Camillebauer Aplus
The Camillebauer Aplus is a panel-mounted multifunction power quality analyzer designed for power distribution, industrial environments, and building automation. This ModbusCloud template reads the device over Modbus RTU and exposes a complete electrical measurement picture: per-phase and three-phase voltage, current, active power, and reactive power, plus grid frequency. With all seventeen registers mapped and polled continuously, installers and facility managers gain a detailed, phase-resolved load profile without manual on-site readouts, enabling fast fault detection and energy reporting across single and multi-site installations.
- Protocol
- Modbus RTU
- Connection
- RS485
- Registers
- 17, read only
- Brand
- Camillebauer
- Last updated
Registers (17)
17 read, 0 write
| Name | Unit | Access | Address (Hidden until you enter your email) | Function (hidden) | Type (hidden) |
|---|---|---|---|---|---|
| voltage | V | Read | |||
| voltage_l1 | V | Read | |||
| voltage_l2 | V | Read | |||
| voltage_l3 | V | Read | |||
| current | A | Read | |||
| current_l1 | A | Read | |||
| current_l2 | A | Read | |||
| current_l3 | A | Read | |||
| active_power | W | Read | |||
| active_power_l1 | W | Read | |||
| active_power_l2 | W | Read | |||
| active_power_l3 | W | Read | |||
| reactive_power | var | Read | |||
| reactive_power_l1 | W | Read | |||
| reactive_power_l2 | W | Read | |||
| reactive_power_l3 | W | Read | |||
| frequency | Hz | Read |
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Use cases
- Monitor per-phase voltage on L1, L2, and L3 to detect supply imbalances before equipment is affected.
- Track total active power and per-phase active power to identify unbalanced load distribution across circuits.
- Alert on reactive power deviations to spot power-factor degradation in motor-heavy industrial environments.
- Verify grid frequency stability over time to correlate supply anomalies with production downtime events.
- Compare phase currents across L1, L2, and L3 to detect asymmetric loading and potential overload conditions.
Installation
Enable Modbus RTU on the Camillebauer Aplus using the CB-Manager software or the on-device configuration menu: set a unique Modbus address, baud rate, and parity to match your bus.
Wire the Aplus RS485 interface (terminals X4 or X8) to the ModbusCloud Gateway RS485 port using twisted-pair cable; use shielded cable in electrically noisy environments and connect GND to the screen.
In your ModbusCloud portal, add the ModbusCloud Gateway, import the Camillebauer Aplus template, and set the unit ID to the Modbus address configured on the device.
Verify the connection by checking the live value for the voltage register (address 99): a stable reading close to your nominal supply voltage confirms registers are being read correctly.
Things to watch for
All register values read as zero or NaN. What is wrong?
The Aplus only outputs valid float values when a measurement precondition is met. If voltage inputs are not connected or the system type is misconfigured in CB-Manager, the device substitutes a default value. Verify that the correct wiring system (e.g. three-phase four-wire) is selected in the device parameters and that voltage inputs are live.
Values look correct in magnitude but are clearly wrong in phase assignment.
The Aplus float32 registers use IEEE 754 encoding spanning two consecutive 16-bit holding registers, with the high word first. If your Modbus master reads word order incorrectly, per-phase values will be swapped or garbled. Confirm your gateway uses big-endian (high-word-first) word order for float32 register pairs.
The Gateway connects but no data appears after importing the template.
Check that the Modbus address set on the Aplus matches the unit ID in your portal, that baud rate and parity on the device and gateway agree, and that supply resistors are present at the bus master end. Up to 32 devices can share one RS485 bus, but each must have a unique address and identical communication settings.
Reactive power per-phase registers show units of W in the template. Is that correct?
The per-phase reactive power registers (reactive_power_l1, L2, L3) are listed with unit W in the template input but represent reactive power quantities. Treat them as var for display purposes. The total reactive_power register is correctly labelled var. Cross-check with the manufacturer register map if your installation requires certified metering accuracy.
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