The problem

I’m trying to read several registers representing real 32bits (IEE754). The modbus request is good, but I can’t get my 4 sensors - 32 bits floats (16 bit inverted).

Environment

• Home Assistant Core release with the issue: 2020.12.0
• Last working Home Assistant Core release (if known): 5.4.83
• Operating environment (OS/Container/Supervised/Core): Supervised (VM QNAP)
• Integration causing this issue: Modbus
• Link to integration documentation on our website:

Problem-relevant configuration.yaml

Multiple Modbus TCP connections

modbus:

• type: tcp host: 192.168.0.20 port: 502 name: S500

• type: tcp host: 192.168.0.25 port: 502 name: WAGO

#sensor:

• platform: modbus scan_interval: 10 registers:

  • name: modbus_group_h1 hub: S500 slave: 1 register: 42124 #register_type: input count: 4 data_type: custom structure: “>4h”

  • name: modbus_group_h2 hub: S500 slave: 1 register: 54247 #register_type: input count: 8 reverse_order: true data_type: custom structure: “>4f” precision: 1

• platform: template sensors:

Modbus Group H1

mdbgroup1_val00:
  friendly_name: "MdbGroup1_Val00"
  value_template: "{{ states('sensor.modbus_group_h1')[0] }}"
mdbgroup1_val01:
  friendly_name: "MdbGroup1_Val01"
  unit_of_measurement: "%"
  value_template: "{{ states('sensor.modbus_group_h1')[1] }}"
mdbgroup1_val02:
  friendly_name: "MdbGroup1_Val02"
  value_template: "{{ states('sensor.modbus_group_h1')[2] }}"
mdbgroup1_val03:
  friendly_name: "MdbGroup1_Val03"
  unit_of_measurement: V
  value_template: "{{ states('sensor.modbus_group_h1')[3] }}"

Modbus Group H2

mdbgroup1_val10:
  friendly_name: "MdbGroup1_Val10"
  value_template: "{{ states('modbus_group_h2')[0] }}"
mdbgroup1_val11:
  friendly_name: "MdbGroup1_Val11"
  unit_of_measurement: W
  value_template: "{{ states('modbus_group_h2')[1] }}"
mdbgroup1_val12:
  friendly_name: "MdbGroup1_Val12"
  unit_of_measurement: W
  value_template: "{{ states('modbus_group_h2')[2] }}"
mdbgroup1_val13:
  friendly_name: "MdbGroup1_Val13"
  value_template: "{{ states('modbus_group_h2')[3] }}"

Traceback/Error logs

[pymodbus.transaction] SEND: 0x0 0x8 0x0 0x0 0x0 0x6 0x1 0x3 0xd3 0xe7 0x0 0x8 [pymodbus.transaction] RECV: 0x0 0x8 0x0 0x0 0x0 0x13 0x1 0x3 0x10 0xcc 0xcd 0x40 0xfc 0x99 0x9a 0x41 0x29 0x33 0x33 0x41 0x63 0x33 0x33 0x41 0x4b

Additional information

On the example log, I would like to have : mdbgroup1_val10: 0xcc 0xcd 0x40 0xfc -> reverse order: true -> 0x40 0xfc 0xcc 0xcd = 7.9 f mdbgroup1_val11: 0x99 0x9a 0x41 0x29 -> reverse order: true -> 0x41 0x29 0x99 0x9a = 10.6 f mdbgroup1_val12: … mdbgroup1_val13: …