CBB 3F QUEEN

Use cases

• Monitor real-time PV production from both MPP trackers on a cloud dashboard for your customer.
• Track battery state of charge remotely to verify self-consumption optimization throughout the day.
• Create an alert when battery SoC drops below a critical threshold or a fault status is reported.
• Adjust the battery grid minimum SoC setpoint remotely to adapt to seasonal consumption patterns.
• Log three-phase grid power and backup load data over time for energy audits and reporting.
• Compare per-phase grid voltages to detect imbalance or supply issues at the installation site.

Installation

1. 1Wire the RS-485 (A/B) connection from the ModbusCloud gateway (MCG or MLP series) to the Modbus RTU port on the OIG CBB 3F QUEEN.
2. 2Set the gateway serial port to 9600 baud, odd parity (1 stop bit), matching the default communication settings of the CBB 3F QUEEN.
3. 3Confirm or assign the Modbus slave address on the CBB 3F QUEEN and configure the same address in the ModbusCloud gateway.
4. 4Import the OIG CBB 3F QUEEN template from the ModbusCloud template library into your project.
5. 5Verify that PV power, battery SoC, and grid voltage readings appear correctly on the ModbusCloud dashboard before closing the installation.

Things to watch for

01

Why do PV power values appear incorrect or stuck at zero?

The PV power registers for MPP1 and MPP2 are int32 values that span two consecutive holding registers. Ensure your gateway is reading both registers as a single 32-bit value. If the register order is swapped, the reading will be incorrect.

02

What baud rate and parity settings does the CBB 3F QUEEN require?

The default settings are 9600 baud with odd parity (1 stop bit). Both the gateway and the CBB 3F QUEEN must use identical serial parameters, otherwise communication will fail.

03

Can I read the battery grid minimum SoC value without writing to it?

Yes. Register 40082 is both readable and writable. You can read the current setpoint at any time without affecting its value.

04

Is this template compatible with other OIG Batterybox models?

This template is specifically mapped for the CBB 3F QUEEN. Other OIG models may use different register maps. Using this template with a different model could produce incorrect readings or communication errors.

Registers (19)

19 read / 1 write

More RTU templates

Alnor HRU-P

Alnor Systemy Wentylacji Sp. z o. o.

Modbus RTU

Controls Alnor HRU-P heat recovery ventilation units via Modbus RTU.

49 registers7

Alnor HRU

Alnor Systemy Wentylacji Sp. z o. o.

Modbus RTU

Controls and monitors Alnor heat recovery ventilation units via Modbus RTU.

29 registers13

Wattsonic - Schmachtl Sun Energy Box

Wattsonic

Modbus RTU

Monitors Schmachtl Wattsonic hybrid inverter via Modbus RTU

92 registers72

Heidelberg Wallbox Energy Control

AMPERFIED GmbH

Modbus RTU

Controls and monitors Heidelberg Wallbox Energy Control EV charger via Modbus RTU.

22 registers67

connecdoor.controller

connecdoor

Modbus RTU

Controls and monitors smart door access points via RS485

0 registers53

Belimo Air-Water Actuator Modbus RTU

Belimo

Modbus RTU

Controls communicative damper and valve actuators via Modbus RTU.

20 registers46