Modbus stopped working with rel 2021.7

Hardware
#1

Modbus of extrnal device no longer working!

after Update from rel 2021.5.4 to 2021.7 modbus ends with error!

my configuration.yaml:
modbus:

  • name: varta
    type: tcp
    host: 192.168.0.14
    port: 502
    sensors:

    • name: ‘Wirkleistung’
      unit_of_measurement: W
      slave: 1
      address: 1066
      count: 1

    • name: ‘Scheinleistung’
      address: 1067
      unit_of_measurement: W
      ‘and some more’
      values are ‘unavalaible’ with error message:
      Logger: homeassistant.components.modbus.modbus
      Source: components/modbus/modbus.py:237
      Integration: Modbus (documentation, issues)
      First occurred: 19:30:16 (1 occurrences)
      Last logged: 19:30:16

Pymodbus: Exception Response(131, 3, IllegalAddress)

However:
modbus of another device is working without errors!
what is wrong?

1 Like
Modbus new configuration style leads to unavailable sensors
#2

Please format your pasted configuration correctly. See point 11 here.

#3 
my configuration.yaml:

#################################################################
modbus:
  - name: varta
    type: tcp
    host:192.168.0.14
    port: 502
   sensors:
      - name: 'Wirkleistung'
        unit_of_measurement: W
        slave: 1
        address: 1066
        count:1
################################################`

`

#4 
type error in last reply!
correct:

modbus:
  - name: varta
    type: tcp
    host: 192.168.0.14
    port: 502
    sensors:
      - name: 'Wirkleistung'
        unit_of_measurement: W
        slave: 1
        address: 1066
        count: 1

      - name: 'Scheinleistung'
        address: 1067 
        unit_of_measurement: W
#5

Hi all,

same here, Modbus TCP stopped after latest update.

Second playground system with old SW still catches data.

Please let us know how to get it back.

Thanks

Mike

#6

My Modbus “serial” connection has also stopped working in 2021.7 and 2021.7.1. I believe that I am using the latest/correct syntax. The Modbus “tcp” connections are working fine.

My error is: Pymodbus: Exception Response(131, 3, GatewayPathUnavailable)

The problematic section in my modbus.yaml file is shown below:

# The following line is in the configuration.yaml file, so *not* repeated below
# modbus:
  - name: "em24"
    close_comm_on_error: true
    type: serial
    method: rtu
    # port: /dev/ttyUSB1
    port: /dev/serial/by-id/usb-FTDI_FT232R_USB_UART_AK08M9Q7-if00-port0
    baudrate: 9600
    stopbits: 1
    bytesize: 8
    parity: N
    timeout: 2
    sensors:
      - name: "Total Imported Energy"
        scan_interval: 30
        unit_of_measurement: "kWh"
        count: 2              # INT32/double-word value (otherwise values > 3276.7kWh go negative)
        swap: word            # EM24 uses reverse word order
        scale: 0.1
        slave: 1
        address: 62
        precision: 1

Note that I have tried both the “serial-by-id” and “/dev/ttyUSB1” options for the port, without success.

The problem goes away if I revert back to 2021.6.

1 Like
#7

Related issue here Unavailable Sensors

#8

Same here. All devices (sensors, coils etc.) are no working. Checked the latest documentation which shows no change in syntax.

#9

I have the same problem. After update to 2021.7.1 modbus no longer works. I have three devices running via modbus. All three interfaces are broken. An SDM630 electricity meter, a Corrigo ventilation unit and a Dimplex heat pump system. Pretty stupid, since all the important automatisms in the house are no longer running.
Someone knows what happened?

#10

Same here. Out of three identical SMA solar inverters, set up identically with HA, one (not always the same one) stops receiving data after a few hours. Since update to 2021.7. Other setups with OpenHAB working without any problems. Seems mdobus in HA is broken now somehow.

#11

Looks like modbus integration now stops on error.
Try adding this to modbus config:

    retry_on_empty: true
    retries: 10
#12

I have downgraded to version 2021.6.6 and now the registers reading are OK but the coil writing is still faulty. I did not check @dknt recommendation yet.
BTW, I have 7 different TCP Modbus units, some are Advantech, some are King Pigeon and some are USR.
All act the same.
Correction - After fixing the code to the new syntax, all is working under 2021.6.6.

1 Like
#13 
No change with adding the 2 lines. Same error:

Pymodbus: Exception Response(131, 3, IllegalAddress)
#14

Same issue on my Setup after upgrading to 2021.7.1.

Pymodbus: Exception Response(131, 3, IllegalAddress)

Modbus-TCP to Wallbox (Wallbe Eco 2s) → still working
Modbus-TCP to Energy-Meter (Siemens PAC2200) → still working
Modbus-TCP to Li-Ion Battery / Inverter (E3DC S10) → not working

####
# MODBUS Start
####
modbus:
  # E3DC S10
  - name: E3DC
    type: tcp
    host: 192.168.85.55
    port: 502
    retry_on_empty: true
    retries: 10
    sensors:
    - name: PV-Leistung
      slave: 1
      address: 66
      unit_of_measurement: W
      count: 2
      data_type: int
      device_class: power

    - name: hausverbrauch
      slave: 1
      address: 70
      unit_of_measurement: W
      count: 2
      data_type: int
      device_class: power
    
    - name: netzbezug
      slave: 1
      address: 72
      unit_of_measurement: W
      count: 2
      data_type: int
      device_class: power
      
    - name: batterieleistung
      slave: 1
      address: 68
      unit_of_measurement: W
      count: 2
      data_type: int
      device_class: battery
      
    - name: SoC
      slave: 1
      address: 82
      unit_of_measurement: '%'
      data_type: int
      device_class: battery
      
    - name: NEA-Status
      slave: 1
      address: 83
      data_type: int
    
    - name: ems-status
      slave: 1
      address: 84
      data_type: int

  # PAC2200 Wallbox Carport     
  - name: pac2200_carport
    type: tcp
    host: 192.168.85.93
    port: 502
    sensors:
    - name: pac2200_carport_spannungL1
      input_type: holding
      slave: 1
      address: 1
      unit_of_measurement: V
      count: 2
      data_type: float
      
    - name: pac2200_carport_spannungL2
      input_type: holding
      slave: 1
      address: 3
      unit_of_measurement: V
      count: 2
      data_type: float
      
    - name: pac2200_carport_spannungL3
      input_type: holding
      slave: 1
      address: 5
      unit_of_measurement: V
      count: 2
      data_type: float
      
    - name: pac2200_carport_stromL1
      input_type: holding
      slave: 1
      address: 13
      unit_of_measurement: A
      count: 2
      data_type: float
      
    - name: pac2200_carport_stromL2
      input_type: holding
      slave: 1
      address: 15
      unit_of_measurement: A
      count: 2
      data_type: float
      
    - name: pac2200_carport_stromL3
      input_type: holding
      slave: 1
      address: 17
      unit_of_measurement: A
      count: 2
      data_type: float
      
    - name: pac2200_carport_frequenz
      input_type: holding
      slave: 1
      address: 55
      unit_of_measurement: Hz
      count: 2
      data_type: float
    
    - name: pac2200_carport_wirkleistung
      input_type: holding
      slave: 1
      address: 65
      unit_of_measurement: W
      count: 2
      data_type: float
      
    - name: pac2200_carport_wirkarbeit
      input_type: holding
      slave: 1
      address: 801
      unit_of_measurement: Wh
      count: 4
      data_type: float
#####
# Modbus ENDE
#####
#15

I have enabled the debug logs - which show the following errors:

2021-07-12 10:31:34 ERROR (SyncWorker_5) [homeassistant.components.modbus.modbus] Pymodbus: Exception Response(131, 3, GatewayPathUnavailable)
2021-07-12 10:31:34 DEBUG (SyncWorker_4) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:34 DEBUG (SyncWorker_0) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:34 DEBUG (SyncWorker_1) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:34 DEBUG (SyncWorker_4) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:34 DEBUG (SyncWorker_4) [homeassistant.components.modbus.modbus] Pymodbus: Exception Response(131, 3, GatewayPathUnavailable)
2021-07-12 10:31:34 DEBUG (SyncWorker_0) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:34 DEBUG (SyncWorker_3) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:34 DEBUG (SyncWorker_5) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:34 DEBUG (SyncWorker_0) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:34 DEBUG (SyncWorker_3) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:34 DEBUG (SyncWorker_5) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:34 DEBUG (SyncWorker_0) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:34 DEBUG (SyncWorker_3) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:34 DEBUG (SyncWorker_5) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:34 DEBUG (SyncWorker_0) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:35 DEBUG (SyncWorker_0) [homeassistant.components.modbus.modbus] Pymodbus: Exception Response(131, 3, GatewayPathUnavailable)
2021-07-12 10:31:44 DEBUG (SyncWorker_0) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:44 DEBUG (SyncWorker_0) [homeassistant.components.modbus.modbus] Pymodbus: Exception Response(131, 3, GatewayPathUnavailable)
2021-07-12 10:31:44 DEBUG (SyncWorker_4) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:44 DEBUG (SyncWorker_2) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:44 DEBUG (SyncWorker_1) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:44 DEBUG (SyncWorker_0) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:44 DEBUG (SyncWorker_5) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:44 DEBUG (SyncWorker_3) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:44 DEBUG (SyncWorker_3) [homeassistant.components.modbus.modbus] Pymodbus: Exception Response(131, 3, GatewayPathUnavailable)
2021-07-12 10:31:44 DEBUG (SyncWorker_4) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:44 DEBUG (SyncWorker_2) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:44 DEBUG (SyncWorker_5) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:44 DEBUG (SyncWorker_3) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:44 DEBUG (SyncWorker_1) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:44 DEBUG (SyncWorker_0) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:44 DEBUG (SyncWorker_4) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:45 DEBUG (SyncWorker_2) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:45 DEBUG (SyncWorker_2) [homeassistant.components.modbus.modbus] Pymodbus: Exception Response(131, 3, GatewayPathUnavailable)
2021-07-12 10:31:54 DEBUG (SyncWorker_2) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:54 DEBUG (SyncWorker_2) [homeassistant.components.modbus.modbus] Pymodbus: Exception Response(131, 3, GatewayPathUnavailable)
2021-07-12 10:31:54 DEBUG (SyncWorker_1) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:54 DEBUG (SyncWorker_0) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:54 DEBUG (SyncWorker_4) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:54 DEBUG (SyncWorker_2) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:55 DEBUG (SyncWorker_2) [homeassistant.components.modbus.modbus] Pymodbus: Exception Response(131, 3, IllegalAddress)
2021-07-12 10:31:55 DEBUG (SyncWorker_3) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:55 DEBUG (SyncWorker_5) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:55 DEBUG (SyncWorker_4) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:55 DEBUG (SyncWorker_2) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:55 DEBUG (SyncWorker_1) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:55 DEBUG (SyncWorker_0) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:55 DEBUG (SyncWorker_3) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:55 DEBUG (SyncWorker_5) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:55 DEBUG (SyncWorker_5) [homeassistant.components.modbus.modbus] Pymodbus: Exception Response(131, 3, IllegalAddress)
2021-07-12 10:31:55 DEBUG (SyncWorker_4) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:55 DEBUG (SyncWorker_2) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:55 DEBUG (SyncWorker_3) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:55 DEBUG (SyncWorker_5) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:55 DEBUG (SyncWorker_5) [homeassistant.components.modbus.modbus] Pymodbus: Exception Response(131, 3, IllegalAddress)
2021-07-12 10:31:55 DEBUG (SyncWorker_1) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:55 DEBUG (SyncWorker_0) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:55 DEBUG (SyncWorker_3) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:55 DEBUG (SyncWorker_5) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:55 DEBUG (SyncWorker_4) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:55 DEBUG (SyncWorker_4) [homeassistant.components.modbus.modbus] Pymodbus: Exception Response(131, 3, GatewayPathUnavailable)
2021-07-12 10:31:55 DEBUG (SyncWorker_2) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:55 DEBUG (SyncWorker_1) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:55 DEBUG (SyncWorker_5) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:55 DEBUG (SyncWorker_4) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:55 DEBUG (SyncWorker_4) [homeassistant.components.modbus.modbus] Pymodbus: Exception Response(131, 3, GatewayPathUnavailable)
2021-07-12 10:31:55 DEBUG (SyncWorker_0) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:55 DEBUG (SyncWorker_0) [homeassistant.components.modbus.modbus] Pymodbus: Exception Response(131, 3, IllegalAddress)
2021-07-12 10:31:55 DEBUG (SyncWorker_3) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:55 DEBUG (SyncWorker_3) [homeassistant.components.modbus.modbus] Pymodbus: Exception Response(131, 3, IllegalAddress)
2021-07-12 10:31:55 DEBUG (SyncWorker_2) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:55 DEBUG (SyncWorker_2) [homeassistant.components.modbus.modbus] Pymodbus: Exception Response(131, 3, GatewayPathUnavailable)
2021-07-12 10:31:55 DEBUG (SyncWorker_1) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:55 DEBUG (SyncWorker_1) [homeassistant.components.modbus.modbus] Pymodbus: Exception Response(131, 3, GatewayPathUnavailable)
2021-07-12 10:31:55 DEBUG (SyncWorker_5) [pymodbus.client.sync] New Transaction state 'SENDING'
2021-07-12 10:31:55 DEBUG (SyncWorker_5) [homeassistant.components.modbus.modbus] Pymodbus: Exception Response(131, 3, GatewayPathUnavailable)
#16

Same here, i downgraded to 2021.6.6 for the time beeing.

i had hoped to get a full month of reliabel data on my solar gain and solar battery performance… maybe in august then… :roll_eyes:
this upgrade also seems to have messed with automations… my inverter turned on 9,5h early which ran down the battery while charging at the same time… i exported more energy than i am allowed, so i guess i will get to hear from my utility next time they look at my energymeter :upside_down_face: :wink:

1 Like
#17

Upgrade to “Home Assistant 2021.7.2” did not fix the issue.

1 Like
#18

The same for me.
I have 5 PLC’s that use Modbus IP and a heat recovery unit that uses Modbus RTU.
Both protocols no longer work since update 2021.7.1 so for now I will stay on 2021.6.6

#19

I’ve got it running, using this parameters on each Modbus Hub:

    delay: 5
    close_comm_on_error: false
    retry_on_empty: true
    retries: 10

Solved it for me!

Didn’t worked for long. At least now i become old frozen values instead of Zeros…

#20

My issue has been fixed in 2021.7.3 :grinning: