KEBA
How a KEBA KeContact connects to Joulo over OCPP, which series can reach a backend, and where MID sits in the article number.
KEBA splits by series, not by brand. Whether your KeContact can reach Joulo depends on the series. Whether it has a MID meter is a separate question, answered by the article number.
At a glance
| Property | Value |
|---|---|
| Route | OCPP 1.6J, on the supported series below |
| Endpoint | wss://ocpp.joulo.nl/{chargePointId} |
| Authentication | OCPP basic auth |
| Sync | Live, over the WebSocket |
| MID detection | Character IX of the article number |
| Backfill | Sessions from the moment the charger connects |
Which series can connect
| Series | Reaches a backend | MID |
|---|---|---|
| P30 a-series | No, offline basic model | No |
| P30 b-series | No | No |
| P30 c-series | No, Modbus TCP and UDP only | Optional |
| P30 x-series | Yes, OCPP 1.6J | Optional |
| P40 and P40 Pro | Yes, OCPP | Optional |
The c-series is the trap. KEBA's own comparison table shows a tick for OCPP on the c-series. There it is a client: up to fifteen c-series units sit behind an x-series that acts as master and OCPP hub. A c-series has no field for a backend URL, so Joulo can never reach it directly. Joulo does not sell that master setup as a route.
MID is a variant, not a series
MID sits in character IX of the article number, directly after the second hyphen:
| Character | Meaning |
|---|---|
M | MID, under 2014/32/EU |
L | MID plus Eichrecht |
E | Meter without MID |
0 | No meter |
This holds for the c-series and the x-series alike. "An x-series is always MID" is folklore, and buying one on that assumption is how people end up with a charger they cannot register.
What Joulo reads
Joulo stores start and stop transactions and the energy register samples that arrive during a session. Every frame is archived for support and disputes.
Limitations
- The c-series cannot reach Joulo on its own. Check your series before you plan a connection.
- Third-party software that reads the charger over Modbus and forwards it is not a valid measurement source for ERE registration. The certified meter has to be the source.