# BMR

> Supported devices: PLA33 & PLA33RX

Source: https://voltmasters.io/en/docs/device-integrations/energy-meters/bmr/

### Configure the meter

We need this software to configure the BMR.

![The PMS client application in the Windows app list.](https://voltmasters.io/assets/docs/unknown-12.webp)

1. **Open service mode**
   
   In most cases, the device is set to **DHCP**. However, it is still important to verify the **CT ratio of the main measurement**, to avoid incorrect main readings. Open the software and go to service mode.
   
   If necessary, this can be adjusted in the **Communication** tab.
2. ![The Communication tab of the meter software with the RS485 settings, the Ethernet address, Modbus TCP on port 502 and Modbus RTU over TCP on port 10001.](https://voltmasters.io/assets/docs/image-64.webp)
3. **Write the configuration**
   
   Next, we **click “Write configurations” twice**, search for the configured **IP address**, and enter it.
4. ![The toolbar with the write, import and export configuration buttons.](https://voltmasters.io/assets/docs/unknown-14.webp)
5. **Set the CT ratio**
   
   The last step, and the most important one, is to correctly configure the **current transformers (CTs)**.  
   In our case, **CTs with a ratio of 250/5** are used. This ratio can be read on the CTs installed on the main measurement, through which the power cable passes.  
   After that, we press **“Write config”** once more.

![BMR configuration software with connection type 3UN_3I and its three-phase wiring diagram, next to the network, transformer ratio and averaging settings.](https://voltmasters.io/assets/docs/unknown-16.webp)

> **Warning**
>
> When checking the **phasor diagram**, all same-color vectors should be close to each other. In this case, they are not, because **solar panels** are installed at the site. It is recommended to **temporarily switch off the PV system** and confirm the measurement again. Otherwise, an installation error may occur.

![Phasor diagram in the BMR software showing the phase voltages and currents of L1, L2 and L3, with a table of voltage, angle, current and cos phi per phase.](https://voltmasters.io/assets/docs/image-62.webp)