OCPP 2.0.1 simulator
An OCPP 2.0.1 simulator is a virtual charge point that speaks OCPP 2.0.1 over WebSocket so you can test a CSMS (or CPMS) without booking a lab EVSE. Chargeflux runs that station in the cloud: browser UI, hosted runtime, charger presets, and a message console you can filter and export.
OCPP 2.0.1 is not “1.6 with extra fields.” Message names, the transaction model, and security expectations change enough that CSMS teams need a dedicated path — not a 1.6 script with a renamed subprotocol. Official definition: OCPP 2.0.1 at the Open Charge Alliance (download the specification).
Launch the OCPP 2.0.1 simulator · Getting started · Test CSMS without hardware
Who this OCPP 2.0.1 simulator is for
- CSMS / CPMS engineers validating 2.0.1 Boot, status, and TransactionEvent flows before a hardware slot is free
- QA teams that need a stable virtual station ID and exportable session logs
- Teams shipping dual-stack backends who already use the OCPP 1.6 simulator and need matching 2.0.1 coverage
- CPO software teams comparing how an OCPP charge point simulator (virtual charge point) behaves versus a single physical EVSE
Why teams still struggle with 2.0.1 testing
- Hardware that only speaks 1.6 cannot prove 2.0.1 code paths.
- TransactionEvent replaces the 1.6 Start/Stop/MeterValues pair; backends that map incorrectly fail only under real traffic.
- Mixed fleets force CSMS logic to branch by protocol version per station — easy to break without two simulators.
- Device model and security profiles are stricter; stub payloads hide inventory and TLS bugs until field rollout.
What you can prove with an OCPP 2.0.1 simulator
| Scenario | Why it matters | How Chargeflux helps |
|---|---|---|
Station registration (BootNotification) | 2.0.1 uses chargingStation identity and reason codes — wrong shape blocks every later test | Connect → inspect call/result pair; see 2.0.1 BootNotification |
Connector / EVSE status (StatusNotification) | Five connectorStatus values and EVSE ids differ from the 1.6 nine-state list | Drive states from the UI; 2.0.1 StatusNotification |
Sessions via TransactionEvent | Started / Updated / Ended replace StartTransaction, MeterValues, and StopTransaction | Local + remote sessions; correlate by transaction id — TransactionEvent guide |
| Remote start / stop | RequestStartTransaction / RequestStopTransaction paths often diverge from local auth | Send from CSMS; watch frames — RequestStartTransaction |
| WebSocket drops | Production chargers disconnect; CSMS must recover session state | Prefer CSMS/network-side close (not UI Disconnect teardown); see WebSocket troubleshooting |
1.6J vs 2.0.1 — practical differences for CSMS QA
| Area | OCPP 1.6J | OCPP 2.0.1 |
|---|---|---|
| Session model | StartTransaction + MeterValues + StopTransaction | TransactionEvent (Started / Updated / Ended) |
| Remote start | RemoteStartTransaction | RequestStartTransaction |
| Device model | Lighter configuration surface | Structured components and variables — inventory screens need real payloads |
| Security | Common profiles still vary by vendor | Production often assumes stricter TLS and credential handling |
Version overview with official links: OCPP 1.6 vs 2.0.1 vs 2.1. Protocol primer: what is OCPP.
Suggested CSMS test matrix
- Register a 2.0.1 virtual station and confirm Boot / status reporting (BootNotification, StatusNotification).
- Complete one local session and one remote-started session; verify energy and transaction IDs on the backend via TransactionEvent.
- Exercise a CSMS- or network-side WebSocket close mid-session (firewall drop, proxy idle timeout, or CSMS forcibly closing the socket). Confirm your backend reconciles state when the station reconnects and boots again. Do not use the simulator UI's Disconnect for this case — that tears down the hosted station session rather than simulating an ungraceful link drop. See WebSocket troubleshooting for connect failures.
- Repeat the same scenarios on a 1.6 station if your product claims dual protocol support (OCPP 1.6 simulator).
How to start with the OCPP 2.0.1 simulator
Shared UI walkthrough (protocol-aware steps for 1.6J and 2.0.1): getting started. 2.0.1-specific path:
- Open the simulator, create a virtual station, and set protocol to OCPP 2.0.1 (not the default 1.6J preset).
- Point it at a non-production CSMS URL (connect your CSMS).
- Connect — the hosted runtime opens the WebSocket with the 2.0.1 subprotocol and sends BootNotification. Confirm Accepted / Pending / Rejected in the console.
- Drive one local session and one RequestStartTransaction; watch TransactionEvent frames (Started / Updated / Ended) — not 1.6 Start/Stop/MeterValues.
- Copy-paste reference frames from OCPP 2.0.1 sample messages. If handshakes fail, use troubleshooting WebSocket.
FAQ
What is an OCPP 2.0.1 simulator?
Software that pretends to be an OCPP 2.0.1 charge point: it opens a WebSocket to your central system, exchanges framed CALL / CALLRESULT messages (BootNotification, StatusNotification, TransactionEvent, and more), and lets you drive EVSE/connector states so the CSMS sees realistic 2.0.1 traffic without a physical charger.
Why not reuse an OCPP 1.6 simulator for 2.0.1?
OCPP 2.0.1 is not 1.6 with extra fields. Message names, the transaction model (TransactionEvent instead of Start/Stop/MeterValues), device model, and security expectations differ. Dual-stack CSMS code needs a dedicated OCPP 2.0.1 simulator path — not a 1.6 script with a renamed subprotocol.
Can I test RequestStartTransaction with this OCPP 2.0.1 simulator?
Yes. Once the station is accepted and a connector is available, send RequestStartTransaction / RequestStopTransaction from your CSMS and watch the correlated frames and TransactionEvent stream in the message console.
Does Chargeflux support OCPP 2.0.1 and 1.6 together?
Yes. OCPP 1.6J and 2.0.1 are supported today so mixed fleets and dual-stack CSMS code can be exercised on the same product. OCPP 2.1 is on the public roadmap without a promised date.
Is an OCPP 2.0.1 simulator enough for OCA certification?
No. Use it to prove integration behaviour and catch payload or session bugs early. Official OCPP compliance or certification still needs the process and tooling your market requires — Chargeflux is a development and CSMS testing tool, not an OCA lab.
Can I load-test hundreds of OCPP 2.0.1 stations?
Check current plan limits on the pricing page and API docs. Browser-driven sessions are ideal for functional QA; high concurrency is a separate capacity question from protocol correctness.
Prefer a full software-only path? Read test CSMS without hardware. Layers: EV charger testing. Concept overview: EVSE simulator (virtual charge point). Next step: run the OCPP 2.0.1 simulator or check pricing.
Last reviewed August 2026 · Chargeflux.io