I’m trying to integrate a Carlo Gavazzi EM24-E1-AV2 X meter into HA.
To do so, I’ve added these entries to the config.yaml file.
For testing, only with one sensor:
modbus:
- name: EM24
type: tcp
host: 192.168.1.10
port: 502
sensors:
- name: EM1 Phase 1 voltage
address: 0
slave: 1
unique_id: em1_phase_1_voltage
data_type: int32
device_class: voltage
input_type: input
precision: 2
scale: 0.1
state_class: measurement
swap: word
unit_of_measurement: V
In homeassistance.log I get the follwing error:
2025-07-06 16:22:31.047 WARNING (SyncWorker_0) [homeassistant.loader] We found a custom integration hacs which has not been tested by Home Assistant. This component might cause stability problems, be sure to disable it if you experience issues with Home Assistant
2025-07-06 16:22:33.481 WARNING (MainThread) [pymodbus.logging] Failed to connect [Errno 111] Connect call failed ('192.168.1.10', 502)
2025-07-06 16:22:34.137 ERROR (MainThread) [homeassistant.components.modbus.modbus] Pymodbus: EM24: Error: device: 1 address: 0 -> Modbus Error: [Connection] Not connected[AsyncModbusTcpClient 192.168.1.10:502]
What am I doing wrong?
I’m grateful for any advice.
I’d like to integrate multiple meters in the next step.
The connection works in the Carlo Gavazzi UCS7 configuration software:
I can also read the registers with Open Mod Scan:
