Good evening,
I am trying to establish a Modbus TCP connection to my Hoval heat pump and ventilation system. I can read many values, for values which are defined by the manufacturer as uint8 I get the following error in the log.
2022-12-18 22:20:25.758 DEBUG (SyncWorker_7) [pymodbus.client.sync] New Transaction state 'SENDING'.
2022-12-18 22:20:25.898 ERROR (MainThread) [homeassistant.components.modbus.base_platform] Received 2 bytes, unpack error unpack requires a buffer of 1 bytes
Here is my config:
configuration.yaml
# Modbus
modbus: !include_dir_merge_list integration/modbus/
integration/modbus/hoval.yaml
# Hoval
- name: hoval
type: tcp
host: 192.168.1.208
port: 502
close_comm_on_error: true
delay: 5
timeout: 5
sensors:
- name: hoval_hv_lueftungsmodulation_normal
unit_of_measurement: "%"
slave: 1
address: 23610
data_type: uint8
scale: 1
precision: 0
count: 1
scan_interval: 180
What can i do to get data for this address from modbus?