FENECON FEMS

Part of the compatibility overview, which lists every selectable Mains type.

• The REST/JSON app must be installed on the FEMS. Leave the communication type at REST API; Modbus TCP (port 502, Unit ID 1) is available as an alternative. The station uses the app's default credentials; do not change them on the FEMS.
• Only three values are read: total grid power, battery power and state of charge. Per-phase currents are not available, so the mains fuse protection cannot act on phase currents with this type.
• FEMS can additionally control the station over the station's REST API (current limit, pause). That is configured on the FEMS side.

Commissioning

Prerequisites: a station firmware that offers Fenecon EMS in the Mains type list (see the firmware download portal if the entry is missing), owner access to the FEMS, and both devices in the same network.

1. FEMS: log in to the FEMS with the owner credentials, open Settings → Plant profile and check that the REST/JSON app is installed. Install it if it is missing.
2. Station: under Configuration → Mains options set Mains type to Fenecon EMS and enter the IP address of the FEMS. A Fenecon Configuration block appears: leave REST API selected and disable the External heartbeat option. Click Save and reboot.
3. Check: after the restart, compare the Mains power and Battery values in the station's overview with the values in the FENECON app or web portal. They should match. If they do not, contact eCharge support before charging with ECO or ECO+.
4. Charge a vehicle in the different charging modes and watch that the station follows the surplus.