Atmoce and KNX: control the battery and read PV measurements

The Atmoce gateway table in Link’nX maps the group addresses of your KNX project to the control of an Atmoce PV and storage system (remote mode, power setpoints, dispatch, restart) and to its measurements: statuses, powers, voltages, currents, state of charge and energy meters. A KNX visualization or logic can then read the battery status and send it setpoints.

Intended for installers and administrators authorized to configure PV and storage control. Force charge and Force discharge are not in this table: they are prepared with the Atmoce scenario actions.

Before you start

• The Atmoce gateway is declared in Link’nX.
• The group addresses, powers and limits of the installation are confirmed.

Open the Atmoce gateway table

1. Check the Link’nX project and gateway.
2. In Devices → Climate & Energy → Atmoce, find the physical gateway concerned.
3. Click its two opposing arrows, before the pencil. Gateway mode configuration opens.

The table applies to this gateway only. The address format, the filters and tab changes are described in the gateway table guide.

Map the KNX commands

1. In Actions, fill in the Address of each function you want and tick Active. The name and the DPT are set by the table.
2. Save the tab with the floppy disk at the bottom right and wait for Succès (Success) and Données sauvegardées avec succès ! (Data saved successfully!).

Function	DPT	Value and scope
Remote control mode	1.001	ON: remote control; OFF: gives control back to the local self-consumption or time-of-use (TOU) mode
Active power setpoint (W)	14.056	Fixed positive or zero power, in watts, within the installation’s limits
Active power setpoint (%)	5.001	From 0 to 100%
Dispatch power (W, signed)	14.056	Negative: charge; positive: discharge; 0: dispatch stop
System reset	1.001	Restart of the whole system, with the prerequisites below

Power setpoints require remote control, and stopping them does not give control back to the local mode. To resume local operation, send OFF on Remote control mode, then check Operating mode. The switchover delay and the effect on the installation show in the feedback, not at sending.

To deactivate an association, untick Active and save. This is neither a command to stop the battery nor a return to local mode.

Prepare System reset

System reset restarts the entire plant: PV, battery and gateway. It requires:

• a gateway running Modbus protocol V1.2 or later; the presence of the row in the table does not confirm your hardware’s protocol version;
• two activation telegrams within three seconds; a single telegram or an OFF does not trigger the restart.

Feedback can disappear during the restart. Have the need and the prerequisites confirmed by the installer or support before configuring this restart. Do not use it as a repeated test to bring back missing feedback.

Map the status feedback and measurements

1. Open the second tab, marked with a speech bubble.
2. Fill in the Address of the feedback you want, tick Active and save this tab too.

Feedback	DPT	Meaning
Plant fault	1.005	0 normal, 1 fault; this is not a component diagnosis
Storage status	5.010	1 charging, 2 discharging, 99 neither; 99 is not a battery percentage
Operating mode	5.010	1 self-consumption, 2 time-of-use (TOU), 10 remote control
Battery SoC	5.001	Percentage from 0 to 100
PV power, Battery power, Grid power	14.056	Power in watts
Voltage L1, Voltage L2, Voltage L3	14.027	Voltage in volts
Current L1, Current L2, Current L3	14.019	Current in amperes
Max charging power limit, Max discharging power limit	14.056	Limits in watts; these are not setting commands

To interpret the sign of Battery power and Grid power on your installation, ask the installer or support for confirmation before inferring a flow direction. This caveat concerns only these measurements: the dispatch command follows the sign convention of the commands table.

Energies use DPT 13.013 and are expressed in Wh. Each cumulative meter has a daily meter:

Cumulative meter	Daily meter
PV energy	PV energy (today)
Battery energy charged	Battery energy charged (today)
Battery energy discharged	Battery energy discharged (today)
Grid energy exported	Grid energy exported (today)
Grid energy imported	Grid energy imported (today)

Choose the meter that matches the period you want, and do not confuse a cumulative energy with an instantaneous power. For a very large meter or a capped value, have the usable value confirmed before calculating a balance.

Check the result

1. Go back to the list, reopen the gateway and review the addresses and Active checkboxes of each tab.
2. Then check the exchange on the bus, for example with the ETS group monitor, and the effect of a setpoint on the Operating mode and Storage status feedback. Saving the table validates the configuration; only the feedback and the installation show that a command was applied to the battery.

Troubleshooting

• Storage status is 99: this feedback means neither charging nor discharging, not a full battery. The percentage is read with Battery SoC.
• Operating mode stays at 10 after stopping dispatch or forcing: these stops do not request the return to local mode. Check the Remote control mode association, the sending of OFF, then the Operating mode feedback.
• A feedback is missing: check the project, the gateway, the feedback name, the address, the DPT, the Active checkbox and the save by reopening the table. Clear the filters if the row is hidden. A missing value is not equivalent to zero.
• A measurement per microinverter or per charger cannot be found: the feedback in this table describes the system attached to the gateway, not each individual device.

For a fault, an inconsistent value or a command without effect after these checks, contact support@can-nx.com with the project and gateway, the model, the function, the address, the DPT, the observed value and the tests already done.

French labels: Mode contrôle à distance, Puissance de dispatch (W, signée), Reset système, État du stockage, Mode de fonctionnement, État de charge batterie, Énergie PV (aujourd’hui).