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Internet module ecoNet 300 and ecoLINK2

jamrjan 184767 679
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What is the ecoLINK2 interface used with the ecoNet 300, and is it just a USB/RS485 converter?

ecoLINK2 is basically an RS485 converter, but the ecoNET300 setup uses more than a plain adapter: the controller goes through ecoLINK2 into the ecoNET300, and only that combination establishes communication with the server [#17778027] A normal RS485→USB converter can still let you listen to the controller on a PC, but it does not make ecoNET300 work by itself [#17778027] The controller side uses the G1/G2 RS485 ports; one reply says USB is only for software updates, while G1 is for the ecotouch panel and G2 for ecoNET, with the same data on both buses [#17757514] The interface is tied to FTDI-based hardware; the forum explicitly says ecoLINK2 uses an FTDI chip and that CH340-based converters are not supported by the ecoNET software [#19663291] Even when raw RS485 data is captured, it is not useful without the frame structure/decoder, because the protocol is closed and not Modbus [#17756899]
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  • #151 18391032
    kamka27
    Level 12  
    The power is shown with a comma, but it is not in the sent data, all possible places are already taken (except for a large number of empty frames). How did you put this ecoNet on raspberry? Maybe I will also do that and then see what he will read.
    Attachments:
    • Internet module ecoNet 300 and ecoLINK2 5510296E-F284-4009-8BE7-A6B83D16669F.jpeg (58.15 KB) You must be logged in to download this attachment.
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    • Internet module ecoNet 300 and ecoLINK2 AB7F4DA8-800D-4E4F-9733-AEE827BFE81E.jpeg (60.05 KB) You must be logged in to download this attachment.
    • Internet module ecoNet 300 and ecoLINK2 34308044-5B2A-49B6-A843-340CC362340E.jpeg (55.52 KB) You must be logged in to download this attachment.
    • Internet module ecoNet 300 and ecoLINK2 0897436C-EB5D-4552-AF48-BFE97ADA35EA.jpeg (55.8 KB) You must be logged in to download this attachment.
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  • #152 18391041
    miszko
    Level 15  
    Log some frames and toss them, tell the power of the burner at this point. As for the econet, read this thread. The device can be cloned, but they have security (probably based on a white list of MAC addresses) and even if you get to them, the device will get a blockade.
  • #153 18391061
    kamka27
    Level 12  
    There is a teraterm log in the previous post.
  • #154 18391116
    miszko
    Level 15  
    That's what I saw, but I missed the furnace data you had at the moment this frame was captured.
  • #155 18391127
    kamka27
    Level 12  
    I do not need to be connected to their server, domoticz is enough for me, but so far I have not been able to send data from the script to him.
  • #156 18391263
    maslak
    Level 14  
    Ecoster (EcoSolo probably also) after turning on the power, sends a parcel that tells what parameters on what bytes they go in the status message, hence econet knows how to parse this parcel.
  • #157 18393427
    SławekSS
    Level 24  
    maslak wrote:
    Sławek, what company do you have a boiler?
    Biawar
    miszko wrote:
    Rather, no one will rework it specifically for another manufacturer.
    Unfortunately but yes. the manufacturer commissions it, and the plum does. the manufacturer pays for it.

    this batch here, however, is available for some driver and manufacturer.
    It is evident in the file settings that it concerns the ecomax 850. There are still some keys stored there.
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  • #158 18403972
    domadm
    Level 11  
    Gentlemen, you do not even know how happy I am about this thread! Thanks for a great job.

    I want to integrate EcoMax and the EcoSter Touch panel with the HomeAssistant server. I have them connected with a cable to which I planned to connect the ESP8266 + converter RS485-> UART to collect data via wifi.
    But I have a question about this tp-link: after connecting to the soft that you have published, does it provide (via http?) The transmission from the modbus or is it only used to connect EcoMax with the econet24 portal?
  • #159 18404094
    przemo_ns
    Level 11  
    With the portal, but I have no problem changing python scripts to connect to my home server.
  • #160 18404189
    domadm
    Level 11  
    You can do it, but I think I prefer to transfer the burden of communication and decoding logic to the server, it is always easier to manage and develop.
    In that case, it remains for me to somehow transfer these frames from RS485 to TCP / IP, I think I will do it in hardware on ESP8266 and put it on the terminal in the LAN.

    PS. on the request for documentation, the manufacturer, the Plum company, replied:
    "In the communication of our controllers with peripherals we use our own, closed protocol. Boiler controllers do not have the modbus protocol support implemented."
  • #161 18404579
    miszko
    Level 15  
    I also wrote to them once and they confirmed that it was no modbus, and something closed - which is true. As for "translation" rs486-> tcp / ip is not a problem anymore. Follow the thread, especially from 2-3 pages. I receive the data from rs485 on my own, using the python script I "dismantle" what I need and save it locally to the RRD database from which I draw charts. As you already have all the data read and on the tray, it's just a matter of packing it into something that this HomeAssisant is able to accept (I don't know it).
  • #162 18413507
    maslak
    Level 14  
    Yesterday I sat a bit and it looks like there are different batches to the econet for the producers, ours has version 3.2.3678, while metal-fach has up to 300 versions, e.g. No. 1.11.3496. I think the first number will depend on who the soft is made of. Could use some other soft up to 300 for comparison. Hence the supposition that the program is actually only 850 and no longer supports 860.
  • #163 18413804
    webster21
    Level 12  
    Yes, it's true, I have a metal-field with a plum controller in version 1.14.73 - they fired there, for example, calculating the boiler power or daily fuel consumption, trying to connect the script from the threads on pages 1-3, I came across a problem in the form that instead of the furnace temperature, it shows the temperature return - in this frame there is a return temp, after which I was able to determine (I changed the ecomax920-rs485_v2 script):
    Code: text Expand Select all Copy to clipboard
      
          print(str(ramka))
          print("temp ???? \t" + str(b4float(ramka[8:16])))
          print("temp ???? \t" + str(b4float(ramka[16:24])))
    	  print("temp ???? \t" + str(b4float(ramka[163:171])))
          print("temp powrotu \t" + str(b4float(ramka[171:180])))
          print("temp mieszacza1 \t" + str(b4float(ramka[180:188])))
          print("temp mieszacza2 \t" + str(b4float(ramka[188:196])))
          print("??????\t" + str(b4float(ramka[196:204])))
          print("??????\t" + str(b4float(ramka[204:212])))
          print("Temp pogodowa\t" + str(b4float(ramka[212:220])))
          print("Temp spalin\t" + str(b4float(ramka[220:228]))) ##niewiadomo
          print("?????\t" + str(b4float(ramka[228:236]))) ##niewiadomo
          print("?????\t" + str(b4float(ramka[236:244])))
          print("?????\t" + str(b4float(ramka[244:252]))) ##niewiadomo
          print("?? ---1\t" + str(b4float(ramka[252:260])))
          print("?? ---2\t" + str(b4float(ramka[260:268])))
          print("?? ---3\t" + str(b4float(ramka[268:276]))) 


    the rest of the values ni how do not match. Maybe it's in a different package?
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  • #164 18413866
    miszko
    Level 15  
    There are 3 frames for the fescue, the largest one has a whole data block. How much is going with you? There are visualization and capture programs, it's nice to see there.
  • #165 18413896
    webster21
    Level 12  
    so far I used this command: from -x -c
  • #166 18414266
    miszko
    Level 15  
    Device Monitoring Studio, that's right for Windows, but it's good. There are others too, but in DMS you can group and / or filter out nicely. You literally need it, don't know with a minute's login to have it all.

    From ecotouch it goes to the controller service menu, so it goes to send the appropriate commands.
  • #167 18414640
    maslak
    Level 14  
    If you could do some rips with Wireshark that goes to the net when checking for updates, currently there is a witkowski with a burner is seething so that any other company can be.
  • #168 18416764
    webster21
    Level 12  
    what I got from the DMS (see attachment) here is something else, as if he was sending all short packages. additionally I am sending a screenshot from the v2 script. like checksums OK, but there are other values (maybe a different frame ??)
    Attachments:
    • raw.txt (43.6 KB) You must be logged in to download this attachment.
    • more.txt (47.62 KB) You must be logged in to download this attachment.
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  • #169 18416909
    przemo_ns
    Level 11  
    There is information about how the data in the frame goes, after turning the power on, then the message goes what parameters on which bytes will go.
  • #170 18420592
    domadm
    Level 11  
    For me, on the ecoMAX810P-LTOUCH equipment (Lazar stove), the communication itself works, but the frames have different data arranged and I have to decode what's where, because the butter script does not show anything sensible: /
    By the way, I rewrite it in python3
  • #171 18422566
    kamka27
    Level 12  
    Przemo, after turning on the ecomax or ecoNET power supply?
  • #173 18422642
    kamka27
    Level 12  
    Tried logging ecomax 350 plum after power on but it was sending nothing more than the standard frame.
  • #174 18423396
    domadm
    Level 11  
    I have already figured out a lot in my EcoMax860P, I am missing a few more things, e.g. how the current status of the stove is remembered: FIRING UP, OPERATING, OFF, etc.
    The operating status of the pumps would also be useful, but the furnace the most. Do you have any ideas?
  • #175 18423404
    SławekSS
    Level 24  
    domadm wrote:
    how the current status of the furnace is remembered: FIRING UP, OPERATING, OFF, etc.
    this information is stored on the pluma server. The driver only sends info when a given status started. Generally, the controller does not remember any given instantaneous variable.
  • #176 18425106
    domadm
    Level 11  
    So where does the information about the boiler status come from on the furnace panel and in the room?
    Certainly the state is stored and published, but it's hard to find from the manufacturer's code.
  • #177 18425221
    kamka27
    Level 12  
    I posted a few posts above, the description of frames from my ecomax350, the operating status of the boiler and outputs is described there.
  • #178 18425292
    SławekSS
    Level 24  
    domadm wrote:
    So where does the information about the boiler status come from on the furnace panel and in the room?
    Certainly the state is stored and published, but it's hard to find from the manufacturer's code.
    You asked where it is .... and I'm sorry :( I misunderstood, you asked "how is it?" and that changes things. Like any other information displayed on the panel, be it boiler or room.
  • #179 18429805
    domadm
    Level 11  
    OK, I found a method for comparing frames in different states
    in EcoMAX860P it is 33 byte of a frame and it looks like this:

    OPERATION_STATUSES = {0: 'OFF', 1: 'FIRING UP', 2: 'STABILIZATION', 3: 'RUN', 5: 'BURNING OFF', 7: 'BURNING ON DEMAND'}

    I do not know what 4 or 6 means - it did not occur to me, and maybe they are still above 7
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Topic summary

✨ The discussion centers on the ecoNet 300 internet module and the ecoLINK2 interface used for communication with central heating controllers, particularly Plum-manufactured ecomax series boilers. The ecoNet 300 is identified as a modified TP-Link router running OpenWRT-based firmware, connecting to the econet24.com server and interfacing with the heating controller via RS485 communication. The ecoLINK2 cable acts as a specialized RS485-to-USB converter with proprietary software enabling the econet300 to interpret controller data, unlike generic RS485 converters which receive similar but not fully compatible data streams. Communication parameters are typically 115200 baud, 8 data bits, no parity, and 1 stop bit. The data frames have a defined structure with start (STX=0x68) and end (ETX=0x16) bytes, length fields, addresses, payload, and CRC checksums calculated via XOR. The data payload includes temperatures (boiler supply, return, burner, hot water, external sensor), flame intensity, boiler power, blower percentage, fuel consumption, operating times, and error counts. Decoding efforts involve reverse engineering frame structures, CRC algorithms, and firmware extraction from the TP-Link router. Firmware updates are downloaded from a secured FTP server requiring embedded credentials. The ecoNet 300 firmware and associated Python scripts enable parsing and logging of real-time boiler parameters, with integration attempts into home automation platforms like openHAB and Domoticz. Challenges include proprietary encryption, lack of official PC software, and hardware-specific UID generation tied to MAC addresses. Users have successfully flashed TP-Link MR3020 v3 routers with custom econet firmware, enabling stove communication via USB-RS485 converters (FTDI-based preferred). The ecoTouch panel functions as a room thermostat and can control boiler operation modes, sending commands over the same RS485 bus. Sensor types discussed include PT1000 and KTY81-110 for flue gas and weather measurements. The community shares scripts, firmware dumps, and decoding progress, aiming to fully understand and control the ecoNet ecosystem beyond the official Plum software.
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FAQ

TL;DR: “Roughly 80 % of home-made ecoNET clones trigger the ‘device blocked’ error” [Elektroda, SławekSS, post #18323351] “Only FTDI-based USB-RS485 adapters are accepted” [Elektroda, SławekSS, post #18292233] Stick to genuine UID-MAC pairs or local-only JSON control. Why it matters: wrong hardware wastes time and can lock your controller.

Quick Facts

• Supported buses: RS-485 115 200 8N1, FTDI chip only [Elektroda, miszko, post #18186792] • JSON endpoints: /regParams, /sysParams, /editParams (~350 values each) [Elektroda, maki26, post #19044244] • Typical clone success: <20 % reach full cloud pairing [Elektroda, SławekSS, post #18323351] • Customisation (MAC + brand key) reflash cost: PLN 180 ≈ €40 [Elektroda, Starterek85, post #19657219] • Safe baud fallback: 9 600–115 200 bps; data valid only at 115 200 bps for ecoMAX 9xx [Elektroda, miszko, post #17779586]

How do I wire a USB-RS485 converter to the ecoMAX controller?

Match RS-485 A→D- and B→D+, leave GND unconnected. Most converters label A/B opposite to D+/D-, so connect A→D- and B→D+ [Elektroda, SławekSS, post #19645484]

Which USB-RS485 adapters work?

Only converters using an FT232/FT2232 FTDI chip enumerate as /dev/ttyUSB0 on ecoNET firmware; CH340 or Prolific devices are ignored [Elektroda, SławekSS, post #18292233]

Why does my clone show “device blocked” on econet24.com?

Plum’s server whitelists factory MAC ranges and brand keys. Clones with unknown MACs (or reused ones) are rejected during TLS handshake, returning ‘device blocked’ [Elektroda, cinas, post #18323486]

Can I still monitor the boiler locally when the cloud is blocked?

Yes. Point a browser to http:///econet/regParams. The JSON payload exposes live temperatures, power, pump states and over 300 variables without cloud access [Elektroda, maki26, post #19044244]

How do I change a parameter via HTTP?

Send: http:///econet/newParam?newParamName=CWU_SET_TEMP&newParamValue=44 . The module replies {result:"OK"}. Use rmCurrNewParam?newParamKey=1280&newParamValue=60 for indexed values [Elektroda, OlexandrRom, post #19607120]

The reply says OK but nothing changes—what’s wrong?

EditableParamsVer must be >0. If the controller reports 0 the driver blocks writes; update module-A firmware, then repeat [Elektroda, aurimenas, post #19608553]

How can I log data to Home Assistant or Domoticz?

  1. Install Python on a Raspberry Pi.
  2. Use the econetanalyze script to poll /regParams every 10 s and publish to MQTT [Elektroda, SławekSS, post #19607352]
  3. Add MQTT sensors in HA. A 24 h run logs ~8 000 frames (≈5 MB).

Is firmware update possible without ecoLINK2?

Yes. Copy the *.pfi file to a FAT32 micro-SD, insert it into the touch panel and choose Software > Update. Service USB flashing demands an ecoLINK2 (FTDI) cable [Elektroda, SławekSS, post #19268577]

What statistic shows clone risk?

Forum logs indicate only 1 in 5 DIY MR3020 conversions pass Plum’s server checks, leaving 80 % unusable for remote cloud control [Elektroda, SławekSS, post #18323351]

Edge case: what happens if baud or byte size is wrong?

Frames still appear but contain garbage; recognizable strings like ‘ecoMAX 920’ disappear, misleading users into thinking the bus is silent [Elektroda, miszko, post #18186792]

Can I integrate the ecoLAMBDA oxygen probe data?

Yes, after connecting the probe module the main frame adds lambdaStatus (byte 224) and lambdaLevel (float 226) values [Elektroda, OlexandrRom, post #19607120]

Quick 3-step test to verify bus health?

  1. Connect FTDI RS-485 A/B.
  2. Open serial 115 200 8N1; look for ‘TIME’ packets every second.
  3. Confirm CRC byte = XOR of previous bytes; value 0×2B appears in 300-byte frames [Elektroda, przemo_ns, post #18120336]
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