Schneider Acti9 Smartlink
The Schneider Acti9 Smartlink is a DIN-rail energy metering and switchboard communication concentrator for low-voltage electrical distribution panels. It uses Modbus TCP to expose per-phase current and voltage, per-phase and total active power, reactive power, frequency, and cumulative production and consumption energy counters from connected PowerTag wireless energy sensors or wired metering devices. The Schneider Acti9 Smartlink template lets your ModbusCloud Gateway poll all 14 registers in one pass and stream readings to the cloud portal for real-time dashboards, historical trending, and threshold alerts, giving installers and facility managers a complete picture of panel load without opening the enclosure.
- Protocol
- Modbus TCP
- Connection
- Ethernet, Modbus TCP
- Registers
- 14, read only
- Brand
- Schneider
- Last updated
Registers (14)
14 read, 0 write
| Name | Unit | Access | Address (Hidden until you enter your email) | Function (hidden) | Type (hidden) |
|---|---|---|---|---|---|
| current_l1 | A | Read | |||
| current_l2 | A | Read | |||
| current_l3 | A | Read | |||
| voltage_l1 | V | Read | |||
| voltage_l2 | V | Read | |||
| voltage_l3 | V | Read | |||
| active_power_l1 | W | Read | |||
| active_power_l2 | W | Read | |||
| active_power_l3 | W | Read | |||
| active_power | W | Read | |||
| reactive_power | var | Read | |||
| frequency | Hz | Read | |||
| active_production_energy | Wh | Read | |||
| active_consumption_energy | Wh | Read |
Loading registers…
Send your device list
If a device is not in the library yet, we build the template for free as soon as we have the register data.
Use cases
- Monitor per-phase currents on L1, L2, and L3 to detect load imbalances across distribution circuits.
- Track cumulative active consumption energy over time to produce monthly tenant billing reports.
- Alert on total active power spikes to identify overloaded circuits before a breaker trips.
- Compare active production and consumption energy counters to verify net metering accuracy at the panel.
- Monitor grid frequency deviations from 50 Hz to detect upstream power-quality events in real time.
Installation
Connect the Schneider Acti9 Smartlink to your LAN using its RJ45 Ethernet port, assign it a static IP address via the built-in web interface, and confirm Modbus TCP is enabled under the communication settings.
Connect the ModbusCloud Gateway to the same LAN segment as the Acti9 Smartlink and verify network reachability between the two devices.
In the ModbusCloud portal, add a new device, select the Schneider Acti9 Smartlink template, enter the device IP address and the Modbus unit ID assigned to the target PowerTag or meter channel.
Trigger a manual poll in the portal and spot-check at least one register, such as active_power (address 3059), against the reading shown on the Acti9 Smartlink web page to confirm correct data.
Things to watch for
All registers return zero or no data after connecting. Why?
The Acti9 Smartlink acts as a concentrator: each downstream PowerTag or meter is accessed using a per-channel Modbus unit ID, not the gateway's own unit ID. Verify you are polling the correct unit ID for the specific sensor channel. The Smartlink automatically assigns unit IDs to wireless devices starting at 150 and upward; check the Smartlink web interface to confirm the assigned address.
Phase current readings look correct but energy counters read zero.
The active_production_energy and active_consumption_energy registers are uint64 spanning four consecutive 16-bit holding registers. Some Modbus masters fail to read a 64-bit value correctly if they request fewer than four registers or apply the wrong byte order. Confirm your polling configuration requests four registers starting at address 3207 (production) or 3211 (consumption) and uses big-endian word order as documented for this device.
The gateway connects but values disappear periodically. What is happening?
Wireless PowerTag sensors communicate to the Smartlink on a configurable reporting interval. If the Smartlink has not yet received a fresh value from a sensor when the gateway polls, it may return the last known value or a stale timestamp. Ensure the polling interval in the ModbusCloud portal is set longer than the sensor's wireless communication period, and check that the PowerTag is within wireless range of the Smartlink.
I see unexpected values on voltage registers after changing panel wiring.
The Acti9 Smartlink must be configured with the correct phase assignment for each PowerTag sensor. If the phase selection set during commissioning does not match the actual wired phase, voltage readings on voltage_l1, voltage_l2, and voltage_l3 will be misaligned. Recommission the affected sensor through the Smartlink web interface or Ecoreach software, selecting the correct phase connection.
Want to see how it works?
