Home assistant modbus read register You can use 2’s compliment to turn e. coil: Coils are 1-bit registers (ON/OFF values) that are used to control discrete outputs. Modbus Sensor. With the next config it wont work, can anyone help me? modbus: name: hub1 # NIBES2125 type: tcp host: x. Hi, I have made some progress with my Modbus controller. Entity integration platform options Upper right hand corner under IOT class. In the documentation there is mentioned that it will switch to auto mode when in time = Answering my own questions. registers: - name: The problem I'm trying to read several registers representing real 32bits (IEE754). 1 precision: 1 Internal temperature address: 5007 data_type: int16 scale: 0. here's my config modbus: - name: ecl310 type: tcp host: 192. What version of Home Assistant Core has the issue? core-2022. ” Unfortunately, that means a register documented with an address of 1221 (Frequency) must be requested by sending an address of 1220 (04C4 hex) to the WattNode. 5 port: 502 sensor: platform: modbus registers: - name: A_Phase_Current unit_of_measurement: kW slave: 1 register: 1100 I’m not sure how the IAM module works, but I guess it sends Modbus over TCP so something like this should do it in your configuration. Everything is hooked up correctly to my ESP8266. In the docs of my heatpump it is listed as modbus code: 4x0013 which I am integrating my etrel inch car charger as well, but as a secondary modbus device. 6 port: 502 delay: 3 message_wait_milliseconds: 30 timeout: 10 sensors: - name: modbus_wallbox_WBID unique_id: modbus_wallbox_WBID [D][modbus_controller:032]: Modbus command to device=1 register=0x1683 countdown=0 no response received - removed from send queue. I have the following config but the register shows as zero when I know it’s not. Some modbus TCP clients will By starting with the basics (reading about modbus) and trying out writing/ reading registers directly (with the modbustool) I understood that there is no modbus-communication I want to read the venus modbus from victron (ccgx). I did create this file with the name modbus. With help of some forum samples, I was able to read live values based on offset used as address But now I would like to access the historical values, which are placed somehow in registers. Still trying to wrap my head around it to fully explain what is going on. Normally this is achieved reading two consecutive registers and then properly attach the 16 bit values. Additionally @Safs managed to get this working with a Elfin Module Hello, i’m trying to I think i posted this in the wrong channel In short, Using a ESP32-ROVER-kit and can’t seem to get the MAX483 to read this device And If i start reading ex: temperature like so Further LG peculiarities include mapping holding registers to input register space, so in hass you have to switch input_types to get correct values. The read is thus by using the echo returning the register value. The register/count/data you can read depends heavily on the device you use, firmware version, and also on the settings of the device (like float/int+sf setting makes a huge difference both in data reading methods and register addresses. Thankfully there is support in the modbus component now Home Assistant release with the issue:0. ” I’m trying to figure out what I might be doing wrong here. This sensor monitors outlet water temperature. Additionally, the entity associated with the power meter shows a status of “Unknown. Modbus. - platform: modbus scan_interval: 5 registers: - name: test2 hub: gmodcnv slave: 1 register: 6 register_type: input data_type: float structure: '>f' I try ‘<f’ and ‘>f’ but without luck. I’ve tried it in the same way as reading using addresses, but I’m Hi, I have an inverter from Solarmax, which I would like to read out with HA via Modbus TCP/IP. holding: Holding Registers - Holding registers are Hello I am controlling a CCN (carrier) HVAC using Homeassistant. The state on/off of a light is stored as unsigned int in a byte of a I have HA installed at home (running CORE in a docker container) and reading modbus registers (about 20 every 60 seconds) of my Motorhome inverter over LTE. However, I would like to have Hi I’ve spent hours trying to get my ventilation unit to connect to home assistant. It’s already possible to read and write the registers when using the modbus component. I’m sure its something trivial, but I havent figured it out yet. Hello, I’m using the Modbus integration to connect my HA to my air condition. So when you configure your sensors/switches in HA you need to choose the correct input_type. The TUF Continuing the discussion from Modbus switch - write specific bit in holding register:. I tried to integrate the values from my heatpumpt (lambda EU13L) via modbus, but nothing happens. I couldnt find water pressure on datasheet. timeout: 5. 4 Description of problem: binary_sensor allow reading of coils but not input_bits_register modbus function code 02: Additional information: https://libmod Hello all , I am trying to move from serial connection of Modbus to Modbus , TCP, need some help with the settings: Using: USR-DR302 I did the following settings in the module and the following in HA: modbus: - type: tcp host: 192. The output is RS485 via RJ45. The moment temp hits After a quick google search on “modbus home assistant” there seems to be a pretty thought out module for this, suprisingly since modbus is mostly used with industry and building management automation. Im reading all registers on datasheet. The problem is that when I set it up it jups between the auto mode and the ModBus mode. Reload to refresh your session. The only progress I’m aware of is a work-in-progress pull request from 12 days ago to allow multiple hubs: Personally, I don’t have any hope that there will be a timely resolution for Hello everyone, since yesterday we have solar panels with a Sungrow SG5. I’m able to read data as current temperature but I’m not able to setup. Hello, I spent already more than a week to get this working, but I still can not achieve the result I want. Setpoint. ” Unfortunately, that means a I have many modbus devices connected to serial RS485/modbus network in my home. sensor: - platform: modbus registers: - name: Battery hub: victron unit_of_measurement: "%" slave: 100 register: 843 I am getting the response: No response from hub victron, slave 100, register 843 What am I doing wrong? See Modbus - Home Assistant For reading, see sensor and binary_sensor on the same page. It is simply not possible to scan every register in every device I would run out of steam! I’m not sure how the IAM module works, but I guess it sends Modbus over TCP so something like this should do it in your configuration. 2. Integration causing the issue. name (Required): Name of the switch. I have made all setup and I’m able to read temperature (Current Temperature, Manual Temperature and Auto Temperature) - modbus sensor. I can as well read status of Thermostat and setup status as well (modbus switch). I dont see the problem to send values below 0. 199 port: 502 delay: 3 timeout: 5 sensors: - name: pressione_caldaia scan_interval: 10 address: 0002 unit_of_measurement: bar count: 1 scale: 0. Unfortunately to get the status of a single switch, there are no dedicated READ COIL follow is available： Modbus Binary Sensor 01 Read Coils Modbus Sensor 03 04 read holding Input registers Modbus swit I want to used modbus in homeassistant. But I cant get the structure right. 0 port: 5020 # senor. with value: [0x0000, 0x42a0] I can write the value 80. I have heat pump from Acond which support communication over ModBus. 168. via presence or a movement in the bathroom. In the docs of my heatpump it is listed as modbus code: 4x0013 which Hi all, I am writing a modbus integration for the Itho HRU 400. But after adding some modbus sensors to Home Assistant, it seems that the values aren’t Hvis du har satt opp modbus slik at du kan bruke modbus. This means that you're not reliant on FoxESS's Hi, I just wanted to share my successful learning experience with Modbus TCP, Home Assistant, and electric car charger. My primary modbus device is an RTU over IP device which i adress with the integrated tcp protocol. I can also read this out. solax name: "${prefix} PV1 Input Voltage" address: 0x400 register_type: read value_type: U_WORD accuracy_decimals: 1 unit_of_measurement: V device_class: voltage state_class: measurement filters: - multiply: 0. I got the description of the modbus protocol from the manufacturer Microsoft Hey there, I am trying to connect my heatpump to home assistant via modbus. Modbus TCP & Control of Cerbo GX/Quattro. Now I am trying to build the new version of this setup using the new Raspberry PI OS and Home Assistant 2022. #configuration. yaml: modbus: name: villavent type: tcp host: port: 8234 You need to input the IP address of the IAM module and the port number. My My PV battery unit has a modbus interface to read the values from. This is sensor that read When you press the inject node button, the Modbus server will be used to read the Modbus registers. is defined Hi Folks! This is my working config for Compleo / innogy eBox professional. Using oModbusMaster I can set and read holding registers over my Hello, I am currently using modbus switch successfully in my config. I am using QModMaster to decode the communication and so far i got this: Holding register 0x03 to read the variables. 0x03 is read holding registers and 0x04 is read input registers. The way I read it, updates are pushed to HA hence the IOT class of push. If I use the following data_type: custom structure: ">3H" I only get the first register I would like to have a slider entity representing the temperature in a particular room (Celcius) that is synced with the HVACs modbus register (deci Kelvin). The spec for the coil register is: Function call: 0x01 Register address: 0x01 Byte count: 2 Byte 1: coils output (bitwise) x, x, 14, 13, 12, 11, 10, 9 Byte 2: coils output (bitwise) 8, 7, 6, 5, 4, 3, 2, 1 My configuration. It work fine when i sent values abowe 0 but not under. 600? Home Assistant Community Modbus write negative value to register. Hello Community, I’m at the very beginning with home assistant and I’m trying to integrate Sentron PAC3200T. Note: Remove this section if this PR does not have an example entry. Everything was working just fine but after latest update I cannot read one of the sensors defined in modbus config file anymore. My heat pump has a special modbus implementation where some registers can only be read using a dummy 0x06 write function. What was the last working version of Home Assistant Core? core-2022. So how do you configure HA to read the 1xxxxx addresses? “Discrete Input”? Ok, I tested it. I’ve managed to add all the sensors and basic temperature As documented here: How to connect to Nibe heat pump without the cloud I’m running a Nibe heat pump, water tank and control unit. Interestingly Hello everyone, since yesterday we have solar panels with a Sungrow SG5. The modbus_controller component creates a RS485 connection to either:. Not much difference, input is read only, but the protocol uses a different function code for handling both. Tthe following seems not to work: sensor: - platform: modbus registers: - name: Host 1 Ch 5 unit_of_measurement: °C register: 5 count: 1 register_type: input data_type: int scale: 0. And after looking into some bluetooth adapters and different modbus configurations I decided to I’m setting up a couple of generic modbus devices (current sensors and relays), each with 8-16 “channels”, meaning I need to read/poll in total maybe 24-50 registers many You signed in with another tab or window. I’ve tried it in the same way as reading using addresses, but I’m Maybe you are supposed to convert the register number to an address. I’ve connected a Nibe S1255 to HA through Modbus. 12. " captive_portal: uart: id: mod_bus rx_pin: GPIO17 tx_pin: GPIO16 baud_rate: 9600 stop_bits: 1 modbus: uart Note: Remove this section if this PR does not have an example entry. 3). And after looking into some bluetooth adapters and different modbus configurations I decided to give it a shot. Btw. With this example it’s possible to switch between fan-mode 0 and 2 (on and off). host: 192. 1 - platform: modbus_controller modbus_controller_id Hello, I want to make 2 modbus connections with my Solax en Nibe Heatpump. here's my config. SO I can read single digital bits OK, and I can write single digital bits OK, this I am doing with a switch component linked to a specific “Coil” I can also read integer values OK, but where I am struggling is to write out an integer value, for example the I am integrating my etrel inch car charger as well, but as a secondary modbus device. Now checking it this morning the update was performed at 2:10. yaml and integrated it into the configuration. I try to describe my scenario. 8 port: 502 timeout: 5 sensor: - platform: modbus scan_interval: 300 registers: - name: Hello, I spent already more than a week to get this working, but I still can not achieve the result I want. Write single register 0x06 t Solution updated below for Elfin EW11 and EPEver eBox-Wifi-01 in August 2021 for Modbus changes in core 7. How can I realize this feature w Tried reading a different holding register, that holds the same value but with no luck. I divide my configuration. How I can read a “double registry” ? The yaml extras is: uart: rx_pin: GPIO3 Hi everybody! Taking first steps in HA and decided to connect solar inverter directly to HA Modbus integration. 117 kindly advise What is the address refer to ? What is the address for the holding resiter ? - name: SW008 Read Holding Registers (FC3) Read Input Registers (FC4) Write Single Coil (FC5) Write Single Register (FC6) Write Multiple Coils (FC15) Write Multiple Registers (FC16) I have tried translating this all into home assistant I have made a Modbus MitM module for my Growatt Inverter. yaml # sensor configuration stays as is - platform: modbus scan_interval: 1 registers: - name: button_1 hub: power_main Hello markus, thank you very much for your tip with the shelly pro 2. yaml usind the modbus platform Looks like you did not read the doc. I’ll jave to wait until the sun comes up to see if it actually works. The manual also states the data Next you need to activate the Modbus communication to HA (Home Assistant). However, what annoys me a little is, that the weishaupt Edit, please read first: The working ESPHome custom component can be found here. Each activation of any switch activates Hi all, I have a Modbus controllable VFD for an air extractor which I want to regulate with a HA input_number. After restart Hello everyone, I need advice about reading discrete inputs in esphome modbus. Unfortunately I can’t get it to work and since this is the first time I’m using modbus I don’t know where to start troubleshooting or even Data will be read complete locally by Modbus RS-485 RTU and share it via MQTT. I have created a sensor which reads the value of the dimmable light and it works great: sensor: - platform: modbus registers: - name: stuespotssensor hub: SmartHouse slave: 1 register: 1129 Then i created a light template like this: - platform: template lights: Hello markus, thank you very much for your tip with the shelly pro 2. There are also a lot of Four type data: Read the internal data within the meter in line with IEEE-754 standard floating-point number, data format is 32-bit 4-byte single-precision floating-point data Greetings to the community. Hi, I am trying to integrate my HVAC system into home assistant that supports Modbus RTU. 0; Last working Home The Modbus specification says “Registers are addressed starting at zero. I’ve got the basics working well, but there are a few parameters that are a bit more I have already read relatively far into HA and Modbus. They may be read and/or written. Adhering to the above two rules and “everything” now works follow is available： Modbus Binary Sensor 01 Read Coils Modbus Sensor 03 04 read holding Input registers Modbus swit I want to used modbus in homeassistant. , backup capabilities, DO-related, ) The Modbus register mapping is based on two documents the Sungrow support sent me (my current It seems the modbus. I’m new to everything HA and it’s the middle of the night so that will be a task for Modbus connection from CTC GSi to Home Assistant via nodemcu and Esphome connectet to display of ctc by 6 wire rj12 cable. What was the last Looking at the docs, I think 768 is an input register, not holding (default). Since Hello Bard, I have a question, how do I see the entity sdm120 created by home assistant? I used your code and on node red I see the electric quantities, but I did not understand how to transfer them to HA. Also using “count: 2” is telling home assistant to read address 3060 and 3061, by adding datatype float32 to the mix might confuse it to read 3060-3063 as one modbus address is only 16 bit big. Greetings to the community. Hello, I’m trying to read the values of this power meter, but they always show the value of 0. scan_interval: 300. it took 2 hours and 40 minutes to get the Ok, I tested it. The moment temp hits Appendix B of the Solaredge power control document gives the necessary steps to allow changing the charge / discharge mode of the battery, but essentially all that you need to do is change the "Storage Control Mode" selector to "Remote" (it is usually set to "Maximise Self Consumption") and then select a mode using the "Storage Default Mode" selector. You switched accounts Hello together, I’m setting up a fully Modbus controlled HVAC system in Germany (getting a little hot in here). 1 precision: 1 This I'm having trouble reading a modbus heating unit using home assistant config. ; register_type (Optional): Modbus register type (holding, input), default holding; unit_of_measurement I have been using Modbus RS-485 with XRUSB adapter for reading data from solar charge controller with Home Assistant 0. When configuring more than 40 sensors (when reading a solar panel inverter) and the HA server is a raspberry pi it is not possible to have a scan_interval of 10 seconds. Hi i want a automation to write a negative value to a modbus register. client import ModbusTcpClient import Are there any Modbus experts out there ? To be fair its probably just me not understanding how to configure HA. Have been working on this modbus integration. I can read the register with the following sensor settings: input_type: holding Hi, I have the home automation base on a WAGO PLC with modbus support. Hello! Yes it is an Östberg Heru Energy Recovery Unit model 100 S EC -V1. It work . com/temperature/) and it has registers This is the C function that I am using to read the 8 bit digital inputs in a single request. Many Unable to write negative values to registers (example : -100) error message says value must be at least 0. register (Required): Register number. . The question is thus, does custom command using a 0x06 fc return the modbus_response back for me to use a Hi, anyone having an example how to read a special register via modbus protocol with ble_client? to create a sensor and display it. 0x1 (this is the slave address you specified in your config, and matches your document) Function Code: 0x3 (valid register reading code according to your Hello everybody. I thought by reading a input register from the Modbus would directly read what is in the register. To stop short cycling of compressors, I write setpoints using the following automation. 4. This integration should be available in the HACS default repository. 91. The listet entities is exactly what I’m missing. yaml: modbus: name: villavent type: tcp Maybe you are supposed to convert the register number to an address. 0: service: modbus. The datatype is 32int. And I’m getting to read a register with count of 8 Can you post what registers you are trying to read into Home Assistant? 40000 register is also not valid. 1°C. Is it possible to do this using HA without using an external python script like this one? from pymodbus. I went to bed about 11:30. 0: Feel the energy ️ - Home Assistant You can Hi, I need to read a floating point (32 bit) value from a device via ModBus RTU. I have never looked into modbus before but after reading this thread I ordered a waveshare RS485 to ethernet adapter from amazon. The modbus config: - name: register (Required): Register number. My setup contains so far: Modbus-Integration (ebox_modbus. I’m having a tough time pulling registers from my Modbus TCP/IP power meter. I try to thoroughly test features before releasing them, but I cannot test everything (e. write_register osv som postet over, kan du prøve: service: modbus. How can I troubleshoot this? modbus: type: tcp host: 192. Note some are commented out, so turn items on and off as needed. They use SAJ HS2 Inverter. Also setting I’ve successfully implemented my IEM3155 Energy Meter in ESPHome using Modbus and I can read all relevant registers. The weird thing is, when the value in the modbus device increases, so does the read value in Hello all , I am trying to move from serial connection of Modbus to Modbus , TCP, need some help with the settings: Using: USR-DR302 I did the following settings in the module and the following in HA: modbus: - type: tcp Hello, I am using an Eastron Modbus energy meter to monitor the power consumption of my house. 0015259 precision: 1 - platform: modbus 2 registers: - name: Host 2 Ch 5 unit_of_measurement: °C register: 5 count: 1 register_type: input data_type: int scale: Hey there, I am trying to connect my heatpump to home assistant via modbus. discrete_input: discrete input register (read only coil) are similar to coils but can only be read. The function code are in essence register types e. According to the manual, if I read the holding registers 0 - 6 I get the 14char serial number. Rickardnr1 (Rickard) February 23, 2019, 3:46pm 1. My first topic is to read values from my solar inverter (Fronius Symo). g. So when you Next step i tried a simulated slave using ModbusView to verify what actually happens. modbus You signed in with another tab or window. (Think of setpoint as thermostat temperature). The flow meter is TUF-2000M on aliexpress or Amazon. yaml `- platform: modbus registers: - I’m trying to read several values from my Remeha Elga Ace heatpump over modbus. Looking at the logs it appears that the ESP sends the right registers (Optional): A list of relevant registers to read from/write to. After reviewing config I realized that same register is used under the climate entity to show the temp Hello, I need to write using modbus values to the EV wallbox, but the wallbox cannot write using the function in HA write_register, but only supports writer_registers, which I can do, for example, using an external python script. You signed out in another tab or window. Now I want to connect the meter with RS485 to USB converter and read it using the modbus integration of home assistant. 1. However, what annoys me a little is, that the weishaupt Hi, If I were in your place I’d start with smaller register arrays to get a general knowledge if that retrieves any data at all. Charging Station, I’ve taken the initiative to integrate the Unite Modbus table register settings into Home Assistant. Here is the information and I hope it helps. Next step is to create a switch for turning on/off I am having trouble understanding how to correctly read more than 1 register via Modbus at a time. @home-assistant rename Awesome new title Renames the issue. I Hi, I have thermostat on Modbus. My YAML I am getting an exception thrown due to the modbus request being invalid. You can either use Hi Peter, thanks for your fast reply. 107. As Oscar Knapp has pointed out on several occasions, you need to decrease the Modbus register address by “1” for correct results. Once this is set up you need to test it with a sensor. Don't forget to restart Home-Assistant. net. I have already found a similar work-around: For the SG_ready input I use a shelly1 and for the circulation pump I have a shelly plug so that I can switch it via the smarthome application - e. For now, you can have all sensor value, and update humidity and modulation in “Constant mode” ### The problem Each read is a modbus transaction, causing a higher than needed system load on both the HA server and the modbus device. We And I’m getting to read a register with count of 8 . Some command didn’t work on my controller, but they might work on yours. While I get the 14 sensors populated with data, the sequence is not correct. Right now I can control it from ESPHome using the Modbus number component, but that is non Continuing the discussion from Modbus switch - write specific bit in holding register:. I have a controlbyweb modbus device (http://www. command_off (Required): Value to write to turn off Hi, I have the following Modbus RTU Relay unit (Protocol Manual of Modbus RTU Relay - Waveshare Wiki) that integrates 8 switches that are controlled using simple WRITE COIL registers (one for each of the 8 switches). I found Home Assistant. x port: 502 delay: 1 timeout: 3 retries: 3 retry_on_empty: true message_wait_milliseconds: 250 name: hub2 # SolaxX3 type: tcp host: x. In the configuration. I hope this helps others who are new to Modbus or Hi, I’ve been trying to setup my Enervent LTR-5 Z with an eAir controller via Modbus TCP in Home Assistant. yaml: modbus: name: E3DC type: tcp Good morning, I am trying to communicate with a Schneider PM3250 energy meter via Modbus RTU. (This switches on compressor and it slowly brings temp to 11). x port: 502 delay: I have a Sungrow SH10. But when I try to get the sensors to work I am out of luck. I opened this topic to ask you for help configuring the relay board R421A08 My configuration: raspberry pi2, and this USB to RS485 adapter (This adapter works well with raspberry + hassio because I use it to read energy consumption data from an EASTRON SDM220-MODBUS. ) I did some tests and I could not make the R421A08 relay Code owners of modbus can trigger bot actions by commenting: @home-assistant close Closes the issue. There are seven integer holding registers, five for reading from the D1 and two for writing to it. For example Register 0101 is holding Voltage h Hi Folks! This is my working config for Compleo / innogy eBox professional. 63 port: 502 sensors: - name: Zisterne1 slave: 1 address: 1024 input_type: holding data_type: int scan_interval: 5 precision: Guys, I found it. Also using “count: 2” is The Modbus specification says “Registers are addressed starting at zero. The whole thing shares quite a lot of I have a Wemos D1 programmed in Arduino connected via Modbus RS485. Skærmbillede_20221107_151819 380×570 14. Some modbus TCP clients will send the function code as the 4 and the registers afterwards as 0000 but there is no register 0 on a GX, starts at 3. For anybody interested this is for heta pump Olimpia Splendid - modbus control via home assistant: Need to go to service menu (code probaly 829) and choose remote management=1 Climates etc work easy For mode selection you just send in decimal the appropriate binary combination Hello, I have working modbus configuration but I need to swap double-bytes in float. sensor: - platform: modbus registers: - Then for the read coil verification, by default HA will just read back from the same register Function code 1, address 00 04, value 00 01 NOTE HA is sending 00 04 00 01 and Target device is an SMA Solar inverter which have modbus enabled on tcp/502. - name: ecl310. I have been able to read all the reading registers as sensors in home assistant and use them in a dashboard. 5 Component/platform: sensor/modbus Description of problem: I am getting an I am currently reading a DTSU666-H 250A with current transformers (I think there is no difference communication wise to the model without tranformers) via a modbus RTU to I’m a beginner and after multiple tries, I was able to read Modbus registry from an energy meter. (all is open) More info at GitHub - nliaudat/esp_canbus: Esp32 Canbus Shield. It would be awesome to have the possibility to read event this kind of inputs. e. I’ve already established a working connection. So far I am able to control the outputs but the setup for each output is as follows - platform: modbus_controller modbus_controller_id: control_2 address: 0x0002 register_type: holding name: "test 22" write_lambda: |- bool open = x == 1; Hi, I have made a dedicated pcb and esphome firware to link hoval. 1 How-to connect an Epever / Epsolar Tracer solar charge controller to Home Assistant. For example, as part of my Modbus config I wanted to insert this entity: I am trying to improve my SolaX ModBus implementation by reading multiple registers at once. Any tips or suggestions would be greatly appreciated. 178. --> ```yaml # Example configuration. I need to read the address 0x0032 flow switch. johanpza started this conversation in Ideas. 1 precision: 1 data_type: uint Hassio can to Maybe you are supposed to convert the register number to an address. Last Victron register is currently 3826. Environment To reduce the workload on my Solar Inverter I am trying to read multiple registers in a single transaction. I just want to control my Weishaupt Heatpump in my home network without registering(!) on someone else’s (cloud) computer. command_off (Required): Value to write to turn off the switch. But still it doesn’t work for me. I am already reading the holding register from a Modbus TCP, succesfully. Reading values from the inverter and presenting them to another Modbus Client (Master) works fine. The manufacturer wrote back to me: To read 0×0032, we need to change the address from 0×0032 to 0×0030 and then offset 2 bits to get the status of 0×0032. My mistakes where: All Modbus SunSpec registers over address 40000 is apparently holding registers not input ones, even if they are read-only. yaml modbus: name: caldaia type: rtuovertcp host: 192. write_register service, e. 93. The Epever eBox-WIFI-01 I tried first was bricked when attempting a by-the-book firmware update before I had a chance to test it with HA. In this initial phase, I’ve successfully added these settings, paving the way for enhanced Configuration variables: registers array (Required): The array contains a list of relevant registers to read from. Any tips ? Home Assistant Community MODBUS data_type: custom. It is quite useful therefore to combine register reads using the modbus commands that do read multiple registers in one go. ZioTibia81 October 6, 2017, 8:16pm 2017, 8:55pm 4. Modbus connection from CTC GSi to Home Assistant via nodemcu and Esphome connectet to display of ctc by 6 wire rj12 cable. I think you would I’ve succeeded using the modbus. I’ve recently purchased a modbus RS485-to-TCP interface from Aliexpress, to control my Systemair SAVE VSR300 ventilation unit from Home Assistant. I can now read temperature value from it using Modbus TCP. The scale comes on register 40084 as a value 0, -1 or -2, that gives the scale for register I want to read the venus modbus from victron (ccgx). The thing I’m stuggling with is how to control ESPHome Modbus with an input_number. My integration relies on the ModbusTCP protocol which is supported by Home Assistant. 4 KB. I have recently migrated a water management system across from Mango Automation, which I was happy Hi, be patient I’m a newbie Already I read the registers of my inverter successfully. write_register data: hub: plenticore10_mb slave: 71 address: 1044 value: - 0 - 17056 Now I am struggling to come up with a value_template that can actually take a sensor/input reading and convert that into the Hi, I have an e-term device, connected using Modbus TCP/IP. Now I would like to write some registers, for example: I want to write a register to set the operating mode of the AC according to: 1: Heat mode; 2: Domestic hot water: 3: Cool mode Home Assistant. command_on (Required): Value to write to turn on the switch. Instructions how to I'm having trouble reading a modbus heating unit using home assistant config. Now I want to be able to set the flow of my 4 zones by using an input_number and an automation. The modbus request is good, but I can't get my 4 sensors - 32 bits floats (16 bit inverted). Last night I run some test through the Service tester in Development Tools. Hello, i want to write a Modbus Register using the Modbus Integration. ; register (Required): Register number. In the meantime, I read out data via the Modbus integration with Home Assistant and display various values. Modbus Controller¶. Until now I was able to set the serial connection and I’m reading some registers through Modbus Sensor. _client. Modbus Function Code 1 (Read Coil Status) will be used. - platform: modbus. Until now I was able to set the serial connection and I’m reading some registers through Modbus Can you post what registers you are trying to read into Home Assistant? 40000 register is also not valid. yaml so I have to edit 3 files: Smart battery Sense ModBus Data stream registers. 1 precision: 1 This yesterday i received my raspberry pi 4, and I managed to install HA successfully (i never touched a raspberry pi before, and I am new to home assistant, too)! 🙂 Several integrations work well (tibber, homematic IP, fritzbox,), and I started playing with the dashboards. yaml # sensor configuration stays as is - platform: modbus scan_interval: 1 registers: - name: button_1 hub: power_main Hi, I am trying to follow Brink Flair 325 Heat recovery unit ESPhome modbus integration (~$5). I used this code as an example: sensor: - platform: Between my little knowledge about modbus, no reaction from HKS about remote access and Carel modbus documentation with sentence “Can be modified to manufacturer needs” i am stuck. I opened this topic to ask you for help configuring the relay board R421A08 My configuration: raspberry pi2, and this USB to RS485 adapter (This Target device is an SMA Solar inverter which have modbus enabled on tcp/502. yaml `modbus: name: kwh_meter type: serial method: rtu port: /dev/ttyUSB2 baudrate: 9600 stopbits: 1 bytesize: 8 parity: E # sensors. I´m able to read the modbus register from the inverter, the problem comes when i realize that the scale changes depending on the power output from the inverter. read_holding_registers(40069, 137) But this is not working for me. I will ad Using the eBOX-TCP-02 RS-485 to an 80amp solar charge controller. I try to use modbus climate. I managed to connect my Nodemcuv2 with RS485 and then with the device I want to control - HRV unit. slave (Required): The number of the slave (can be omitted for tcp and udp Modbus). yaml) modbus: - name: modbus_wallbox type: tcp host: 192. Environment. However, on my ESP32 the sensor values remain solidly unknown. Note the transformation # configuration. I want to display the current AC power produced in Home Assistant with Modbus. UPDATE: Resolution below I cannot integrate this flow meter into ESPhome via MODBUS. After this you need to create, if not there, a file How to read / write multiple values in modbus? Hi! I have setup my modbus for my heatpump and it works through climate. Is there anyway to read Water Pressure of LG Therma V ? Hello I am controlling a CCN (carrier) HVAC using Homeassistant. for example: I need to write this: address 28301 value 1 address 28302 "Hello! As a delighted user of the Webasto “Unite” (and Webasto Next soon) Charging Station, I’ve taken the initiative to integrate the Unite Modbus table register settings So I was looking for a way to get data from my SRNE Solar charge inverter. I used Modbus Client X so I was sure that it worked before importing it to Home Assistant ModbusClientX - Modbus Tool download | SourceForge. x. node red is installed on HA. SO I can read single digital bits OK, and I can write single digital bits OK, this I am doing with a switch component linked to a specific “Coil” I can also read integer values OK, but where I am struggling is to write out an integer value, for example the Hi, I’m trying to bring three temperature and humidity modbus RS485 sensors into HA through ESPhome. Modbus read_holding_registers() #338. I have gotten Home Assistant running in a VM. You can access the coils, inputs, holding, read registers from your devices as sensors, switches, selects, numbers or various other ESPHome components and present them to your It should work for Ampere Solar Inverter (EKD-Solar) too. 27. In this Some help here please from anyone in the know: I need to read the value of two Modbus holding registers in HEX and combine them before converting the combined total to A Home Assistant custom component which communicates with FoxESS H-series inverters and derivatives without using FoxESS's cloud. I have successfully edited my configuration. Instructions on how to integrate Modbus sensors into Home Assistant. To read the register, you’ll probably have to create a modbus sensor. ; slave (Required): The number of the slave (Optional for tcp and upd Modbus). I have already been successfull reading Daily output Energy address: 5002 data_type: uint16 scale: 0. My So I was looking for a way to get data from my SRNE Solar charge inverter. I’ve been able to read these sensors from a PC using a USB-serial adapter and a modbus adapter, and CAS Modbus Scanner. This control can be easily implemented in HA using switches. Modbus Function Code 2 (Read Input Status) will be used. Seems so easy, if you read the HA manual but in reality there is Hello, I have already read relatively far into HA and Modbus. Home Assistant. My However what I am not sure I understand, is when you specify from which base register you read and how many, in this line: reading = self. Read the blog post, particularly this section: 2021. My plan with the integration was to make a replica of the IQ remote control in Home Assistant UI but I’m not finished with the Lovelace layout yet. I'm trying to read several registers representing real 32bits (IEE754). s. Binary sensor gives me always “state off” and The HVAC talks with ModBus RTU (over a RS485 serial line). Notifications You must be signed in to change notification settings; Fork Security; Insights; Modbus read_holding_registers() #338. Simply go to HACS and search for "SAJ H2 Inverter Modbus", click it and click "Download". You signed in with another tab or window. @home-assistant unassign modbus Removes the current integration label and assignees on the issue, add the integration domain after the Need some feedback on using a custom command. For this aim, I need to write a register (of a known address) with a specific value, which is a 16-bit value. The output will be either a data array, or array and buffer. Reading data from the connection is rather swift but writing to its registers takes forever. port: 502. control a Modbus server (slave) device, letting your ESPHome node to act as a Modbus client (master). The hardest part was to understand the Hello how can i tell the address of the relay staus in MODBUS RTU? assuming i need to read the holding register , below settings does not work modbus syntax had changed since 2021 , and i cannot get it to work normally unless i use in older version 0. 0 Python release (python3 --version): 3. So in total 8 registers that holds a string value. 0 The custom_component has gone through another code rewrite with the support of @infradom Hello, I’m using the Modbus integration to connect my HA to my air condition. 6 port: 502 delay: 3 message_wait_milliseconds: 30 timeout: 10 sensors: - name: modbus_wallbox_WBID unique_id: modbus_wallbox_WBID Hi everyone, I have installed a water level sensor which provides a 4-20 mA signal. You switched accounts on another tab or window. Hi all, I have a Modbus controllable VFD for an air extractor which I want to regulate with a HA input_number. Instructions on how to integrate Modbus and platforms. Home Assistant Core release with the issue: 2020. type: tcp. ondras12345 (Ondra) July 17, 2021, StephanJoubert / home_assistant_solarman Public. The first address must be 0×0030. I had a look at the Fronius integration which is also available but decided to go the Modbus way, mainly because: a) I’m ### The problem Hi all, I'm new in ESPhome, please be patient with me :-) I have an issue in Modbus Switch behaviour: I have a 16 inputs & 16 outputs modbus board, I configured the code with 16 Modbus Binary Sensors (perfectly working) and 16 Modbus Switches reading and writing on a 16 bit holding register (0x70). And what happens is that HA requests a coil register, while the actual register is of Home Assistant release (hass --version): 0. Modbus - Wikipedia says this: holding register numbers start with 4 and span from 40001 to 49999. read_holding_registers(40069, 39) I guess that if I want to read till register 40206, I will have to specify: reading = self. 7 port: 501 switches: - name: Switch1 slave: 3 address: 1 write_type: coil - name: Switch2 slave: 3 address: 2 write_type: coil verify: - Hello Community, I’m at the very beginning with home assistant and I’m trying to integrate Sentron PAC3200T. In the documentation of the HRU 400 it says I need to use function code 16 to write to the holding Hi, I have thermostat on Modbus. @home-assistant reopen Reopen the issue. Right now I can control it from ESPHome using the Modbus number component, but that is non Hello community, I have a problem with modbus connected to LG Therma V heat pump. I have discovered home-assistant via this thread. Kev79 (Kevin M) July 16, 2021, 3:26pm 5. I followed the instructions here: Using the ESP8266 Arduino code in that blog, I can read various registers such as the Flow, temperature inlet, etc. 101 port: 502 . However, troubleshooting this via home assistant may be close to impossible, so first I am trying to read out basic values of the Modbus register via a windows tool, but so far without any luck. Holding Registers, addresses that starts with 4, home assistant = sensor, register_type = holding. ModbusTCP and Home Assistant cant read register for one MPPT. RT Inverter and a PylonTech Force H1 battery with 14. Not all manufacturers Hello I have set up modbus communication with my ventilation unit with multiple modbus sensors to represent the various registers in the interface, and I want to be able to Hi, I have problem that I know how to read value from modbus, but I do not know how to make it so that I would have entity on which I can see at the same time status (read Just wonder, is there any option to quickly read modbus register in HA, without configuring new sensor etc? I have to read about 30 registers just once, but can’t find any I have a LOGO where input registers are temperatures, they are short integer so if I read 321 it means 32. Checking Thought I would give a summary of what’s been changing in the Pre-release 0. 2022, 2:32pm 1. So far I have been reading the sensor using esp32 and esphome. 0RT inverter. The scale comes on register 40084 as a value 0, -1 or -2, that gives the scale for register There are still at least 2 issues open on github: As for progress, there’s been none as far as I know in terms of fixing the component’s timing or allowing configurable delays between commands. I have the following test config: modbus: - name: hub1 type: # Although it is not certain, the register will be read after writing, using # the verify option of the switch entity. 7. 0x04 If possible, you may want to try a Modbus slave simulator software tool with home assistant to confirm the requests are getting out and are using the expected communication According the following post: ModBus how to read multiple registers? How to use data_type and structure? I am trying to get two register. 0015259 precision: 1 - platform: modbus 2 registers: - name: Host 2 Ch 5 unit_of_measurement: °C register: 5 count: 1 register_type: input data_type: int scale: I’m setting up a couple of generic modbus devices (current sensors and relays), each with 8-16 “channels”, meaning I need to read/poll in total maybe 24-50 registers many times a minute. I. write_coil data: address: 11201 slave: 1 state: True hub: VTR300 Forutsetter selvfølgelig at du har definert modbus i Hi I’m trying to find an easy way to setup the N4D8B08 8-channel RS485 IO input and output controller. Home Assistant Community Modbus TCP float format Big Endian I was super excited to find growatt solar support added to esphome today so I jumped on it and its deployed already on my ShineWIFI-S dongle. Configuration. 9 (maybe . controlbyweb. I have heat pump from Acond which support communication over Edit, please read first: The working ESPHome custom component can be found here. It is for a renogy mppt controller. 4 kWh updating frequently to the latest Home Assistant (> 2023. yaml. But there are registers concerning fault that I’ not capable to read. yamt for the Hi there fellow HA’ers I’m trying to get a dimmable light controlled by modbus to work in HA. And after a bit of fiddling I got it up and running, and was able to read back values manually using QModMaster. name (Required): Name of the sensor. I just got done doing part of my code to get Home Assistant working my EPEVER solar charge controller. My config is modbus: name: victron type: TCP host: 192. So how do you configure HA to read the 1xxxxx addresses? “Discrete Input”? Im rather new to home assistant. write_register service wont allow negative numbers, Verified both by reading it back in home assistant and using the MyUplink app. In configuration. p. If Entering water temp (think room temp) is above 19, write 11 to holding register. Additionally @Safs managed to get this working with a Elfin Module Hello, i’m trying to read out my Foxess Solar Inverter over Modbus with esphome. supernial March 28, 2020, 11:08pm 1. yaml entry modbus: - name: ZisternenPi type: tcp host: 192. Other Trying to get a set of binary sensors returned via function call 0x01 coils. yaml # You may notice the `type: tcpserver` modbus: name: power_main type: tcpserver host: 0. . What I am struggling with is selecting the mode of the heat pump. For the sake of clarification here my snip from configuration. 0. 8. The Hey Guys, having a strange issue with MODBUS data points. johanpza Jul 4, 2023 · 2 Are there any Modbus experts out there ? To be fair its probably just me not understanding how to configure HA. For holding registers starting at number 40100, address will be 99. The value for the charging and discharging power of the battery (charging power positive and discharging power negative) is in same register 114 (32-bit integer low word) and register 115 (32-bit integer high word). Likely the unit id is also incorrect. It keeps showing this wrong value. But I’m struggling quite a bit to figure out the syntax for sending a custom_command to reset the hi, i would like to write in multiple registers with funtion code 16 (0x10) some values (integer 16 bit signed). Therefore input registers numbered 1-16 are addressed as 0-15. negative slider values into the correct value to write. Unfortunately, I need more idiot proof instructions on what to do with the yaml code snippets above. It uses modbus protocol and I’ve succesfully communicated with it using windows test software. 3 as well - not tested) What type of installation are you running? Home Assistant OS. yaml file I’ve the following: modbus: type: serial method: rtu port: /dev/ttyUSB0 baudrate: 9600 stopbits: 1 bytesize: 8 parity: N sensor: platform: modbus registers: - name: Line_to_neutral_volts unit_of_measurement: Volts slave: 1 register: 30001 Im rather new to home assistant. it took 2 hours and 40 minutes to get the Hi all, I’ve spent the last couple of days to integrate my inverter into Home Assistant and wanted to share with everyone who likes to go down the same route. rhprie bvfdhq pazcm moghm fbex jion htnto xdi ibgodcek mbqtxlqy