vECU, without a physical bench.
Read the customer story ↗ CHARGELINK MANUAL · PROTOCOL RUNBOOKSISO 15118-20, ISO 15118-2, DIN 70121 and System A runbooks
The operating procedures behind the guides: profiles, roles, bench preflight and the capability boundaries that apply to every result.
Open the runbooks ↗WHAT THE GUIDES COVER
Protocol stacks
and the benches that test them.
ISO 15118-2 and DIN 70121
The first-generation CCS protocol and its DC-only predecessor: sequence, EXI and V2GTP, TLS 1.2, and why both are still negotiated in 2026.
IEC 61851-23/-24 System A
The CAN-based DC charging scheme: the message groups, the sequence, faults on the bus, and both roles on one PC, two PCs or a physical CAN interface.
Test benches
SIL, signal-level and power-level HIL for EVCC and SECC verification, the NI VeriStand charging bench, CI over gRPC, and the evidence a reviewer accepts.
Electric aviation
CCS and MCS communication for aircraft and eVTOL programmes: what transfers from road vehicles, what does not, and how to start before the aircraft exists.
Other standards
MCS, NACS (SAE J3400) and GB/T 27930 explained as standards. In ChargeLink these are in development; talk to us about your project.
YOUR NEXT MOVE
Bring one charging problem.
ChargeLink is available through a scoped technical evaluation. Agree the protocol, role, environment and evidence before starting.