Boa tarde @JPatriarca ,
Tenho notado também os mesmo problema dos “8 bytes without response”. Acontece a cada 15 segs
Chegaste a alguma conclusão? Tenteu alterar varias coisas sempre com o mesmo problema na 2023.4
O meu HA esta a correr em docker. Logs do HA:
2023-04-14 19:31:05.540 ERROR (SyncWorker_10) [homeassistant.components.modbus.modbus] Pymodbus: eREDES: Modbus Error: [Connection] ModbusTcpClient(192.168.32.243:9999): Connection unexpectedly closed 2.574920654296875e-05 seconds into read of 8 bytes without response from unit before it closed connection
2023-04-14 19:31:20.551 ERROR (SyncWorker_5) [homeassistant.components.modbus.modbus] Pymodbus: eREDES: Modbus Error: [Connection] ModbusTcpClient(192.168.32.243:9999): Connection unexpectedly closed 2.6941299438476562e-05 seconds into read of 8 bytes without response from unit before it closed connection
2023-04-14 19:31:35.534 ERROR (SyncWorker_3) [homeassistant.components.modbus.modbus] Pymodbus: eREDES: Modbus Error: [Connection] ModbusTcpClient(192.168.32.243:9999): Connection unexpectedly closed 2.5272369384765625e-05 seconds into read of 8 bytes without response from unit before it closed connection
Modbus

No meu caso tenho um Elfin EE11, pelo que o WIFI esta fora da equação.
Abraço