--- title: "Ecoforest HP24" description: "Ecoforest ecoGEO/ecoAIR heat pump integration via Modbus RTU over RS-485 BMS2 port." url: "https://taphome.com/en/compatibility/ecoforest-hp24/" language: en lastmod: 2026-10-08 generator: hugo ai: topics: ["modbus-rtu","heat-pump","rs485","bms","geothermal","dhw","compressor"] questions: ["How to integrate Ecoforest heat pump with TapHome?","What does the Ecoforest HP24 TapHome template monitor?","How to connect Ecoforest heat pump via RS-485 to TapHome?","How to enable BUS control on an Ecoforest heat pump?","What is the default Modbus slave address for Ecoforest heat pumps?","How to monitor compressor diagnostics on Ecoforest via TapHome?"] --- # Ecoforest HP24 Communication: Modbus RTU - [Ecoforest Official Website](https://ecoforest.com) The Ecoforest HP24 template connects Ecoforest ecoGEO and ecoAIR heat pumps to TapHome via Modbus RTU over the RS-485 BMS2 port. The template provides comprehensive monitoring of temperatures, production mode statuses, compressor diagnostics, power output, setpoints, and operation program. The heat pump controller (Carel pCOOEM+) has two RS-485 ports: BMS1 (requires optional serial card) and BMS2 (available by default). Communication uses **Slave ID 17** by default for heat pumps. > [!WARNING] > **Important — Slave ID** > > The default Modbus Slave ID for Ecoforest heat pumps is **17** (not 1). When importing the template in TapHome, change the Slave ID parameter from the default value of 1 to **17** (or your configured address). ## Hardware connection ### Controller overview The Ecoforest heat pump uses a Carel pCOOEM+ controller board. The BMS2 port (leftmost connector group) is the primary RS-485 interface for Modbus RTU communication and is available by default — no additional hardware is needed. ![Carel pCOOEM+ controller board — BMS2 and FieldBus1 on the left, BMS1 Serial Card and pLAN in the center, FieldBus2 on the right](https://taphome.com/images/compatibility/ecoforest-hp24/controller-pcb-p007-07_hu_b076b9bbebccde5e.jpg) **Connectors (left to right):** - **BMS2** (far left) — Primary RS-485 Modbus port (Tx/Rx-, Tx/Rx+, GND) — available by default - **FieldBus1** (left) — Internal communication - **BMS1 / Serial Card** (center-left) — Secondary RS-485 port — requires optional serial connection card - **pLAN** (center) — Controller area network - **FieldBus2** (far right) — Internal communication ### Technical specifications - **Communication port:** BMS2 (RS-485) - **Protocol:** Modbus RTU (holding registers, function code 0x03 / 0x06 / 0x10) - **Baud rate:** 19200 - **Parity:** None - **Stop bits:** 2 - **Data bits:** 8 - **Default Slave ID:** 17 (heat pump) ### RS-485 wiring (BMS2 port) Connect using a **3-wire shielded twisted pair cable**: - **Tx/Rx+** (pin A+) on BMS2 --> A+/D+ on TapHome RS-485 - **Tx/Rx-** (pin B-) on BMS2 --> B-/D- on TapHome RS-485 - **GND** on BMS2 --> GND on TapHome power supply (**mandatory**) **Cable specification:** - Type: shielded 3-wire twisted pair - Shield connected to earth to avoid interference - Do not install the cable parallel to power cabling > [!WARNING] > **Important — Grounding and cable** > > Use shielded 3-wire twisted pair cables only. Connect the cable shield to earth. Do not run the RS-485 cable parallel to power cabling. The GND wire **must** be connected between the heat pump controller and TapHome. ## Enabling Modbus communication Before TapHome can communicate with the Ecoforest heat pump, BUS control must be enabled in the heat pump installer menu. This is a two-step process: configuring the BMS2 port and enabling BUS remote control. ### Step 1 — Verify BMS2 port configuration Navigate to the BMS2 configuration screen in the installer menu: 1. Go to **Installer menu** --> **c. Installation** (page 6/8) 2. Select **f. Remote control** 3. Scroll to page **3/3** of Remote control 4. Select **c. BUS Control** 5. Verify the BMS2 configuration shows: - **Protocol:** MB Extended - **Baudrate:** 19200 - **Stop bits:** 2 - **Parity:** None - **Address:** 17 ![Ecoforest installer menu navigation — Installer menu → Installation (page 6/8) → f.Remote control → page 3/3 → c.BUS Control → BMS2 configuration: Protocol MB Extended, Baudrate 19200, Stop bits 2, Parity None, Address 17](https://taphome.com/images/compatibility/ecoforest-hp24/bms2-config-p008-08_hu_ee49366cd6510342.jpg) ### Step 2 — Enable BUS remote control BUS control must be explicitly enabled for the heat pump to accept Modbus commands: 1. Go to **Installer menu** --> **c. Installation** (page 6/8) 2. Select **f. Remote control** 3. Scroll to page **3/3** of Remote control 4. Select **c. BUS Control** 5. In the **BMS remote control** screen, check the **Enable** checkbox ![Ecoforest installer menu navigation — Installer menu → Installation (page 6/8) → f.Remote control → page 3/3 → c.BUS Control → BMS remote control with Enable checkbox checked](https://taphome.com/images/compatibility/ecoforest-hp24/bus-enablement-p009-09_hu_69969cf8157e1699.jpg) > [!TIP] > BUS Control is option **c** on page **3/3** of the Remote control submenu. Pages 1/3 and 2/3 contain EVU/SG Control and Services Control — scroll past them to reach BUS Control. ## Device capabilities ### Temperature monitoring The template provides extensive temperature monitoring across the heat pump's hydraulic circuits and refrigerant cycle: **Hydraulic circuit temperatures (all /10 conversion, °C):** - **Outdoor Temperature** (H:2080) — ambient outdoor temperature, with freeze/overheat security alerts - **Primary Circuit Inlet Temperature** (H:2082) — source-side water inlet - **Primary Circuit Outlet Temperature** (H:2081) — source-side water outlet - **Secondary Circuit Inlet Temperature** (H:2085) — load-side water inlet - **Secondary Circuit Outlet Temperature** (H:2084) — load-side water outlet - **Heating Buffer Tank Temperature** (H:2132) — heating buffer tank - **Cooling Buffer Tank Temperature** (H:2133) — cooling buffer tank - **DHW Tank Temperature** (H:2130) — domestic hot water tank - **DHW Recirculation Temperature** (H:2131) — DHW recirculation loop **Refrigerant cycle temperatures (all /10 conversion except evaporation, °C):** - **Compressor Suction Temperature** (H:2092) — refrigerant suction line - **Compressor Discharge Temperature** (H:2095) — compressor discharge / scroll - **Superheat** (H:2096) — refrigerant superheat (suction minus evaporation) - **Inverter Temperature** (H:2097) — compressor inverter electronics - **Evaporation Temperature** (H:2098) — refrigerant evaporation (uses /100 in template) - **Condensing Temperature** (H:2099) — refrigerant condensing ### Setpoint monitoring The template reads current setpoints for all services (all /10 conversion, °C): - **DHW Setpoint** (H:2150) — domestic hot water target temperature - **Buffer Heating Setpoint** (H:2152) — heating buffer tank target - **Buffer Cooling Setpoint** (H:2153) — cooling buffer tank target - **HTR Setpoint** (H:2154) — High Temperature Recovery (HTR) target temperature - **Group 1 Heating Setpoint** (H:2155) — zone 1 heating target - **Group 1 Cooling Setpoint** (H:2156) — zone 1 cooling target > [!TIP] > The setpoint registers are read-only in this template. To write setpoints via Modbus, use the corresponding write registers (H:2720 for DHW, H:2722 for buffer heating, etc.) which require enabling the BUS control for each service first. These can be added as custom Modbus devices in TapHome. ### Production mode statuses Binary status indicators showing which services are currently active: - **DHW Production Mode** (H:2030) — domestic hot water production running - **Heating Production Mode** (H:2031) — heating production running - **Active Cooling Mode** (H:2032) — active cooling production running - **Passive Cooling Mode** (H:2033) — passive (free) cooling running - **Pool Production Mode** (H:2034) — pool heating running - **Anti-Freeze Mode** (C:2035) — anti-freeze protection active - **Dry Floor Mode** (C:2036) — floor drying program active - **Integrated Auxiliary Heater (Aux 1)** (C:2046) — electric backup heater active - **External Auxiliary Heater (Aux 2)** (C:2047) — external auxiliary heater active ### Heat pump status and operation program - **Heat Pump Status** (H:2045) — multi-value switch: OFF (0), ON (1), EMERGENCY (2) - **Operation Program** (H:2044) — multi-value switch: Winter (0), Summer (1), Combined (2) > [!WARNING] > These are read-only in the current template. To write the heat pump status or operation program, use the write registers H:2700 (status) and H:2701 (program) with **different value mappings**: write 1=OFF, 2=ON, 3=Emergency for status; write 1=Winter, 2=Summer, 3=Combined for program. ### Power monitoring The template monitors instantaneous power output for each service (all /1000 conversion): - **Instantaneous Power** (H:2186) — total heating power - **Heating Power** (H:2187) — heating service power - **DHW Power** (H:2188) — DHW service power - **Total Cooling Power** (H:2190) — total cooling power - **Active Cooling Power** (H:2191) — active cooling service power - **Passive Cooling Power** (H:2192) — passive cooling service power ### Energy metering - **Total Electric Consumption** (H:2193) — total instantaneous electric consumption - **Surplus Electric Consumption** (H:2194) — electric consumption during surplus (photovoltaic) mode ### Compressor diagnostics - **Compressor Starts** (H:2103 + H:2104) — total compressor start count (high × 1000 + low) - **Compressor Operating Hours** (H:2105 + H:2106) — total compressor runtime in hours (high × 1000 + low) ### Pressure monitoring Four pressure sensors are included but require manual readscript configuration after import: - **Primary Circuit Pressure** (H:2083) — source-side water pressure - **Secondary Circuit Pressure** (H:2086) — load-side water pressure - **Compressor Suction Pressure** (H:2093) — refrigerant suction pressure - **Compressor Discharge Pressure** (H:2094) — refrigerant discharge pressure > [!TIP] > The pressure devices are imported as ModbusAnalogInput without readscripts. To enable them, add the following readscript in TapHome service settings: `MODBUSR(H,
, Int16) / 10` where `
` is the register address (e.g. 2083 for primary circuit pressure). The result is in bar. ### Service diagnostics The module exposes eight service attributes for monitoring: - **Heat Pump Time** — formatted timestamp from registers H:2000–H:2004 - **Software Platform** — platform identifier (ESO22, AWD24, WWD24, WWC24) - **Product Range** — product type (HP, PS, EM, SM) - **Software Version** — firmware version string - **Compilation Type Letter** — subversion letter (A–Z) - **Software Version (Build)** — build number - **HP Model / ODU Model** — decoded model code from registers H:2010–H:2015 - **Device Role** — installation role (Stand alone, Block master, Block slave, Supervisor, etc.) ### Additional capabilities The Ecoforest API BUS Client manual documents additional write registers not included in this template, including heat pump ON/OFF control (H:2700), operation program selection (H:2701), service demand management (H:2705–H:2715), setpoint control (H:2720–H:2731), zone ambient terminal control (H:2750–H:2759), alarm management (H:2074), compressor speed limiting (H:2765), and surplus/PV management (H:2775–H:2778). Energy meter registers (H:2200+) provide daily, monthly and annual energy counters. These can be added in a future template update or as custom Modbus devices. ## Troubleshooting ### No Modbus communication 1. **Verify BUS control is enabled:** Installer menu --> Installation --> Remote control --> BUS Control --> Enable must be checked 2. **Check BMS2 port settings:** Protocol must be "MB Extended", baud rate 19200, parity None, 2 stop bits 3. **Verify Slave ID:** Default is **17** for heat pumps — ensure TapHome is configured with the correct address 4. **Check RS-485 cables:** - Tx/Rx+ correctly connected to A+/D+ on TapHome - Tx/Rx- correctly connected to B-/D- on TapHome - **GND connected to TapHome power supply ground** — most common issue 5. Use shielded twisted pair cable, shield connected to earth ### Pressure readings not working The pressure devices (Primary Circuit Pressure, Secondary Circuit Pressure, Compressor Suction/Discharge Pressure) are imported without readscripts. Add the readscript manually in TapHome: 1. Open the device in TapHome service settings 2. Add ReadScript: `MODBUSR(H, , Int16) / 10` 3. Values are in bar (manometric) ### Incorrect temperature readings - Most temperatures use /10 conversion (gain 0.1 per source docs) - The Evaporation Temperature uses /100 in the template — if readings seem incorrect, try changing to /10 - The duplicate Heating Buffer Tank Temperature entry uses /100 instead of /10 — use the primary entry with /10 conversion ### Power readings incorrect The template uses a fixed /1000 conversion for power registers, but the actual conversion depends on the power units register H:2185 (10=W, 20=kW, 30=MW). Verify the power units setting on your heat pump. If the heat pump reports power in W (value 10 at H:2185), the /1000 conversion is correct. For kW (value 20), readings will be 10x too large. ## Available devices Ecoforest HP24 Module Service Attributes | | | |--------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------| | Heat Pump Time | reads H:2000–H:2004 (year/month/day/hour/minute) and formats as \\'YYYY/MM/DD HH:MM\\' timestamp | | Software Platform | reads H:2005 (Int16); maps to platform name: 7=ESO22, 12=AWD24, 13=WWD24, 14=WWC24 | | Product Range | reads H:2006 (Int16); maps to product type: 1=HP, 2=PS, 3=EM, 4=SM | | Software Version | reads H:2007 (Int16); formats as \\'V0XX\\' version string | | Compilation Type Letter | reads H:2008 (Int16); maps 1–26 to A–Z subversion letter | | Software Version (Build) | reads H:2009 (Int16); build number as string | | HP Model / ODU Model | reads H:2010–H:2015 (6 × Int16); decodes model code digits to character string | | Device Role | reads H:2026 (Int16); 0=None, 1=Individual master/Stand alone, 2=ecoGEO block master, 3=Block slave, 4=Supervisor, 5=Individual slave, 6=ecoAIR block master | Active Cooling Mode Reed Contact Read-only Active cooling production status — ON when compressor cooling is running Register: H:2032 Bool Active Cooling Power Variable Read-only Instantaneous active cooling service power output Register: H:2191 Int16 Unit: kW numeric Anti-Freeze Mode Reed Contact Read-only Anti-freeze protection status — ON when freeze protection is active Register: C:2035 Bool Buffer Cooling Setpoint Temperature Sensor Read-only Current cooling buffer tank target temperature Register: H:2153 Int16 Unit: °C numeric Buffer Heating Setpoint Temperature Sensor Read-only Current heating buffer tank target temperature Register: H:2152 Int16 Unit: °C numeric Compressor Discharge Pressure Analog Input Read-only Refrigerant discharge pressure — requires manual readscript configuration Register: H:2094 Int16 Unit: bar numeric Compressor Discharge Temperature Temperature Sensor Read-only Compressor discharge / scroll temperature Register: H:2095 Int16 Unit: °C numeric Compressor Operating Hours Variable Read-only Total compressor runtime in hours (two-register composite value) Register: H:2105+H:2106 Int16 Unit: hours numeric Compressor Starts Variable Read-only Total compressor start count (two-register composite value) Register: H:2103+H:2104 Int16 Unit: count numeric Compressor Suction Pressure Analog Input Read-only Refrigerant suction pressure — requires manual readscript configuration Register: H:2093 Int16 Unit: bar numeric Compressor Suction Temperature Temperature Sensor Read-only Refrigerant suction line temperature Register: H:2092 Int16 Unit: °C numeric Condensing Temperature Temperature Sensor Read-only Refrigerant condensing temperature Register: H:2099 Int16 Unit: °C numeric Cooling Buffer Tank Temperature Temperature Sensor Read-only Cooling buffer tank water temperature Register: H:2133 Int16 Unit: °C numeric Cooling Buffer Tank Temperature (duplicate) Temperature Sensor Read-only Duplicate of Cooling Buffer Tank Temperature — same register H:2133 Register: H:2133 Int16 Unit: °C numeric DHW Production Mode Reed Contact Read-only Domestic hot water production status — ON when DHW is being heated Register: H:2030 Bool DHW Recirculation Temperature Temperature Sensor Read-only Domestic hot water recirculation loop temperature Register: H:2131 Int16 Unit: °C numeric DHW Power Variable Read-only Instantaneous DHW service power output Register: H:2188 Int16 Unit: kW numeric DHW Setpoint Temperature Sensor Read-only Current domestic hot water target temperature Register: H:2150 Int16 Unit: °C numeric DHW Tank Temperature Temperature Sensor Read-only Domestic hot water tank temperature Register: H:2130 Int16 Unit: °C numeric Dry Floor Mode Reed Contact Read-only Floor drying program status — ON when floor drying is active Register: C:2036 Bool Surplus Electric Consumption Electricity Meter Read-only Electric consumption during surplus (photovoltaic) mode Register: H:2194 Int16 Unit: kW numeric Evaporation Temperature Temperature Sensor Read-only Refrigerant evaporation temperature Register: H:2098 Int16 Unit: °C numeric External Auxiliary Heater (Aux 2) Reed Contact Read-only Generic external auxiliary heater status Register: C:2047 Bool Group 1 Cooling Setpoint Temperature Sensor Read-only Final cooling setpoint for zone group 1 Register: H:2156 Int16 Unit: °C numeric Group 1 Heating Setpoint Temperature Sensor Read-only Final heating setpoint for zone group 1 Register: H:2155 Int16 Unit: °C numeric Heat Pump Status Multi-value Switch Read-only Heat pump operating state — OFF, ON, or EMERGENCY Register: H:2045 Int16 multi-value Values / States: OFF · ON · EMERGENCY Heating Buffer Tank Temperature Temperature Sensor Read-only Heating buffer tank water temperature Register: H:2132 Int16 Unit: °C numeric Heating Buffer Tank Temperature (duplicate) Temperature Sensor Read-only Duplicate with incorrect /100 conversion — use primary entry instead Register: H:2132 Int16 Unit: °C numeric Heating Production Mode Reed Contact Read-only Heating production status — ON when heating is running Register: H:2031 Bool Heating Power Variable Read-only Instantaneous heating service power output Register: H:2187 Int16 Unit: kW numeric HTR Setpoint Temperature Sensor Read-only High Temperature Radiator circuit target temperature Register: H:2154 Int16 Unit: °C numeric Instantaneous Power Variable Read-only Total instantaneous heating power output Register: H:2186 Int16 Unit: kW numeric Integrated Auxiliary Heater (Aux 1) Reed Contact Read-only Integrated electric backup heater status Register: C:2046 Bool Inverter Temperature Temperature Sensor Read-only Compressor inverter electronics temperature Register: H:2097 Int16 Unit: °C numeric Operation Program Multi-value Switch Read-only Heat pump operation program — Winter, Summer, or Combined Register: H:2044 Int16 multi-value Values / States: Winter · Summer · Combined Outdoor Temperature Temperature Sensor Read-only Ambient outdoor temperature with freeze/overheat security alerts Register: H:2080 Int16 Unit: °C numeric Passive Cooling Mode Reed Contact Read-only Passive (free) cooling production status — cooling without compressor Register: H:2033 Bool Passive Cooling Power Variable Read-only Instantaneous passive cooling service power output Register: H:2192 Int16 Unit: kW numeric Pool Production Mode Reed Contact Read-only Pool heating production status — ON when pool is being heated Register: H:2034 Bool Dashboard Variable Variable Read-only Ecoforest dashboard device variable — firmware-specific diagnostic value Register: H:6148 Int16 numeric Primary Circuit Inlet Temperature Temperature Sensor Read-only Source-side circuit water inlet temperature Register: H:2082 Int16 Unit: °C numeric Primary Circuit Outlet Temperature Temperature Sensor Read-only Source-side circuit water outlet temperature Register: A:2081 Int16 Unit: °C numeric Primary Circuit Pressure Analog Input Read-only Source-side circuit water pressure — requires manual readscript configuration Register: H:2083 Int16 Unit: bar numeric Secondary Circuit Inlet Temperature Temperature Sensor Read-only Load-side circuit water inlet temperature Register: H:2085 Int16 Unit: °C numeric Secondary Circuit Outlet Temperature Temperature Sensor Read-only Load-side circuit water outlet temperature Register: H:2084 Int16 Unit: °C numeric Secondary Circuit Pressure Analog Input Read-only Load-side circuit water pressure — requires manual readscript configuration Register: H:2086 Int16 Unit: bar numeric Superheat Temperature Sensor Read-only Refrigerant superheat (suction temperature minus evaporation temperature) Register: H:2096 Int16 Unit: °C numeric Total Cooling Power Variable Read-only Total instantaneous cooling power output Register: H:2190 Int16 Unit: kW numeric Total Electric Consumption Electricity Meter Read-only Total instantaneous electric consumption Register: H:2193 Int16 numeric DHW Tank Temperature (Slovak duplicate) Temperature Sensor Read-only Duplicate of DHW Tank Temperature with Slovak name — same register H:2130 Register: H:2130 Int16 Unit: °C numeric **Connection:** Modbus RTU • 19200 baud• 8N2 • Slave ID: $\[SlaveId] Possible improvements (17) - H:2700 Heat Pump Status (Write) — Write HP status: 1=OFF, 2=ON, 3=Emergency. Template reads status (H:2045) but has no write — critical ON/OFF control missing - H:2701 Operation Program (Write) — Write operation program: 1=Winter, 2=Summer, 3=Combined. Template reads program (H:2044) but has no write - H:2705 DHW BUS Control — Enable/disable DHW setpoint control by BUS: 0=No BUS, 1=Setpoint/Offset by BUS - H:2720 DHW Setpoint (Write) — Write DHW setpoint 10.0–82.0°C (gain 0.1). Requires DHW BUS control (H:2705) enabled first - H:2722 Buffer Heating Setpoint (Write) — Write buffer heating setpoint (gain 0.1). Requires heating buffer BUS control (H:2713) enabled - H:2723 Buffer Cooling Setpoint (Write) — Write buffer cooling setpoint (gain 0.1). Requires cooling buffer BUS control (H:2714) enabled - H:2708 Group 1 Demand — Zone 1 heating/cooling demand with setpoint mode: 0=No demand, 1=Heat+setpoint, 2=Cool+setpoint, 11=Heat from HP, 12=Cool from HP - H:2730 Group 1 Heating Setpoint (Write) — Write group 1 heating setpoint (gain 0.1) - H:2750 Zone 1 BUS Terminal ON/OFF — Enable/disable zone 1 terminal: 0=OFF, 1=ON. Zones 1–5 available (H:2750–H:2754) - H:2755 Zone 1 Ambient Temperature Setpoint — Write zone 1 ambient setpoint 5.0–35.0°C (gain 0.1). Zones 1–5 available (H:2755–H:2759) - H:2065 Alarm Level — 0=No alarm, 1=Active, 2=Active+recurrence, 3=Recurrent, 4=Long time, 5=Lock-down - H:2066 Lock Alarm Code — Alarm code causing lockdown. Together with H:2067–H:2073 provides full alarm diagnostics - H:2074 Reset Alarm by BUS — Write 1 to reset recurrence alarm. WARNING: resetting without fixing cause can damage equipment - H:2185 Instantaneous Power Units — 10=W, 20=kW, 30=MW — determines units for power registers H:2186–H:2194. Template hardcodes /1000 without reading this - H:2200 Current Day Energy Units — 10=Wh, 20=kWh, 30=MWh — followed by daily energy counters H:2201–H:2211 for DHW, heating, pool, cooling, consumption - H:2775 Surplus Control by BUS — Enable/disable e-Manager surplus control: 0=OFF, 1=ON. For PV surplus management - H:2765 Maximum Compressor Reference — Write max compressor reference 0–100.0% (gain 0.1) — limits compressor speed ## Sources - Ecoforest Modbus Variables List HP24 V01.00 2026-03-20 [PDF](https://taphome.com/compatibility/devices/ecoforest-hp24/manufacturer/modbus-variables-list.pdf) - Ecoforest APIs BUS CLIENT MANUAL V03 (HP24\_V01.02) 2026-03-20 [PDF](https://taphome.com/compatibility/devices/ecoforest-hp24/manufacturer/manual-api-bus-client.pdf) - EcoForest Modbus Registers — GitHub Community (ESPHome) [github.com](https://github.com/bp-ouhaha/EcoForest-modbus-registers) 2026-03-20 ## Related Documentation - [Modbus Integration](https://taphome.com/en/compatibility/modbus-guide/) - [Modbus](https://taphome.com/en/docs/integration/modbus/) - [Simple configuration using templates](https://taphome.com/en/docs/integration/modbus/templates/) - [Modbus scripts and prefetch](https://taphome.com/en/docs/script/modbus-scripts/) - [Modbus functions](https://taphome.com/en/docs/script/modbus/) - [Modbus data types](https://taphome.com/en/docs/script/modbus-data-types/)