CTS700 - what is needed?

[Chrunchy]

Ive currently added my Air 9 with CTS700 through modbus into HA with the network cable attached to the system. Currently i'm mapping each adress (Mine is a none geo version).

What is needed to add support for CTS700 too?

Mine is currently added to HA:

`modbus:
  - name: nilan
    type: tcp
    host: 192.168.2.217
    port: 502
    sensors:
      - name: nilan_humidity
    # Current humidity
        address: 21776
        unit_of_measurement: "%"
        slave: 1
      - name: nilan_t20_outdoor_temperature
    # Outdoor unit temperatur
        unit_of_measurement: "°C"
        slave: 4
        address: 20688
        count: 1
        scale: 0.1`

etc. etc.

Some data is placed at slave 1 (Indoor unit), and the outdoor unit data is placed on slave 4 for instance. Latest ModBus guide i could find is dated back in 2018, but seems to be working somewhat atleast. https://www.en.nilan.dk/Files/Files/Engelsk/Downloads/7.%20Modbus%20-%20BACnet/2018_04_Modbus_CTS700_Modbus_protokol.pdf

[veista]

Hi,

It's great that you are interested in this project! There are a lot of changes needed to the integration to accommodate cts700. If you are willing to help me with this endeavor I think we can succeed. I have never even seen a cts700 device so you will have to help me with testing, and give me detailed explinations with pictures etc. If needed. Remember that the integration should support all cts700 devices, not just your model/version.

I will start by writing up the registers. After that we will try to figure out how to saftely recognise your device through the integration.

When this is all done we can start adding functionality.

[veista]

Please respond if you are up for this? I can not do this by myself.

[Chrunchy]

I'm definitely up for helping with what i can, but i will have limited time from christmas and untill mid january. Currently i'm importing all registers from nilans documents for the CTS700. Of course i can't test everything as i don't have the geo model as mine is the Air9 with a air to water heatpump for centralheating. It's a limited amount of different registers for the GEO model.

[jakobmoll]

Hi

I'm currently using a manual modbus over tcp configuration for my Nilan Compact P (CTS700). The package I've setup for my integrations is listed here - perhaps this could help?

https://gist.github.com/jakobmoll/96d67a6e3c98b1742230057c5923da63

[veista]

Hi,

I'm at a bit of a loss here.

So I guess the older versions of Compact P use the manual found here https://symlink.dk/stuff/CTS700_MODBUS-rev%202.01.pdf

And the newer versions with Air and Geo support use the manual found in @Chrunchy link.

I'm not sure how to support both, I cannot seem to find a version register on the newer document.

Can you @Chrunchy test register 4632 if you can read the version number?

[mbobinac]

Hi,

i have Nilan CTS700 and looking for integration support. My version is 1.40.05.38 from 2015 and has not been updated since. I have a client app i can login as Installer (uses MODBUS to connect to CTS700) version 1.4.139 from 1.4.2018.

I can connect to CTS700 via the app from my server, but if i use MODBUS tools (Modbus pool) it says read error when connecting to CTS700. Not sure if permission or something else, i need password to login as Installer, but should not need anything to go as User. The Nilan App just does not allow anything else as Installer.

I've installed your HACS code, but when connecting to Nilan says "Invalid Response from Device" which is expected as you probably check some version data in one of the registers.

Cheers

[veista]

Hi. Unfortunately cts700 is not supported. I would like to add it, but it seems to be a mess to implement and I do not have access to one so debugging would be hard.

[convicte]

Hi @veista,

I've ended up purchasing an Elfin EW11A unit to integrate my Compact S pump, but struggle with finding both documentation (modbus registrars for compact S) as well as ready integrations.

If you could advise on what you'd need, I would be happy to at least try.

[veista]

Hi @veista,

I've ended up purchasing an Elfin EW11A unit to integrate my Compact S pump, but struggle with finding both documentation (modbus registrars for compact S) as well as ready integrations.

If you could advise on what you'd need, I would be happy to at least try.

I believe Compact S is a cts602 device so your question is in the wrong place. You can open a discussion, if you need generic help. I can not help with your setup: Read previous issues for hints, follow the instructions on the front page and then we can add Compact S to the supported devices.

[lauer]

Hi @veista I am also using @jakobmoll 's manuel modbud sensor config to interact with my Nilan Compact P Air 9 - CTS700.

Even though python is not my main language, I might be able to help testing and fixing stuff. Right now, the plugin gives the following error when trying to connect

  File "/config/custom_components/nilan/config_flow.py", line 108, in async_step_tcp
    await async_validate_device(
  File "/config/custom_components/nilan/config_flow.py", line 67, in async_validate_device
    result.registers[0].to_bytes(2, "little", signed=False),
    ~~~~~~~~~~~~~~~~^^^
IndexError: list index out of range

But it could be a UnitID problem, because I can't see why it should be 30 as default. If its the same as slave, it should have been '1', but that doesn't work either.

[veista]

Hi,

Cts700 works differently than cts602. I have some modifications to support cts700 in my code, but at the moment absolutely NO functionality has been implemented. I have slowly made it even theoretically possible to support cts700. Adding support will take time and I am a busy man.

Thanks for your understanding, I will report here once there is something to test.

[lauer]

okay, so its not just creating a registry mapping for cts700 like the one for 602? Could you create a branch with you work until now?

[veista]

There is no branch yet. There is no code yet. It is complicated to add since I have not originally thought about adding cts700.

Keep in mind that there is also two types of cts700 as I mentioned before in this issue. Both are completely different.

[maisun]

Hi, I have tried to setup CTS700 myself with OH Modbus integration, I’d like to ask if anybody knows which register to read containing the below info: 1) Compressor state: can be off, defrosting, hot water production, heating, cooling 2) Flag indicate if the supplementary eletrical heater for the water tank is running or not (the red dot on the display) Many thanks!

[lauer]

I know you havn't written that it was ready.

However, I would like to give the new 1.12.13b on my Nilan CompactP Air a try, but I just get "invalid response" with no further log in console, when I try to add the integration.

I fetch data using modbus plugin in HA using the same IP, port and device (1), so I know it answers, but could it give problems, what some processes are already communicating with it?

Please tell me, how I can help testing it?

[veista]

Thanks for your enthusiasm. I will let you know when I need your help. It will take some time to get to that point.

Do you have the old or new cts700?

[leonkdk]

I have a CTS700 Touch. Display Software Version: 09.06.45 (2017-07-08) Print Software Version: 2.02.13.93 (2017-07-08) I am very interested in a working connection to my Home Assistant and as such would like to offer my help as well!

[veista]

I have finally started to create development tools for implementing cts700 devices.

It would be great help if owners of cts700 devices would dump all registers to a file with qmodmaster or equivalent accompanied with device information and a picture of the type plate.

[Johannes-288]

Hello everyone, here is the yaml in a package of my Nilan Compct P Geo 6, which has already been working for a few weeks! Unfortunately, a few little things are still missing (for example: manual control of fan speed 1-4) A small note: I have translated my yaml from German into English. There might have been mistakes

modbus:

• name: nilan type: tcp host: >xx.xx.xx.xx< port: 502

  delay: 0 message_wait_milliseconds: 30 retries: 3 timeout: 5

  sensors:

  • name: nilan_t0_Actual_air_humidity unique_id: nilan_t0_actual_air_humidity address: 21776 unit_of_measurement: "%" slave: 1
  • name: nilan_t1_outdoor_air_temperature unique_id: nilan_t1_outdoor_air_temperature device_class: temperature unit_of_measurement: "°C" slave: 1 address: 20282 scale: 0.1 precision: 1
  • name: nilan_t2_supply_air_temperature unique_id: nilan_t2_supply_air_temperature device_class: temperature unit_of_measurement: "°C" slave: 1 address: 20284 scale: 0.1 precision: 1
  • name: nilan_t3_extract_air,_room_temperature unique_id: nilan_t3_extract_air,_room_temperature device_class: temperature unit_of_measurement: "°C" slave: 1 address: 20286 scale: 0.1 precision: 1
  • name: nilan_t4_discharge_air,_after_heat-discharge_exchanger unique_id: nilan_t4_discharge_air,_after_heat-discharge_exchanger unit_of_measurement: "°C" slave: 1 address: 20288 scale: 0.1 precision: 1
  • name: nilan_t5_discharge_air,_after_heat_pump unique_id: nilan_t5_discharge_air,_after_heat_pump device_class: temperature unit_of_measurement: "°C" slave: 1 address: 20290 scale: 0.1 precision: 1
  • name: nilan_t6_evaporator_temperature unique_id: nilan_t6_evaporator_temperature device_class: temperature unit_of_measurement: "°C" slave: 1 address: 20292 scale: 0.1 precision: 1
  • name: nilan_t7_supply_air_temperature_afterheater unique_id: nilan_t7_supply_air_temperature_afterheater device_class: temperature unit_of_measurement: "°C" slave: 1 address: 20294 scale: 0.1 precision: 1
  • name: nilan_t8_outdoor_air_before_pre-heater unique_id: nilan_t8_outdoor_air_before_pre-heater device_class: temperature unit_of_measurement: "°C" slave: 1 address: 20296 scale: 0.1 precision: 1
  • name: nilan_t9_wassertemperatur_nach_heizung unique_id: nilan_t9_wassertemperatur_nach_heizung device_class: temperature unit_of_measurement: "°C" slave: 1 address: 20298 scale: 0.1 precision: 1
  • name: nilan_t11_top_temperature_in_DHW_watertank unique_id: nilan_t11_top_temperature_in_DHW_watertank device_class: temperature unit_of_measurement: "°C" slave: 1 address: 20520 scale: 0.1 precision: 1
  • name: nilan_t12_bottom_temperature_in_DHW_watertank unique_id: nilan_t12_bottom_temperature_in_DHW_watertank device_class: temperature unit_of_measurement: "°C" slave: 1 address: 20522 scale: 0.1 precision: 1

    count: 1

    ##########################################################################

  • name: nilan_outdoor_air_filter_Days_to_next_filter_change unique_id: nilan_outdoor_air_filter_Days_to_next_filter_change unit_of_measurement: "days" slave: 1 address: 20103 scan_interval: 43200
  • name: nilan_nilan_supply_fan_speed unique_id: nilan_supply_fan_speed unit_of_measurement: "%" slave: 1 address: 21771 scan_interval: 900
  • name: nilan_extract_fan_speed unique_id: nilan_extract_fan_speed unit_of_measurement: "%" slave: 1 address: 21772 scan_interval: 900
  • name: nilan_fan_speed_level-1-supply_air unique_id: nilan_fan_speed_level-1-supply_air slave: 1 address: 20140 scan_interval: 43200
  • name: nilan_fan_speed_level-1-extract_air unique_id: nilan_fan_speed_level-1-extract_air slave: 1 address: 20141 scan_interval: 43200
  • name: nilan_fan_speed_level-2-supply_air unique_id: nilan_fan_speed_level-2-supply_air address: 20142 scan_interval: 43200
  • name: nilan_fan_speed_level-2-extract_air unique_id: nilan_fan_speed_level-2-extract_air slave: 1 address: 20143 scan_interval: 43200
  • name: nilan_fan_speed_level-3-supply_air unique_id: nilan_fan_speed_level-3-supply_air slave: 1 address: 20144 scan_interval: 43200
  • name: nilan_fan_speed_level-3-extract_air unique_id: nilan_fan_speed_level-3-extract_air slave: 1 address: 20145 scan_interval: 43200
  • name: nilan_fan_speed_level-4-supply_air unique_id: nilan_fan_speed_level-4-supply_air slave: 1 address: 20146 scan_interval: 43200
  • name: nilan_fan_speed_level-4-extract_air unique_id: nilan_fan_speed_level-4-extract_air slave: 1 address: 20147 scan_interval: 43200
  • name: nilan_fan_speed_level unique_id: nilan_fan_speed_level slave: 1 address: 20148 ##########################################################################
  • name: nilan_compact_p_systemstate unique_id: nilan_compact_p_systemstate slave: 1 address: 21770
  • name: nilan_compact_p_bypass_damper unique_id: nilan_compact_p_bypass_damper slave: 1 address: 21773 data_type: uint16
  • name: nilan_compact_p_aircompressor_state unique_id: nilan_compact_p_aircompressor_state slave: 1 address: 21775 data_type: uint16
  • name: nilan_compact_p_four-way-valve unique_id: nilan_compact_p_four-way-valve slave: 1 address: 21791
  • name: nilan_compact_p_alarm unique_id: nilan_compact_p_alarm slave: 1 address: 21792 ##########################################################################
  • name: nilan_t13_brine_before_evaporator unique_id: nilan_t13_brine_before_evaporator device_class: temperature unit_of_measurement: "°C" slave: 4 address: 20645 scale: 0.1 precision: 1
  • name: nilan_t14_brine_after_evaporator unique_id: nilan_t14_brine_after_evaporator device_class: temperature unit_of_measurement: "°C" slave: 4 address: 20647 scale: 0.1 precision: 1
  • name: nilan_t16_before_condenser unique_id: nilan_t16_before_condenser device_class: temperature unit_of_measurement: "°C" slave: 4 address: 20649 scale: 0.1 precision: 1
  • name: nilan_t17_after_condenser unique_id: nilan_t17_after_condenser unit_of_measurement: "°C" slave: 4 address: 20651 scale: 0.1 precision: 1
  • name: nilan_t18_supply_flow_geo unique_id: nilan_t18_supply_flow_geo device_class: temperature unit_of_measurement: "°C" slave: 4 address: 20653 scale: 0.1 precision: 1
  • name: nilan_t20_outdoor_temperature_geo unique_id: nilan_t20_outdoor_temperature_geo device_class: temperature unit_of_measurement: "°C" slave: 4 address: 20655 scale: 0.1 precision: 1 ##########################################################################
  • name: nilan_geo_systemstate unique_id: nilan_geo_systemstate slave: 4 address: 21840
  • name: nilan_geo_compressor_level unique_id: nilan_geo_compressor_level unit_of_measurement: "%" slave: 4 address: 21841

    scale: 1

  • name: nilan_geo_brine_circulation_pump_level unique_id: nilan_geo_brine_circulation_pump_level unit_of_measurement: "%" slave: 4 address: 21842 scale: 1
  • name: nilan_geo_central_heat_pump_level unique_id: nilan_geo_central_heat_pump_level unit_of_measurement: "%" slave: 4 address: 21843 scale: 1
  • name: nilan_geo_three-way_valve unique_id: nilan_geo_three-way_valve slave: 4 address: 21844
  • name: nilan_geo_supplement_heater unique_id: nilan_geo_supplement_heater slave: 4 address: 21851
  • name: nilan_geo_high_pressure_alarm unique_id: nilan_high_pressure_alarm slave: 4 address: 21854
  • name: nilan_geo_low_pressure_alarm unique_id: nilan_geo_low_pressure_alarm slave: 4 address: 21855
  • name: nilan_geo_brine_pressure unique_id: nilan_geo_brine_pressure slave: 4 address: 21856
  • name: nilan_geo_alarm unique_id: nilan_geo_alarm slave: 1 address: 22490 ##########################################################################

  switches:

  • name: nilan_compact_p_set_ventilation_on_pause unique_id: nilan_compact_p_set_ventilation_on_pause slave: 1 address: 20100 command_on: 1 command_off: 0
  • name: nilan_compact_p_allow_active_cooling unique_id: nilan_compact_p_allow_active_cooling slave: 1 address: 20180 command_on: 1 command_off: 0
  • name: nilan_compact_p_high_fan_speed_when_cooling unique_id: nilan_compact_p_high_fan_speed_when_cooling slave: 1 address: 20181 command_on: 1 command_off: 0
  • name: nilan_compact_p_cooling_priority_to_hot_water unique_id: nilan_compact_p_cooling_priority_to_hot_water slave: 1 address: 20184 command_on: 1 command_off: 0
  • name: nilan_compact_p_electrical_supplement_heater unique_id: nilan_compact_p_electrical_supplement_heater slave: 1 address: 20464 command_on: 1 command_off: 0
  • name: nilan_compact_p_start_anti_legionella_manuel unique_id: nilan_compact_p_start_anti_legionella_manuel slave: 1 address: 20480 command_on: 1 command_off: 0
  • name: nilan_compact_p_pause_central_heating unique_id: nilan_compact_p_pause_central_heating slave: 1 address: 20600 command_on: 1 command_off: 0
  • name: nilan_geo_power_central_heating unique_id: nilan_geo_power_central_heating slave: 1 address: 20602 command_on: 1 command_off: 0

template:

• sensor:

  • unique_id: Nilan GEO Systemstate name: Nilan GEO Systemstate state: >- {% if states('sensor.nilan_geo_systemstate') | float(0) == 0 %} auto {% elif states('sensor.nilan_geo_systemstate') | float(0) == 1 %} cooling {% elif states('sensor.nilan_geo_systemstate') | float(0) == 2 %} heat {% endif %}
  • unique_id: Nilan Compact P Systemstate name: Nilan Compact P Systemstate state: >- {% if states('sensor.nilan_compact_p_systemstate') | float(0) == 0 %} auto {% elif states('sensor.nilan_compact_p_systemstate') | float(0) == 1 %} cooling {% elif states('sensor.nilan_compact_p_systemstate') | float(0) == 2 %} heat {% endif %}
  • unique_id: Nilan GEO Three-way valve name: Nilan GEO Three-way valve state: >- {% if states('sensor.nilan_geo_three-way_valve') |float(0) == 1 %} water {% else %} heat {% endif %}
  • unique_id: Nilan Compact P Four-way valve name: Nilan Compact P 4Four-way valve state: >- {% if states('sensor.nilan_compact_p_four-way-valve') |float(0) == 1 %} open {% else %} close {% endif %}
  • unique_id: Nilan Compact P Bypass-Damper name: Nilan Compact P Bypass-Damper state: >- {% if states('sensor.nilan_compact_p_bypass_damper') |float(0) == 1 %} open {% else %} close {% endif %}
  • unique_id: Nilan Compact P Air-Compressor name: Nilan Compact P Air-Compressor state: >- {% if states('sensor.nilan_compact_p_aircompressor_state') |float(0) == 0 %} stop {% else %} run {% endif %}

• binary_sensor:

  • unique_id: Nilan Low pressure alarm name: Nilan Low pressure alarm device_class: problem state: >- {% if states('sensor.nilan_geo_low_pressure_alarm') |float(0) == 1 %} Ok {% else %} Error {% endif %}
  • unique_id: Nilan High pressure alarm name: Nilan High pressure alarm device_class: problem state: >- {% if states('sensor.nilan_high_pressure_alarm') |float(0) == 1 %} Ok {% else %} Error {% endif %}
  • unique_id: Nilan Brine pressure name: Nilan Brine pressure device_class: problem state: >- {% if states('sensor.nilan_geo_brine_pressure') |float(0) == 1 %} Ok {% else %} Error {% endif %}
  • unique_id: Nilan Geo Alarm name: Nilan Geo Alarm device_class: problem state: >- {% if states('sensor.nilan_geo_alarm') |float(0) == 1 %} Ok {% else %} Error {% endif %}
  • unique_id: Nilan Compact P Alarm name: Nilan Compact P Alarm device_class: problem state: >- {% if states('sensor.nilan_compact_p_alarm') |float(0) == 1 %} Ok {% else %} Error {% endif %}

[terkilddk]

I have a CTS700 and a Nilan compact P Air9 and would like to help, i use this config for my modbus connection today. https://pastebin.com/PZNHBRXM

Software is updated to latest version by Nilan last week

I will be happy to help with qmodmaster if someone can guide me.

[lauer]

Same here, however, I only have macs and linux servers, and most of the tools seems to require windows :/

[maisun]

I have a CTS700 and a Nilan compact P Air9 and would like to help, i use this config for my modbus connection today. https://pastebin.com/PZNHBRXM

Software is updated to latest version by Nilan last week

I will be happy to help with qmodmaster if someone can guide me.

Thanks for sharing your config! Have you figured out how to control active cooling? Neither 3284 nor 5288 works for me, already tried to Google for years with no clue....

[veista]

Same here, however, I only have macs and linux servers, and most of the tools seems to require windows :/

What do you mean? For example qmodmaster works on linux and is open source. You just need to compile it yourself.

[veista]

I have a CTS700 and a Nilan compact P Air9 and would like to help, i use this config for my modbus connection today. https://pastebin.com/PZNHBRXM

Software is updated to latest version by Nilan last week

I will be happy to help with qmodmaster if someone can guide me.

What kind of guidance do you need? The software is pretty straight forward.

[veista]

What I need is: 1. dump of all register contents. This can be tedious. 2. A picture of the device type plate. 3. A clear correlation between register in modbus and function in HMI

[maisun]

What I need is: 1. dump of all register contents. This can be tedious. 2. A picture of the device type plate. 3. A clear correlation between register in modbus and function in HMI

Hi @veista : today I tried the tool QModMaster however couldn't really get it to work. I have the "older" version of CTS700 so all registers are below 10000. How can I dump all registers with their contents? It can only read max 100 at a time, and looks to me like if there is any unknown register it will just fail to get the rest values. I think I know the addresses of almost everything except for Active Cooling - the address is not documented in the ModBus technical document, so the best approach is to find a tool that can somehow can dump all registers and compare before/after the change.

[veista]

What I need is: 1. dump of all register contents. This can be tedious. 2. A picture of the device type plate. 3. A clear correlation between register in modbus and function in HMI

Hi @veista : today I tried the tool QModMaster however couldn't really get it to work. I have the "older" version of CTS700 so all registers are below 10000. How can I dump all registers with their contents? It can only read max 100 at a time, and looks to me like if there is any unknown register it will just fail to get the rest values. I think I know the addresses of almost everything except for Active Cooling - the address is not documented in the ModBus technical document, so the best approach is to find a tool that can somehow can dump all registers and compare before/after the change.

As I said this can be tedious. You can write your own dump tool that suits your needs better easily with python.

[maisun]

What I need is: 1. dump of all register contents. This can be tedious. 2. A picture of the device type plate. 3. A clear correlation between register in modbus and function in HMI

Hi @veista : today I tried the tool QModMaster however couldn't really get it to work. I have the "older" version of CTS700 so all registers are below 10000. How can I dump all registers with their contents? It can only read max 100 at a time, and looks to me like if there is any unknown register it will just fail to get the rest values. I think I know the addresses of almost everything except for Active Cooling - the address is not documented in the ModBus technical document, so the best approach is to find a tool that can somehow can dump all registers and compare before/after the change.

As I said this can be tedious. You can write your own dump tool that suits your needs better easily with python.

Ok thanks! I don’t think I have the skills and time for that sadly.