Schemas

Phase switching status as exposed on the phase_switching/status topic:

• idle — No phase switch in progress. Ready for a new request.
• progress — A phase switch has been accepted and is in progress. This covers the full lifecycle from request through the physical relay operation until feedback is received (or a 60-second timeout elapses and the previous phase is restored). The status returns to idle in all terminating cases — success, timeout, or abort.

The station has a finer-grained internal state machine (request → wait for permission → switching → feedback/timeout), but only the collapsed idle / progress values are published to this topic. Integrators should poll this topic and treat idle as "safe to issue the next command" without trying to distinguish sub-states.

IEC 61851-1 Control Pilot states:

• A — No vehicle connected
• B — Vehicle connected, not charging
• C — Vehicle connected, charging
• D — Vehicle connected, charging with ventilation required
• E — Error / no power
• F — EVSE not available

High-level behavior profile of the charging station. Determines how the station's internal regulator sets the offered current and how it interacts with solar/battery data, phase switching, and the configured min/max Amperes. See each value for the concrete side effects applied when switching into that mode.

Selecting a mode is persistent — the choice survives a reboot. Switching to an unknown value is silently ignored.

eco — Solar-surplus charging

The station tracks available PV / grid surplus and modulates the internal-lane current so the vehicle consumes (approximately) only what the PV system is exporting. It targets the configured min_amp as a floor and uses metering data (salia/mains/...) to decide how much headroom is available. With Power+ (salia/ecoplus) enabled, the station is allowed to supplement insufficient surplus with grid power; with Power+ disabled (default), it will pause rather than pull from the grid.

Side effects on switching into eco:

• salia/manctrl_limit is reset to max_amp (as on every mode change).
• Internal limit (ci/global/dyn_current_limit/internal_limit) is set to:
  • min_amp if the EV is currently charging (CP state C or D) — so the solar-surplus regulator can take over from a known-low floor.
  • max_amp otherwise.
• No automatic phase switch.
• ecoplus is not changed; whatever was previously configured remains.

power — Maximum-power charging

The station ignores solar surplus and delivers the highest current the hardware and configuration allow. This is the right mode for integrators that want a deterministic "charge as fast as possible" baseline on top of which an external controller can lower the current via grid_current_limit.

Side effects on switching into power:

• salia/manctrl_limit is reset to max_amp.
• Internal limit (ci/global/dyn_current_limit/internal_limit) is set to max_amp.
• salia/ecoplus is forced to "0" (Power+/Eco+ is disabled, because it is a feature of eco mode and has no meaning here).
• If phase switching is supported on the hardware (phase_switch_enabled), an automatic switch to 3-phase is triggered by publishing salia/phase_switching/setphase = "3". If phase switching is not supported, the station stays on whatever phase configuration it is wired for.

manual — Manual current control

The station does not run solar-surplus logic and does not force any phase change. The offered current is whatever the manual lane (salia/manctrl_limit) is set to — typically by the built-in web UI's current slider. External integrators writing to grid_current_limit still apply, since the effective offered current remains the minimum across the external / internal / manual lanes.

Side effects on switching into manual:

• salia/manctrl_limit is reset to max_amp (same as on every mode change).
• No change to phase, ecoplus, or the internal lane.

Choosing a mode as an integrator

• To control current from an external EMS / FEMS: use power (or manual) and then drive grid_current_limit. eco is unsuitable because the internal regulator will keep adjusting the internal lane based on its own solar-surplus view, potentially overriding your setpoint.
• If the offered current is not rising when you raise grid_current_limit, check the internal lane (salia/intctrl_limit) — see Current limit composition.