This solution assumes there is a display/control unit. However, I have an EcoPart 400, which I control manually on/off using an esp32, so there is no display to connect to.
However the manual for connecting displays (i.e. EcoLogic) says they should be connected using Liycy-cable to ports G51-53.
Could it be possible to connect the esp directly to those instead of to a display? Or does the display do some “translation” of protocals between the pump and display?
I also have a GSi 12, but it’s not working out of the box. Would you be so kind to tell me what you have changed, so that it will work with the GSI 12?
did you get this to work so you can share your esp code?
Do you have the display with 2 or 3 ports?
Yes, I got it working! Been working well for about a year now.
I noticed that the registers in the pdfs does not fully match so I spent some time to try and figure out the settings/data I want.
I think I have two ports in the panel, the indoor unit is from ~2016
Have a CTC Gsi 612 that I connected to home assistant via modbus. I have an outside sensor but no sensor inside.
Can you use my usual sensors around the house to adjust the heat (the curve I assume)? Thought of an average value that helps to adjust the heat up or down?
Will probably switch to electricity price per hour, so I’m thinking about if you can somehow get it to produce more heat, for example those hours the electricity price is low to produce less those hours it’s expensive.
With the hot water, I produce a little more when the solar panels provide good power.
Hi
I have an ecoparti612m and want to read data from it.
esphome:
name: aa
friendly_name: aa
esp8266:
board: d1_mini
# Enable logging
logger:
# Enable Home Assistant API
api:
encryption:
key: "Vs8FLUZTUKvZiib3DyNY9cvM10/pJ/RmbF595ucjo1o="
ota:
password: "1683179a14b3194a946387d29c6b0389"
wifi:
ssid: !secret wifi_ssid
password: !secret wifi_password
# Enable fallback hotspot (captive portal) in case wifi connection fails
ap:
ssid: "Aa Fallback Hotspot"
password: "OxIwoSueKf7r"
captive_portal:
uart:
id: mod_bus
tx_pin: D7
rx_pin: D5
baud_rate: 9600
parity: EVEN
stop_bits: 1
modbus:
#flow_control_pin: 12
send_wait_time: 500ms
id: modbus1
modbus_controller:
- id: epever
## the Modbus device addr
address: 1
modbus_id: modbus1
setup_priority: -10
update_interval: 10s
sensor:
- platform: modbus_controller
modbus_controller_id: epever
name: "Kompressor Status"
id: compressor_status
register_type: read
#state_class: "measurement"
address: 0x0000F241
#unit_of_measurement: "°C"
#device_class: "enum"
accuracy_decimals: 0
value_type: S_WORD
I connected the Esp8266 to the display with an RJ12 cable.
I can’t get any response from the pump.
INFO ESPHome 2023.9.3
INFO Reading configuration /config/esphome/aa.yaml...
INFO Starting log output from aa.local using esphome API
INFO Successfully connected to aa.local
[12:52:08][I][app:102]: ESPHome version 2023.9.3 compiled on Sep 1 2024, 12:32:14
[12:52:08][C][wifi:546]: WiFi:
[12:52:08][C][wifi:382]: Local MAC: XX:XX:XX:XX:XX:XX
[12:52:08][C][wifi:383]: SSID: 'XXXX'[redacted]
[12:52:08][C][wifi:384]: IP Address: XXX.XXX.XXX.XXX
[12:52:08][C][wifi:385]: BSSID: XX:XX:XX:XX:XX:XX[redacted]
[12:52:08][C][wifi:387]: Hostname: 'aa'
[12:52:08][C][wifi:389]: Signal strength: -69 dB ▂▄▆█
[12:52:08][C][wifi:393]: Channel: 10
[12:52:08][C][wifi:394]: Subnet: XX.xx.xx.xx
[12:52:08][C][wifi:395]: Gateway: x.x.x.x
[12:52:08][C][wifi:396]: DNS1: x.x.x.x
[12:52:08][C][wifi:397]: DNS2: 0.0.0.0
[12:52:08][C][logger:357]: Logger:
[12:52:08][C][logger:358]: Level: DEBUG
[12:52:08][C][logger:359]: Log Baud Rate: 115200
[12:52:08][C][logger:361]: Hardware UART: UART0
[12:52:08][C][uart.arduino_esp8266:102]: UART Bus:
[12:52:08][C][uart.arduino_esp8266:103]: TX Pin: GPIO13
[12:52:08][C][uart.arduino_esp8266:104]: RX Pin: GPIO14
[12:52:08][C][uart.arduino_esp8266:106]: RX Buffer Size: 256
[12:52:08][C][uart.arduino_esp8266:108]: Baud Rate: 9600 baud
[12:52:08][C][uart.arduino_esp8266:109]: Data Bits: 8
[12:52:08][C][uart.arduino_esp8266:110]: Parity: EVEN
[12:52:08][C][uart.arduino_esp8266:111]: Stop bits: 1
[12:52:08][C][uart.arduino_esp8266:115]: Using software serial
[12:52:08][C][modbus:143]: Modbus:
[12:52:08][C][modbus:145]: Send Wait Time: 500 ms
[12:52:08][C][modbus:146]: CRC Disabled: NO
[12:52:08][C][modbus_controller.sensor:010]: modbus_controller.sensorModbus Controller Sensor 'Kompressor Status'
[12:52:08][C][modbus_controller.sensor:010]: modbus_controller.sensor State Class: ''
[12:52:08][C][modbus_controller.sensor:010]: modbus_controller.sensor Unit of Measurement: ''
[12:52:08][C][modbus_controller.sensor:010]: modbus_controller.sensor Accuracy Decimals: 0
[12:52:08][C][captive_portal:088]: Captive Portal:
[12:52:08][C][mdns:115]: mDNS:
[12:52:08][C][mdns:116]: Hostname: aa
[12:52:08][C][ota:097]: Over-The-Air Updates:
[12:52:08][C][ota:098]: Address: aa.local:8266
[12:52:08][C][ota:101]: Using Password.
[12:52:08][C][api:138]: API Server:
[12:52:08][C][api:139]: Address: aa.local:6053
[12:52:08][C][api:141]: Using noise encryption: YES
[12:52:08][C][modbus_controller:298]: ModbusController:
[12:52:08][C][modbus_controller:299]: Address: 0x01
[12:52:18][D][modbus_controller:040]: Modbus command to device=1 register=0xF241 countdown=0 no response received - removed from send queue
[12:52:28][D][modbus_controller:040]: Modbus command to device=1 register=0xF241 countdown=0 no response received - removed from send queue
[12:52:38][D][modbus_controller:040]: Modbus command to device=1 register=0xF241 countdown=0 no response received - removed from send queue
[12:52:48][D][modbus_controller:040]: Modbus command to device=1 register=0xF241 countdown=0 no response received - removed from send queue
[12:52:58][D][modbus_controller:040]: Modbus command to device=1 register=0xF241 countdown=0 no response received - removed from send queue
[12:53:08][D][modbus_controller:040]: Modbus command to device=1 register=0xF241 countdown=0 no response received - removed from send queue
[12:53:18][D][modbus_controller:040]: Modbus command to device=1 register=0xF241 countdown=0 no response received - removed from send queue
[12:53:28][D][modbus_controller:040]: Modbus command to device=1 register=0xF241 countdown=0 no response received - removed from send queue
[12:53:38][D][modbus_controller:040]: Modbus command to device=1 register=0xF241 countdown=0 no response received - removed from send queue
[12:53:48][D][modbus_controller:040]: Modbus command to device=1 register=0xF241 countdown=0 no response received - removed from send queue
What am I doing wrong?
Hi!
I’m trying to find a nice solution how to connect my CTC GSI 16 to HomeAssistant. Is this project still up to date or has anyone tried to make HW on Wemos D1 ?
I have the 587057301 Display that has 2 RJ12 connnections in the back and only one connected to the Boiler/heatpump. This is not the display with ethernet/internet support.
Is this project the preferred solution to connect CTC Modbus to Home Assistant ?
Is the second RJ21 connection on the dislpay “modbus-out port” ?
Are there other HW solutions/projects available, either Wemos D1 or even simple Modbus to Ethernet if that’s easier.
I have my router next to the CTC GSi, so cable or Wifi doesn’t really matter.
Why I’m asking for Wemos project is because I have 2 free Wemos D1 boards available.
I know this thread is a bit old, but I’d appricate any reccommendations or help in getting data from my GSI into Home Assistant.
Hi,
My application have been working super for a long time, but after the latest update of the application and the ESP board, my application have stopped working.
Do some you user have the same problem, is the application not valid any longer?
I’m a bit confused about this github project. The thread and project seemed to be for CTC GSI but the parameter list is made for Ecoheat .
In the thread it’s comments about updated parameter list to make it work for GSI.
Anyone that has any updated code/config or parameterlist to share for GSI? I have a GSI16
@Beeny @Orikson @linesrg
I guess the code in Kaspars github project won’t work…
Any tips to share? I have everything connected to my EcoZenith i255 but I just keep getting the following error:
[08:03:06][D][modbus_controller:040]: Modbus command to device=1 register=0xF2CD no response received - removed from send queue
Did you mannage to solve this? I have the same problem.
Unfortunately, I was not able to solve this problem. I don’t know where the mistake is.
Did you manage to do it, buddy?
Nothing more than to make sure everything is hooked up correctly. My guess would be that data pins are wrong (tx/Rx swapped perhaps) or pins with some kind of special function is used. What esp are you using?
I tried to get my CTC GSi 12 to work but could not figure out the registers. I haven’t tried anymore to be honest.
But it’s true that the second port on the display is the modbus out port, at least on my older display (firmware 20200124). I also have the CTC internet module that connects to that port. I tried to connect this module in parallel to a Wemos D1 but this did not work. This is obvious because the CTC internet module acts as a Modbus master, just like the ESP32 would do. But on a modbus only one master is allowed.
Hi! Got pretty much the same response. Could also not see any values in HA device. I ditched the USB cable and connected power from the RJ12 connector instead (I did not dare to power it up with both USB and RJ12) and the readouts appeared directly in HA device info. Not sure why but maybe the modbus doesn’t work when the reference voltages do not match. But I am a happy imbecile rigth now 
This topic might get very important very soon, as CTC will discontinue the internet module for the old displays and the according CTC connect+ app at the end of 2025.
After that one might need to replace the display to a newer version, that includes a RJ-45 connector for network connection. Scroll down a bit to the “Get your heat pump ready for the latest software!” section
But as far as I know this only workes with the myUplink-App, which is even worse that the CTC connect+ app.
I did some testing today and now it works, at least the basic structure! I had to switch the RX and TX of the RJ-11 connector on the D1 mini. Propably because the TX of the display needs to be connected to the RX on the ESP32 (and the same for RX on the display and TX on the ESP32). But the configuration in ESP Home differs from that, so I really don’t know. Maybe there is an error in my wiring that I was unable to figure out until now…
Strangely I need to supply my D1 mini via the USB connector. I’m using the USB connector on the display to supply the D1 mini. The 5 V of the RJ-11 connector do nothing when connected to the D1, even though I can measure +5V on those pins?! I kept this connection still. So my connection looks like this:
| RJ-11 Pin1 | D1 Mini Pin |
|---|---|
| 1 (GND) | G (GND) |
| 2 (5V) | VUSB (5V) |
| 3 (not used) | not connected |
| 4 (RX) | TX (GPIO1) |
| 5 (Flow control) | D1 (GPIO5) |
| 6 (TX) | RX (GPIO3) |
This are the relevant settings in ESP Home:
# Enable logging
logger:
baud_rate: 0
uart:
id: mod_bus
tx_pin: GPIO3
rx_pin: GPIO1
baud_rate: 9600
parity: EVEN
stop_bits: 1
modbus:
flow_control_pin: GPIO5
send_wait_time: 500 ms
id: modbus1
Next problem I had was a strange value for the outdoor temperatur. I found out that there is an error in the code of kasper. value_type has to be S_WORD instead of U_WORD.
- platform: modbus_controller
modbus_controller_id: epever
name: "Outdoor temperature"
id: outdoor_temp
register_type: read
address: 0x025E
unit_of_measurement: "°C"
device_class: "temperature"
state_class: "measurement"
accuracy_decimals: 2
value_type: U_WORD
filters:
- multiply: 0.1
Now I need to add all the available registers for my GSi 12. Luckily this document has all the registers listed on the last pages including on which devices those values are available.
EDIT: I exported this ugly table in the PDF file containing the register mapping to a real table. Of course it’s still work in progress, but if you have any comments feel free to add those: CTC Modbus address register/complete BMS list - Google Sheets
Hi! I also have a GSi12 and are very interested in how to get this working. Is it something that you can share? Jesper, Sweden
Hi there,
This is my current config. It’s still a pretty big mess and some of the registers contain not usable values whereas other registers are still missing. But many important measurements are already available
name: heizung-ctc-gsi-12
friendly_name: Heizung CTC GSi 12
esp8266:
board: d1_mini
# Enable logging
logger:
baud_rate: 0
# Enable Home Assistant API
api:
encryption:
key: "abc"
ota:
- platform: esphome
password: "abc"
wifi:
ssid: !secret wifi_ssid
password: !secret wifi_password
# Enable fallback hotspot (captive portal) in case wifi connection fails
ap:
ssid: "Heizung-Ctc-Gsi-12"
password: "abc"
captive_portal:
# Enable Web server
web_server:
port: 80
uart:
id: mod_bus
tx_pin: GPIO3 # works!
rx_pin: GPIO1 # works!
baud_rate: 9600
parity: EVEN
stop_bits: 1
modbus:
flow_control_pin: GPIO5
send_wait_time: 500 ms
id: modbus1
modbus_controller:
- id: epever
## the Modbus device addr
address: 1
modbus_id: modbus1
setup_priority: -10
# Read-only registers
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
sensor:
- platform: modbus_controller
modbus_controller_id: epever
name: "Ext buffer tank upper B41"
id: Ext_buffer_tank_upper_temp
register_type: read
address: 0x0000F32A
unit_of_measurement: "°C"
device_class: "temperature"
state_class: "measurement"
accuracy_decimals: 1
value_type: S_WORD
filters:
- multiply: 0.1
- or:
- throttle: "12h"
- delta: 0.5
- platform: modbus_controller
modbus_controller_id: epever
name: "Ext buffer tank lower B42"
id: Ext_buffer_tank_lower_temp
register_type: read
address: 0x0000F32B
unit_of_measurement: "°C"
device_class: "temperature"
state_class: "measurement"
accuracy_decimals: 1
value_type: S_WORD
filters:
- multiply: 0.1
- or:
- throttle: "12h"
- delta: 0.5
- platform: modbus_controller
modbus_controller_id: epever
name: "Ext DHW buffer tank B43"
id: DHW_Ext_buffer_temp
register_type: read
address: 0x0000F32C
unit_of_measurement: "°C"
device_class: "temperature"
state_class: "measurement"
accuracy_decimals: 1
value_type: S_WORD
filters:
- multiply: 0.1
- or:
- throttle: "12h"
- delta: 0.5
- platform: modbus_controller
modbus_controller_id: epever
name: "Actual temperature tank solar coil"
id: solar_coil_temp
register_type: read
address: 0x0000F345
unit_of_measurement: "°C"
device_class: "temperature"
state_class: "measurement"
accuracy_decimals: 1
value_type: S_WORD
filters:
- multiply: 0.1
- or:
- throttle: "12h"
- delta: 0.5
- platform: modbus_controller
modbus_controller_id: epever
name: "SolarTankSelection"
id: SolarTankSelect_id_F374
register_type: read
address: 0x0000F374
accuracy_decimals: 0
value_type: U_WORD
- platform: modbus_controller
modbus_controller_id: epever
name: "SolarBedrockSelection"
id: SolarBedrockSel_id_F375
register_type: read
address: 0x0000F375
accuracy_decimals: 0
value_type: U_WORD
- platform: modbus_controller
modbus_controller_id: epever
name: "Outdoor temperature"
id: outdoor_temp
register_type: read
address: 0x0000F230 # Works
unit_of_measurement: "°C"
device_class: "temperature"
state_class: "measurement"
accuracy_decimals: 0
value_type: S_WORD
filters:
- multiply: 0.1
- or:
- throttle: "1h"
- delta: 0.5
- platform: modbus_controller
modbus_controller_id: epever
name: "Return temp"
id: Return_temp
register_type: read
address: 0x0000F23F
unit_of_measurement: "°C"
device_class: "temperature"
state_class: "measurement"
accuracy_decimals: 1
value_type: S_WORD
filters:
- multiply: 0.1
- platform: modbus_controller
modbus_controller_id: epever
name: "Heat pump 1 (A1) primary system flow"
id: Heat_pump_1_prim_flow_temp
register_type: read
address: 0x0000F353
unit_of_measurement: "°C"
device_class: "temperature"
state_class: "measurement"
accuracy_decimals: 1
value_type: S_WORD
filters:
- multiply: 0.1
- platform: modbus_controller
modbus_controller_id: epever
name: "Radiator return"
id: radiator_retur
register_type: read
address: 0x027A # reasonable values, but needs further clarification ??????
unit_of_measurement: "°C"
device_class: "temperature"
state_class: "measurement"
accuracy_decimals: 1
value_type: S_WORD
filters:
- multiply: 0.1
- or:
- throttle: "1h"
- delta: 0.2
- platform: modbus_controller
modbus_controller_id: epever
name: "Radiator Vorlauf"
id: radiator_frem
register_type: read
address: 0x0278 # reasonable values, but needs further clarification ??????
unit_of_measurement: "°C"
device_class: "temperature"
state_class: "measurement"
accuracy_decimals: 1
value_type: S_WORD
filters:
- multiply: 0.1
- or:
- throttle: "1h"
- delta: 0.2
- platform: modbus_controller
modbus_controller_id: epever
name: "Primary Flow Temp"
id: pri_flo_temp
register_type: read
address: 0x025F # reasonable values, but needs further clarification ??????
unit_of_measurement: "°C"
device_class: "temperature"
state_class: "measurement"
accuracy_decimals: 0
value_type: S_WORD
filters:
- multiply: 0.1
- or:
- throttle: "1h"
- delta: 0.5
- platform: modbus_controller
modbus_controller_id: epever
name: "Heat pump in"
id: heat_pump_in_temp
register_type: read
address: 0x0000F24B # testing
unit_of_measurement: "°C"
device_class: "temperature"
state_class: "measurement"
accuracy_decimals: 1
value_type: S_WORD
filters:
- multiply: 0.1
- or:
- throttle: "1h"
- delta: 0.5
- platform: modbus_controller
modbus_controller_id: epever
name: "Heat pump out"
id: heat_pump_out_temp
register_type: read
address: 0x0000F255 # testing
unit_of_measurement: "°C"
device_class: "temperature"
state_class: "measurement"
accuracy_decimals: 1
value_type: S_WORD
filters:
- multiply: 0.1
- or:
- throttle: "1h"
- delta: 0.5
- platform: modbus_controller
modbus_controller_id: epever
name: "Condenser in"
id: con_in
register_type: read
address: 0x025D # reasonable values, but unknown what this is ??????
unit_of_measurement: "°C"
device_class: "temperature"
state_class: "measurement"
accuracy_decimals: 0
value_type: S_WORD
filters:
- multiply: 0.1
- or:
- throttle: "1h"
- delta: 0.2
- platform: modbus_controller
modbus_controller_id: epever
name: "Condenser out"
id: con_out
register_type: read
address: 0x025C # reasonable values, but unknown what this is ??????
unit_of_measurement: "°C"
device_class: "temperature"
state_class: "measurement"
accuracy_decimals: 0
value_type: S_WORD
filters:
- multiply: 0.1
- or:
- throttle: "1h"
- delta: 0.2
- platform: modbus_controller
modbus_controller_id: epever
name: "Radiator pump setting %"
id: Radiator_pump_percent
register_type: read
address: 0x0000F082
unit_of_measurement: "%"
state_class: "measurement"
accuracy_decimals: 0
value_type: S_WORD
- platform: modbus_controller
modbus_controller_id: epever
name: "EHS: Temperature"
id: EHS_temp
register_type: read
address: 0x0000F2E0 # strange values
unit_of_measurement: "°C"
device_class: "temperature"
state_class: "measurement"
accuracy_decimals: 1
value_type: S_WORD
filters:
- multiply: 0.1
- or:
- throttle: "1h"
- delta: 0.5
- platform: modbus_controller
modbus_controller_id: epever
name: "EHS: open shunt degrees"
id: EHS_open_shunt_degrees
register_type: read
address: 0x0000F094
unit_of_measurement: "°"
state_class: "measurement"
accuracy_decimals: 1
value_type: S_WORD
filters:
- multiply: 0.1
- platform: modbus_controller
modbus_controller_id: epever
name: "Heating system 1: Heating on time"
id: Heating_system1_heating_time
register_type: read
address: 0x0000F11D
unit_of_measurement: "min"
device_class: "duration"
state_class: "measurement"
accuracy_decimals: 1
value_type: S_WORD
- platform: modbus_controller
modbus_controller_id: epever
name: "DHW: Stop temperature"
id: Stop_DHW_temp
register_type: read
address: 0x0000F231
unit_of_measurement: "°C"
device_class: "temperature"
accuracy_decimals: 0
value_type: S_WORD
filters:
- multiply: 0.1
- or:
- throttle: "24h"
- delta: 1
- platform: modbus_controller
modbus_controller_id: epever
name: "DHW: Upper tank temperature"
id: upper_tank_temp
register_type: read
address: 0x0259 # reasonable values, but needs further clarification ??????
unit_of_measurement: "°C"
device_class: "temperature"
state_class: "measurement"
accuracy_decimals: 1
value_type: S_WORD
filters:
- multiply: 0.1
- or:
- throttle: "2h"
- delta: 0.5
- platform: modbus_controller
modbus_controller_id: epever
name: "DHW: Upper temperature"
id: Actual_DHW_temp
register_type: read
address: 0x0000F344
unit_of_measurement: "°C"
device_class: "temperature"
state_class: "measurement"
accuracy_decimals: 1
value_type: S_WORD
filters:
- multiply: 0.1
- or:
- throttle: "2h"
- delta: 0.5
- platform: modbus_controller
modbus_controller_id: epever
name: "DHW: Lower temperature"
id: Actual_DHW_lower_temp
register_type: read
address: 0x0000F343
unit_of_measurement: "°C"
device_class: "temperature"
state_class: "measurement"
accuracy_decimals: 1
value_type: S_WORD
filters:
- multiply: 0.1
- or:
- throttle: "2h"
- delta: 0.5
- platform: modbus_controller
modbus_controller_id: epever
name: "DHW: Current capacity"
id: Current_DHW_capacity_percent
register_type: read
address: 0x0000F347
unit_of_measurement: "%"
state_class: "measurement"
accuracy_decimals: 0
value_type: S_WORD
filters:
- multiply: 0.1
- or:
- throttle: "2h"
- delta: 1
- platform: modbus_controller
modbus_controller_id: epever
name: "DHW: Setpoint outlet temperature"
id: Setpoint_DHW_outlet_temp
register_type: read
address: 0x0000F232
unit_of_measurement: "°C"
device_class: "temperature"
accuracy_decimals: 0
value_type: S_WORD
filters:
- multiply: 0.1
- or:
- throttle: "12h"
- delta: 1
- platform: modbus_controller
modbus_controller_id: epever
name: "DHW: Hot water temperature"
id: hot_water_temp
register_type: read
address: 0x0000F233
unit_of_measurement: "°C"
device_class: "temperature"
state_class: "measurement"
accuracy_decimals: 1
value_type: S_WORD
filters:
- filter_out: 9999
- multiply: 0.1
- or:
- throttle: "1h"
- delta: 0.5
- platform: modbus_controller
modbus_controller_id: epever
name: "DHW: Pump"
id: DHW_pump_percent
register_type: read
address: 0x0000F373
unit_of_measurement: "%"
state_class: "measurement"
accuracy_decimals: 1
value_type: U_WORD
filters:
- or:
- throttle: "2h"
#- delta: 0.1
- platform: modbus_controller
modbus_controller_id: epever
name: "DHW: Circulation"
id: DHW_circulation
register_type: read
address: 0x0000F240
state_class: "measurement"
accuracy_decimals: 1
value_type: S_WORD
filters:
- multiply: 0.1
- or:
- throttle: "2h"
- delta: 0.5
- platform: modbus_controller
modbus_controller_id: epever
name: "DHW: Hot Water Valve"
id: Hot_Water_Valve
register_type: read
address: 0x0000F369
state_class: "measurement"
accuracy_decimals: 1
value_type: U_WORD
- platform: modbus_controller
modbus_controller_id: epever
name: "DHW: Extra hot water"
id: extra_hot_water
register_type: read
address: 0x0000F03F
state_class: "measurement"
value_type: U_WORD
accuracy_decimals: 1
filters:
- or:
- throttle: "12h"
- delta: 1
- platform: modbus_controller
modbus_controller_id: epever
name: "Radiator Pump 1"
id: Radiator_Pump_1_percent
register_type: read
address: 0x0000F360
unit_of_measurement: "%"
state_class: "measurement"
accuracy_decimals: 0
value_type: U_WORD
- platform: modbus_controller
modbus_controller_id: epever
name: "Radiator Pump 2"
id: Radiator_Pump_2_percent
register_type: read
address: 0x0000F361
unit_of_measurement: "%"
state_class: "measurement"
accuracy_decimals: 0
value_type: U_WORD
- platform: modbus_controller
modbus_controller_id: epever
name: "Power kW immersion heater"
id: immersion_heater_kW
register_type: read
address: 0x0000F399
unit_of_measurement: "kW"
device_class: "power"
state_class: "measurement"
accuracy_decimals: 1
value_type: U_WORD
filters:
- multiply: 0.1
- or:
- throttle: "12h"
- delta: 0.2
- platform: modbus_controller
modbus_controller_id: epever
name: "HP1 Power consumption kW"
id: HP1_power_kW
register_type: read
address: 0x0000F37B
unit_of_measurement: "kW"
device_class: "power"
state_class: "measurement"
accuracy_decimals: 1
value_type: U_WORD
filters:
- multiply: 0.1
- or:
- throttle: "12h"
- delta: 0.2
- platform: modbus_controller
modbus_controller_id: epever
name: "Heat pump discharge"
id: heat_pump_discharge_temp
register_type: read
address: 0x0000F25F # testing
unit_of_measurement: "°C"
device_class: "temperature"
state_class: "measurement"
accuracy_decimals: 1
value_type: S_WORD
filters:
- multiply: 0.1
- or:
- throttle: "1h"
- delta: 0.5
- platform: modbus_controller
modbus_controller_id: epever
name: "Heat pump suction gas"
id: heat_pump_suction_gas_temp
register_type: read
address: 0x0000F269 # testing
unit_of_measurement: "°C"
device_class: "temperature"
state_class: "measurement"
accuracy_decimals: 1
value_type: S_WORD
filters:
- multiply: 0.1
- or:
- throttle: "1h"
- delta: 0.5
- platform: modbus_controller
modbus_controller_id: epever
name: "Heat pump high pressure"
id: heat_pump_high_pressure
register_type: read
address: 0x0000F273 # testing
#unit_of_measurement: "°C"
device_class: "pressure"
state_class: "measurement"
accuracy_decimals: 1
value_type: S_WORD
filters:
- multiply: 0.1
- or:
- throttle: "1h"
- delta: 0.5
- platform: modbus_controller
modbus_controller_id: epever
name: "Heat pump low pressure"
id: heat_pump_low_pressure
register_type: read
address: 0x0000F27D # testing
#unit_of_measurement: "°C"
device_class: "pressure"
state_class: "measurement"
accuracy_decimals: 1
value_type: S_WORD
filters:
- multiply: 0.1
- or:
- throttle: "1h"
- delta: 0.5
- platform: modbus_controller
modbus_controller_id: epever
name: "Diff thermostat"
id: diff_thermostat_temp
register_type: read
address: 0x0000F2DF # testing
unit_of_measurement: "°C"
device_class: "temperature"
state_class: "measurement"
accuracy_decimals: 1
value_type: S_WORD
filters:
- multiply: 0.1
- or:
- throttle: "1h"
- delta: 0.5
- platform: modbus_controller
modbus_controller_id: epever
name: "Solar out"
id: solar_out_temp
register_type: read
address: 0x0000F2E6 # testing
unit_of_measurement: "°C"
device_class: "temperature"
state_class: "measurement"
accuracy_decimals: 1
value_type: S_WORD
filters:
- multiply: 0.1
- or:
- throttle: "1h"
- delta: 0.5
- platform: modbus_controller
modbus_controller_id: epever
name: "Solar in"
id: solar_in_temp
register_type: read
address: 0x0000F2E7 # testing
unit_of_measurement: "°C"
device_class: "temperature"
state_class: "measurement"
accuracy_decimals: 1
value_type: S_WORD
filters:
- multiply: 0.1
- or:
- throttle: "1h"
- delta: 0.5
- platform: modbus_controller
modbus_controller_id: epever
name: "Tank timer"
id: tank_timer
register_type: read
address: 0x0000F2E9 # testing
#unit_of_measurement: "°C"
device_class: "duration"
state_class: "measurement"
accuracy_decimals: 1
value_type: S_WORD
- platform: modbus_controller
modbus_controller_id: epever
name: "Heat pump Current RPS"
id: heat_pump_current_RPS
register_type: read
address: 0x0000F2F1 # testing
device_class: "frequency"
state_class: "measurement"
accuracy_decimals: 0
value_type: S_WORD
filters:
- multiply: 0.1
- or:
- throttle: "1h"
- delta: 1
- platform: modbus_controller
modbus_controller_id: epever
name: "Brine in"
id: brine_ind
register_type: read
address: 0x0000F287
unit_of_measurement: "°C"
device_class: "temperature"
state_class: "measurement"
accuracy_decimals: 1
value_type: U_WORD
filters:
- multiply: 0.1
- or:
- throttle: "1h"
- delta: 0.2
- platform: modbus_controller
modbus_controller_id: epever
name: "Brine out"
id: brine_ud
register_type: read
address: 0x0000F291
unit_of_measurement: "°C"
device_class: "temperature"
state_class: "measurement"
accuracy_decimals: 1
value_type: U_WORD
filters:
- multiply: 0.1
- or:
- throttle: "1h"
- delta: 0.2
- platform: modbus_controller
modbus_controller_id: epever
name: "Degree minute"
id: degree_minute
register_type: read
address: 0x0000F2D7 # Working
unit_of_measurement: "°C min"
device_class: "temperature"
state_class: "measurement"
entity_category: DIAGNOSTIC
accuracy_decimals: 0
value_type: S_WORD
filters:
- multiply: 0.1
- or:
- throttle: "1h"
- delta: 1
- platform: modbus_controller
modbus_controller_id: epever
name: "Start at degree minute"
id: Start_at_degree
register_type: read
address: 0x0000F083
unit_of_measurement: "°C min"
device_class: "temperature"
accuracy_decimals: 0
value_type: S_WORD
entity_category: DIAGNOSTIC
filters:
- or:
- throttle: "12h"
- delta: 1
- platform: modbus_controller
modbus_controller_id: epever
name: "Adjustment °C"
id: adjustment_sensor
register_type: read
address: 0x0000F04D # Working
unit_of_measurement: "°C"
device_class: "temperature"
entity_category: DIAGNOSTIC
accuracy_decimals: 0
value_type: S_WORD
filters:
- multiply: 0.1
- or:
- throttle: "12h"
- delta: 0.5
- platform: modbus_controller
modbus_controller_id: epever
name: "Alarm 1"
id: alarm_1
register_type: read
address: 0x0226
entity_category: DIAGNOSTIC
accuracy_decimals: 0
value_type: U_WORD
filters:
- or:
- throttle: "12h"
- delta: 1
- platform: modbus_controller
modbus_controller_id: epever
name: "Alarm 2"
id: alarm_2
register_type: read
address: 0x0227
entity_category: DIAGNOSTIC
accuracy_decimals: 0
value_type: U_WORD
filters:
- or:
- throttle: "12h"
- delta: 1
- platform: modbus_controller
modbus_controller_id: epever
name: "Present alarms/info"
id: alarm_info_overview
register_type: read
address: 0x0000FE6D
entity_category: DIAGNOSTIC
accuracy_decimals: 0
value_type: U_WORD
- platform: modbus_controller
modbus_controller_id: epever
name: "Heat pump 1 (A1): Max RPS"
id: Heat_pump_1_max_RPS
register_type: read
address: 0x0000F084
unit_of_measurement: "RPS"
device_class: "frequency"
accuracy_decimals: 0
value_type: S_WORD
entity_category: DIAGNOSTIC
filters:
- or:
- throttle: "12h"
- delta: 1
- multiply: 0.1
- platform: modbus_controller
modbus_controller_id: epever
name: "Solar: EHS‐tank charge temp"
id: Solar_EHS_tank_charge_temp
register_type: read
address: 0x0000F0CD
entity_category: DIAGNOSTIC
unit_of_measurement: "°C"
device_class: "temperature"
accuracy_decimals: 0
value_type: S_WORD
filters:
- or:
- throttle: "12h"
- delta: 1
- multiply: 0.1
- platform: modbus_controller
modbus_controller_id: epever
name: "Solar: X‐tank charge temp"
id: Solar_X_tank_charge_temp
register_type: read
address: 0x0000F0CE
entity_category: DIAGNOSTIC
unit_of_measurement: "°C"
device_class: "temperature"
accuracy_decimals: 0
value_type: S_WORD
filters:
- or:
- throttle: "12h"
- delta: 1
- multiply: 0.1
- platform: modbus_controller
modbus_controller_id: epever
name: "Solar: Eco‐tank charge temp"
id: Solar_Eco_tank_charge_temp
register_type: read
address: 0x0000F0CF
entity_category: DIAGNOSTIC
unit_of_measurement: "°C"
device_class: "temperature"
accuracy_decimals: 0
value_type: S_WORD
filters:
- or:
- throttle: "12h"
- delta: 1
- multiply: 0.1
- platform: modbus_controller
modbus_controller_id: epever
name: "Software version"
id: software_version
register_type: read
address: 0x0000F2CD
entity_category: DIAGNOSTIC
value_type: S_WORD # was U_WORD
accuracy_decimals: 0
filters:
- or:
- throttle: "48h"
- delta: 1
- platform: modbus_controller
modbus_controller_id: epever
name: "Heatpump type"
id: heat_pump_type
register_type: read
address: 0x0000F32E
entity_category: DIAGNOSTIC
value_type: U_WORD
filters:
- or:
- throttle: "48h"
- delta: 1
- platform: modbus_controller
modbus_controller_id: epever
name: "Register 214"
id: reg214
register_type: read
address: 0x000000D6
entity_category: DIAGNOSTIC
accuracy_decimals: 1
value_type: S_WORD
filters:
- multiply: 0.1
- or:
- throttle: "12h"
- delta: 0.5
text_sensor:
- platform: modbus_controller
modbus_controller_id: epever
name: "Heat pump Status"
id: heat_pump_status_text
register_type: read
address: 0x0000F241 # working
entity_category: DIAGNOSTIC
lambda: !lambda |-
uint16_t int_mode = (data[item->offset] << 8) + data[item->offset+1];
ESP_LOGD("main","Parsed operation mode int : %d", int_mode);
std::string mode_str;
switch (int_mode) {
case 0: mode_str = "Compressor off, start delay"; break;
case 1: mode_str = "Compressor off, ready to start"; break;
case 2: mode_str = "Compressor wait until flow"; break;
case 3: mode_str = "Compressor on, heating"; break;
case 4: mode_str = "Defrost active"; break;
case 5: mode_str = "Compressor on, cooling"; break;
case 6: mode_str = "Compressor off, blocked"; break;
case 7: mode_str = "Compressor off, alarm"; break;
case 8: mode_str = "Function test"; break;
case 30: mode_str = "HP not defined"; break;
case 31: mode_str = "Compressor not enabled"; break;
case 32: mode_str = "Communication error"; break;
case 33: mode_str = "Charge DHW"; break;
default: mode_str = "Unknown (" + std::to_string(int_mode) +")"; break;
}
return mode_str;
- platform: modbus_controller
modbus_controller_id: epever
name: "Status ???"
id: any_status_text
register_type: read
address: 0x0000F235
entity_category: DIAGNOSTIC
lambda: !lambda |-
uint16_t int_mode = (data[item->offset] << 8) + data[item->offset+1];
ESP_LOGD("main","Parsed operation mode int : %d", int_mode);
std::string mode_str;
switch (int_mode) {
case 0: mode_str = "HP upper"; break;
case 1: mode_str = "HP lower"; break;
case 2: mode_str = "Add"; break;
case 3: mode_str = "HP + Add"; break;
case 4: mode_str = "HC"; break;
case 5: mode_str = "DHW"; break;
case 6: mode_str = "Pool"; break;
case 7: mode_str = "Off"; break;
case 8: mode_str = "Heating mix"; break;
case 9: mode_str = "Wood"; break;
case 10: mode_str = "DHW/HC"; break;
case 11: mode_str = "Cooling"; break;
case 12: mode_str = "Swap"; break;
default: mode_str = "Unknown (" + std::to_string(int_mode) +")"; break;
}
return mode_str;
- platform: modbus_controller
modbus_controller_id: epever
name: "Heating system 1 status"
id: heat_system1_status_text
register_type: read
address: 0x0000F326
entity_category: DIAGNOSTIC
filters:
lambda: !lambda |-
uint16_t int_mode = (data[item->offset] << 8) + data[item->offset+1];
ESP_LOGD("main","Parsed operation mode int : %d", int_mode);
std::string mode_str;
switch (int_mode) {
case 0: mode_str = "Heating off"; break;
case 1: mode_str = "Vacation"; break;
case 2: mode_str = "Night reduction"; break;
case 3: mode_str = "On (normal mode)"; break;
default: mode_str = "Unknown (" + std::to_string(int_mode) +")"; break;
}
return mode_str;
- platform: modbus_controller
modbus_controller_id: epever
name: "Heating mode"
register_type: read
address: 0x0000F066
entity_category: DIAGNOSTIC
lambda: !lambda |-
uint16_t int_mode = (data[item->offset] << 8) + data[item->offset+1];
ESP_LOGD("main","Parsed operation mode int : %d", int_mode);
std::string mode_str;
switch (int_mode) {
case 0: mode_str = "Auto"; break;
case 1: mode_str = "On"; break;
case 2: mode_str = "Off"; break;
default: mode_str = "Unknown (" + std::to_string(int_mode) +")"; break;
}
return mode_str;
binary_sensor:
- platform: modbus_controller
modbus_controller_id: epever
id: charge_pump
name: "Charge pump"
register_type: read
address: 0x0000F29B
- platform: modbus_controller
modbus_controller_id: epever
id: brine_pump
name: "Brine pump"
register_type: read
address: 0x0000F2A5
- platform: modbus_controller
modbus_controller_id: epever
id: compressor_blocked
name: "Compressor blocked" # 0 = Blocked 1 = Allowed
register_type: read
address: 0x0000F051
filters:
- invert:
- platform: modbus_controller
modbus_controller_id: epever
name: "Pump Diff thermostat"
id: pump_diff_thermostat
register_type: read
address: 0x0000F2DE # testing
- platform: modbus_controller
modbus_controller_id: epever
name: "EHS: Primary flow Mode" # 0 = not used 1 = EHS used for heating
id: EHS_Primary_flow_mode
register_type: read
address: 0x0000F2E1
- platform: modbus_controller
modbus_controller_id: epever
name: "Solar Mode"
id: solar_mode
register_type: read
address: 0x0000F2E5 # testing
- platform: modbus_controller
modbus_controller_id: epever
name: "Solar Pump panel"
id: solar_pump_panel
register_type: read
address: 0x0000F2E8 # testing
This are some of the writable registers. Be aware that the CTC manual warns from writing those registers too often, as it will destroy the display. Propably because of the limited write cycles of the EEPROMS used to store those values.
There are also other registers that can be written without the issue of destroying the display, as you can see in this sheet. But I did not yet included those in my config. CTC Modbus address register/complete BMS list - Google Sheets
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# Commented out as it is not good to write those registers too often
# number:
# - platform: modbus_controller
# modbus_controller_id: epever
# id: extra_hot_water_timer
# name: "Extra hot water timer"
# address: 0x0000F03F
# value_type: U_WORD
# min_value: 0
# max_value: 20
# step: 0.5
# mode: box
# lambda: "return x * 1.;"
# write_lambda: |-
# ESP_LOGD("main","Modbus Number incoming value = %f",x);
# uint16_t b_capacity = x;
# payload.push_back(b_capacity);
# return x * 1.0 ;
# ## multiply is ignored because lamdba is used
# multiply: 1.0
# - platform: modbus_controller
# modbus_controller_id: epever
# id: inclination_number
# name: "Inclination"
# address: 0x0000F049
# value_type: U_WORD
# min_value: 25
# max_value: 85
# mode: box
# step: 1
# lambda: "return x * 0.1;"
# write_lambda: |-
# ESP_LOGD("main","Modbus Number incoming value = %f",x);
# uint16_t c_capacity = x * 10;
# payload.push_back(c_capacity);
# return x * 1.0 ;
# ## multiply is ignored because lamdba is used
# multiply: 1
# - platform: modbus_controller
# modbus_controller_id: epever
# id: adjustment_number
# name: "Adjustment °C"
# address: 0x0000F04D
# value_type: S_WORD
# min_value: -20
# max_value: 20
# mode: box
# step: 1
# lambda: "return x * 0.1;"
# write_lambda: |-
# ESP_LOGD("main","Modbus Number incoming value = %f",x);
# uint16_t c_capacity = x * 10;
# payload.push_back(c_capacity);
# return x * 1.0 ;
# ## multiply is ignored because lamdba is used
# multiply: 1
# - platform: modbus_controller
# modbus_controller_id: epever
# id: Radiator_pump_setting_percent
# name: "Radiator pump setting %"
# address: 0x0000F066
# value_type: S_WORD
# min_value: 0
# max_value: 100
# mode: box
# step: 1
# lambda: "return x * 1;"
# write_lambda: |-
# ESP_LOGD("main","Modbus Number incoming value = %f",x);
# uint16_t c_capacity = x * 1;
# payload.push_back(c_capacity);
# return x * 1;
# ## verify calculation
# ## multiply is ignored because lamdba is used
# multiply: 1
# - platform: modbus_controller
# modbus_controller_id: epever
# id: degree_minute_start
# name: "Degree minute start"
# address: 0x0000F083
# value_type: S_WORD
# min_value: -900
# max_value: -30
# mode: box
# step: 1
# lambda: "return x * 1;"
# write_lambda: |-
# ESP_LOGD("main","Modbus Number incoming value = %f",x);
# uint16_t c_capacity = x * 1;
# payload.push_back(c_capacity);
# return x * 1;
# ## verify calculation
# ## multiply is ignored because lamdba is used
# multiply: 1
# - platform: modbus_controller
# modbus_controller_id: epever
# id: compressor_max_RPS
# name: "Compressor max RPS"
# address: 0x0000F084
# value_type: S_WORD
# min_value: 50
# max_value: 100
# mode: box
# step: 1
# lambda: "return x * 0.1;"
# write_lambda: |-
# ESP_LOGD("main","Modbus Number incoming value = %f",x);
# uint16_t c_capacity = x * 10;
# payload.push_back(c_capacity);
# return x * 1;
# ## verify calculation
# ## multiply is ignored because lamdba is used
# multiply: 1
# select:
# - platform: modbus_controller
# name: "Heating mode"
# id: heating_status
# address: 0x0000F066
# value_type: U_WORD
# optionsmap:
# "Auto": 0
# "On": 1
# "Off": 2