---
title: "Wolf CWL-2 (UWA2-B)"
description: "Wolf CWL-2 over Modbus RTU on X15: ventilation mode or air flow, bypass, filter status, temperatures and humidity in TapHome. Base board UWA2-B only."
url: "https://taphome.com/en/compatibility/device-1789630361606/"
language: en
lastmod: 2026-11-10
generator: hugo
ai:
  topics: ["modbus-rtu","rs485","air-recovery","ventilation","heat-recovery","bypass","filter-monitoring"]
  questions: ["How to integrate the Wolf CWL-2 ventilation unit with TapHome?","What does the Wolf CWL-2 (UWA2-B) TapHome template control and monitor?","How to connect the Wolf CWL-2 to TapHome via Modbus RTU on connector X15?","Which Modbus settings (steps 14.1 to 14.4) does the Wolf CWL-2 need for TapHome?","Why does the Wolf CWL-2 ignore Modbus commands after a power failure?","Which jumpers have to be removed on the UWA2-B board for Modbus?","Does the TapHome template work with the Wolf CWL-2 Plus version with the UWA2-E board?","Can TapHome control the bypass and reset the filter warning of a Wolf CWL-2?"]
---

# Wolf CWL-2 (UWA2-B)

Communication: Modbus RTU

## Integration guide

The Wolf CWL-2 is a comfort ventilation unit with heat recovery for dwellings (for example the CWL-2-400 with a maximum capacity of 400 m³/h). Its base control board **UWA2-B** has its own Modbus connector **X15** and communicates over **Modbus RTU on RS-485**. The template connects TapHome directly to this connector — no gateway is needed — and covers remote control of ventilation (mode presets or a direct air flow), the unit status, temperatures and humidity, the bypass, the external heater, filter management, the flow settings and diagnostics.

The device names in the template are in Slovak. Where a device is named below, its English description is followed by the exact template name in quotation marks, for example *Modbus control* ("Riadenie Modbus").

## What the template covers

The template is written for the **standard unit with only the base board UWA2-B**, connected on X15.

- **Plus version (Plus board UWA2-E):** when the unit is supplied as a Plus version, Wolf specifies that the Modbus connection is made on connector **X06 of the UWA2-E** instead, and X15 of the base board is then used to connect the Plus board. The inputs, outputs and the geo heat exchanger of the Plus board are not part of the template.
- **Cascade:** when several Wolf units are cascaded, the Modbus connection must go to the master unit with a Plus board — this setup is not covered either.
- **CO2 sensors:** the optional eBus CO2 sensors (up to four) and their settings are not read by the template.
- **Modbus settings:** the bus type, slave address and baud rate are set on the unit's touchscreen (steps 14.1–14.4, see below), not from TapHome.

## Hardware connection

> [!WARNING]
> Before working on the unit, always disconnect it from the mains by pulling the power plug.

### Modbus connector X15

![Wolf CWL-2 Modbus connection: X15 on base board UWA2-B, or X06 on Plus board UWA2-E, to a Modbus RS485 network](https://taphome.com/images/compatibility/device-1789630361606/wiring-modbus-x15_hu_feb67e572b88b062.jpg)

X15 is the red 3-pole connector on the base board UWA2-B. It carries **RS-485 A**, **RS-485 B** and **RS-485 ground** (connection A in the figure above).

1. Disconnect the unit from the mains.
2. Connect RS-485 A and RS-485 B of X15 to A and B of the TapHome RS-485 bus, and RS-485 ground to the bus ground (GND).
3. Set the terminating resistor and the jumpers on the UWA2-B as described below.
4. Connect the unit to the mains again.

### Terminating resistor and jumpers

![Wolf CWL-2 electrical diagram of base board UWA2-B and Plus board UWA2-E with X15 Modbus connector and X12 terminating resistor jumper](https://taphome.com/images/compatibility/device-1789630361606/wiring-electrical-diagram_hu_9fa4b4fdafa0b876.jpg)

- **X12** is the jumper of the 120 Ω Modbus terminating resistor. Remove it when the bus is already terminated elsewhere — that is, when the CWL-2 is not at the end of the RS-485 line.
- For a Modbus application, the electrical diagram also says to **remove the jumpers X121 and X122** on the UWA2-B. All three jumpers X12, X121 and X122 are placed only when the connector is used for the Wolf external bus or for a Plus board.

## Configuration on the unit

### Modbus settings (steps 14.1–14.4)

![Wolf CWL-2 settings table with Modbus steps 14.1 to 14.4: bus type, slave address, baud rate, parity](https://taphome.com/images/compatibility/device-1789630361606/settings-modbus_hu_8ead301680efc4db.jpg)

The Modbus settings are in the settings menu of the unit's touchscreen (the settings icon on the main screen), group **14 Communication**:

| Step | Setting | Factory setting | Range |
|------|---------|-----------------|-------|
| 14.1 | Type of bus connection | ModBus | Off / ModBus / external Bus |
| 14.2 | Slave address | 20 | 1–247 |
| 14.3 | Baud rate | 19k2 | 1200 / 2400 / 4800 / 9600 / 19k2 / 38k4 / 56k / 115k2 |
| 14.4 | Parity | Even | No / Even / Odd |

At factory settings the unit is already a Modbus slave with address 20. Check that 14.1 is set to **ModBus**, and give the unit a unique address when other Modbus devices share the bus.

The template uses the factory communication parameters:

| Parameter | Value |
|-----------|-------|
| Baud rate | 19200 |
| Parity | Even |
| Data bits | 8 |
| Stop bits | 1 |
| Slave ID | 20 (import parameter *Modbus Slave ID*) |

In TapHome, the template is imported on a Modbus RTU interface on this RS-485 bus, with the Slave ID set to the address from step 14.2.

### Enabling remote control

After the import, the unit only accepts ventilation commands when *Modbus control* ("Riadenie Modbus", register 8000) is switched on:

- **Switch** ("Prepínač") — the ventilation mode is selected with *Requested mode* ("Požadovaný režim"): Holiday, Low, Normal or High.
- **Flow** ("Prietok") — the air flow is set directly in m³/h with *Requested flow* ("Požadovaný prietok").
- **Off** ("Vypnuté") — remote control is off (default).

> [!WARNING]
> After the unit has been disconnected from the mains, the remote control registers 8000–8011 and the requested air flow must be set again — *Modbus control* returns to Off.

> [!NOTE]
> While Modbus is active, the ventilation mode can no longer be changed on the unit's display or with a connected multiple switch, and a connected humidity sensor does not work.

## Device capabilities

### Ventilation control

- *Modbus control* ("Riadenie Modbus") — Off, Switch or Flow (see above).
- *Requested mode* ("Požadovaný režim") — Holiday, Low, Normal or High; effective when Modbus control is set to Switch. The device also has the service action *Reset device* ("Reset zariadenia"), which sends an appliance reset to the unit.
- *Requested flow* ("Požadovaný prietok") — air flow in m³/h, between the minimum and maximum flow of the unit type; effective when Modbus control is set to Flow.
- *Standby* ("Pohotovostný režim") — puts the unit into standby or back into normal mode. The value read back is the actual standby state, which can also be changed from other interfaces of the unit.

### Unit status

- *Active function* ("Aktívna funkcia") — the function the unit is running, read only. The template names Standby, Manual, Holiday, Night ventilation, Party and Bypass boost; the unit can also report other functions (for example errors, Auto CO2 or Auto Modbus) that the template does not name.
- *Current ventilation mode* ("Aktuálny režim vetrania") — Holiday, Low, Normal, High or Automatic, read only. Service attributes: the fan control type and the position of a connected flow switch.
- *Supply air pressure* and *Exhaust air pressure* ("Tlak privádzaného vzduchu", "Tlak odvádzaného vzduchu") — duct pressures in Pa.

### Temperature and humidity

- *Supply air – temperature and humidity* ("Privádzaný vzduch – teplota a vlhkosť") and *Exhaust air – temperature and humidity* ("Odvádzaný vzduch – teplota a vlhkosť") — the sensors at the supply and exhaust fan. Each has service attributes with the fan status, the set and actual flow (m³/h), the mass flow (kg/h), the fan speed and the anemometer speed (RPM).
- *NTC1 temperature* and *NTC2 temperature* ("Teplota NTC1", "Teplota NTC2") — the two NTC sensors of the unit.
- *Relative humidity (RHT)* ("Relatívna vlhkosť (RHT)") — the value of the RHT humidity sensor in %.

### Bypass

*Bypass – mode* ("Bypass – režim") switches the 100 % bypass between **Automatic**, **Closed** and **Open**. Its service attributes show the bypass state (initializing, opening, closing, open, closed), the step position of the valve, the two opening temperatures and the hysteresis. Service actions set:

| Service action | Range |
|----------------|-------|
| Opening temperature, indoor air ("Nastaviť teplotu otvárania (interiér)") | 15.0–35.0 °C |
| Opening temperature, outdoor air ("Nastaviť teplotu otvárania (vonkajšia)") | 7.0–15.0 °C |
| Bypass hysteresis ("Nastaviť hysterézu bypasu") | 0.0–5.0 °C |

In automatic mode the bypass opens when the outdoor air is warmer than the outdoor threshold, cooler than the air from the dwelling, and the air from the dwelling is warmer than the indoor threshold. It closes when the outdoor air drops below the outdoor threshold, becomes warmer than the indoor air, or the indoor air drops below the indoor threshold minus the hysteresis.

*Bypass boost* switches the bypass boost function on or off: with the bypass open, the unit runs at the flow preset shown in the service attribute *Flow preset at boost* (factory setting High).

### External heater and frost protection

*External heater* ("Vonkajší ohrievač") sets the mode of an external heater: Not available, Pre-heater or Post-heater. Its service attribute shows the post-heater set temperature.

Frost protection is read through service attributes of the module: preheater status and capacity, frost heater power, fan reduction during frost protection, the frost control temperature and the minimum supply temperature during frost protection. The template only reads these two temperatures; they are set on the unit's display (steps 3.1 and 3.2).

### Filter

- *Filter – status* ("Filter – stav") — **Clean** or **Dirty**. Service attributes: operating hours, days since the last filter change, flow since the filter change and total flow since commissioning. The service action *Reset filter warning* ("Resetovať upozornenie filtra") confirms the filter change.
- *Filter change interval* ("Interval výmeny filtra") — days until the filter message, 1–365 (factory setting 90).

### Flow settings

- *Flow preset – Holiday*, *– Low*, *– Normal* and *– High* ("Predvoľba prietoku – Prázdniny / Nízky / Normálny / Vysoký") — air flow of the four ventilation modes in m³/h. The limits depend on the unit type, and each preset must stay between the neighbouring ones (Holiday ≤ Low ≤ Normal ≤ High).
- *Flow control type* ("Typ riadenia prietoku") — Constant PWM, Constant flow (factory setting) or Constant mass flow.
- *Fan imbalance* ("Nevyváženosť ventilátorov") — allows or forbids imbalance. Service attributes: the imbalance value (supply increased against exhaust, in %) and the supply and exhaust offsets.
- *💨 Total fan power* ("💨 Celkový výkon ventilátora") and *💨 Exhaust – power (%)* ("💨 Odvod – výkon (%)") — write the PWM presets of fan setting 2 (Normal) for the supply and exhaust fan (registers 6014 and 6015). The first device writes both fans at once. According to the Modbus documentation the PWM presets range from 15 to 100 %; they apply when the flow control type is Constant PWM.
- *💨 Supply – speed (RPM)* and *💨 Exhaust – speed (RPM)* ("💨 Prívod – otáčky (RPM)", "💨 Odvod – otáčky (RPM)") — fan speeds.

### Diagnostics

The module has service attributes with the software and hardware version of the base board, the appliance type, the DIP switch value, the serial number (three BCD groups), the current time and date, the eBus power status and the signal output (0 V / 24 V). The time is shown as a raw number: according to the Modbus documentation the high byte holds the hours and the low byte the minutes.

The module raises an error when frost protection reports an error, a warning when the supply or exhaust fan does not communicate, and an error when a fan is blocked or reports a fault.

## Troubleshooting

- **No communication:** check that step 14.1 is set to ModBus, that the slave address (14.2), baud rate (14.3) and parity (14.4) match the import parameter and the interface settings in TapHome, that A and B are not swapped, and that the jumpers X121 and X122 are removed. Remove X12 when the bus is already terminated.
- **The unit ignores commands from TapHome:** *Modbus control* must be set to Switch (for *Requested mode*) or Flow (for *Requested flow*). After a mains failure it is Off again and must be set once more.
- **The mode cannot be changed on the unit's display:** this is expected while Modbus control is active.
- **Fault E123 (sub-code E2400) on the display:** external Modbus fault — operation via Modbus does not work. Wolf advises checking the cabling and the connected accessories.
- **The bypass does not open:** in automatic mode check the opening temperatures and the hysteresis in the service attributes of *Bypass – mode*, and that the outdoor air is cooler than the air from the dwelling.
- **The filter message stays on after a filter change:** run the service action *Reset filter warning* on *Filter – status*, or reset the filter at step 4.3 on the unit.

## Available devices 28

These devices appear in TapHome after import.

Wolf CWL-2 Module

Service Attributes

|                                           |
|-------------------------------------------|
| Verzia SW (typ+major)                     |
| Verzia SW (minor+fix)                     |
| Verzia SW (build)                         |
| Verzia HW                                 |
| Typ zariadenia                            |
| Hodnota DIP prepínača                     |
| Sériové číslo (pozície 0–3)               |
| Sériové číslo (pozície 4–7)               |
| Sériové číslo (pozície 8–11)              |
| Aktuálny čas                              |
| Aktuálny dátum (deň)                      |
| Aktuálny dátum (rok)                      |
| Stav napájania eBus                       |
| Signálny výstup                           |
| Stav predhrievača                         |
| Kapacita predhrievača                     |
| Výkon mrazového ohrievača                 |
| Redukcia ventilátora pri mraze            |
| Teplota spúšťania mrazovej ochrany        |
| Min. teplota prívodu pri mrazovej ochrane |

Read (module)

```taphome
VAR frostStatus := MODBUSR(A, 4070, UInt16);
IF(frostStatus = 15) ADDERROR(0, "Mrazová ochrana: chyba"); END
VAR fanInlet := MODBUSR(A, 4030, UInt16);
IF(fanInlet = 2) ADDWARNING(0, "Prívod: chýba komunikácia s ventilátorom"); END
IF(fanInlet = 3) ADDERROR(1, "Prívod: ventilátor zablokovaný"); END
IF(fanInlet = 4) ADDERROR(2, "Prívod: chyba ventilátora"); END
VAR fanExhaust := MODBUSR(A, 4040, UInt16);
IF(fanExhaust = 2) ADDWARNING(1, "Odvod: chýba komunikácia s ventilátorom"); END
IF(fanExhaust = 3) ADDERROR(3, "Odvod: ventilátor zablokovaný"); END
IF(fanExhaust = 4) ADDERROR(4, "Odvod: chyba ventilátora"); END
```

Service Attributes

Verzia SW (typ+major)

```taphome
TOSTRING(MODBUSR(A, 4000, UInt16))
```

Verzia SW (minor+fix)

```taphome
TOSTRING(MODBUSR(A, 4001, UInt16))
```

Verzia SW (build)

```taphome
TOSTRING(MODBUSR(A, 4002, UInt16))
```

Verzia HW

```taphome
TOSTRING(MODBUSR(A, 4003, UInt16))
```

Typ zariadenia

```taphome
TOSTRING(MODBUSR(A, 4004, UInt16))
```

Hodnota DIP prepínača

```taphome
TOSTRING(MODBUSR(A, 4005, UInt16))
```

Sériové číslo (pozície 0–3)

```taphome
TOSTRING(FROMBCD(MODBUSR(A, 4010, UInt16)))
```

Sériové číslo (pozície 4–7)

```taphome
TOSTRING(FROMBCD(MODBUSR(A, 4011, UInt16)))
```

Sériové číslo (pozície 8–11)

```taphome
TOSTRING(FROMBCD(MODBUSR(A, 4012, UInt16)))
```

Aktuálny čas

```taphome
TOSTRING(MODBUSR(A, 4110, UInt16))
```

Aktuálny dátum (deň)

```taphome
TOSTRING(MODBUSR(A, 4111, UInt16))
```

Aktuálny dátum (rok)

```taphome
TOSTRING(MODBUSR(A, 4112, UInt16))
```

Stav napájania eBus

```taphome
SWITCH(MODBUSR(A, 4101, UInt16), 0, "Spúšťanie", 1, "Inicializácia napájania", 2, "Vypnuté", 3, "Zapnuté", 4, "Čakanie na vypnutie", 5, "Podriadený vypnutý", "Neznámy")
```

Signálny výstup

```taphome
IF(MODBUSR(A, 4090, UInt16) = 0, "0 V", "24 V")
```

Stav predhrievača

```taphome
SWITCH(MODBUSR(A, 4060, UInt16), 0, "Inicializácia", 1, "Neaktívny", 2, "Aktívny", 3, "Testovací režim", "Neznámy")
```

Kapacita predhrievača

```taphome
TOSTRING(MODBUSR(A, 4061, UInt16)) + " %"
```

Výkon mrazového ohrievača

```taphome
TOSTRING(MODBUSR(A, 4071, UInt16)) + " %"
```

Redukcia ventilátora pri mraze

```taphome
TOSTRING(MODBUSR(A, 4072, UInt16)) + " %"
```

Teplota spúšťania mrazovej ochrany

```taphome
TOSTRING(MODBUSR(H, 6110, Int16) / 10) + " °C"
```

Min. teplota prívodu pri mrazovej ochrane

```taphome
TOSTRING(MODBUSR(H, 6111, Int16) / 10) + " °C"
```

Riadenie Modbus Multi-value Switch

Values / States: Vypnuté · Prepínač · Prietok

Read switch state

```taphome
MODBUSR(H, 8000, UInt16)
```

Write switch state

```taphome
MODBUSW(SH, 8000, UInt16, Mu)
```

Požadovaný režim Multi-value Switch

Values / States: Prázdniny · Nízky · Normálny · Vysoký

Service Actions

|                  |
|------------------|
| Reset zariadenia |

Read switch state

```taphome
MODBUSR(H, 8001, UInt16)
```

Write switch state

```taphome
MODBUSW(SH, 8001, UInt16, Mu)
```

Service Actions

Reset zariadenia

```taphome
MODBUSW(SH, 8011, UInt16, 1)
```

Požadovaný prietok Variable

Read

```taphome
MODBUSR(H, 8002, UInt16)
```

Write

```taphome
MODBUSW(SH, 8002, UInt16, Va)
```

Pohotovostný režim Multi-value Switch

Values / States: Bez akcie · Nastaviť pohotovosť · Nastaviť normálny režim

Read switch state

```taphome
MODBUSR(H, 8003, UInt16)
```

Write switch state

```taphome
MODBUSW(SH, 8003, UInt16, Mu)
```

Aktívna funkcia Multi-value Switch

Values / States: Pohotovosť · Manuálny · Prázdniny · Nočné vetranie · Párty · Boost bypasu

Read switch state

```taphome
MODBUSR(A, 4020, UInt16)
```

Aktuálny režim vetrania Multi-value Switch

Values / States: Prázdniny · Nízky · Normálny · Vysoký · Automatický

Read switch state

```taphome
MODBUSR(A, 4022, UInt16)
```

Service Attributes

Typ riadenia ventilátora

```taphome
SWITCH(MODBUSR(A, 4021, UInt16), 0, "Inicializácia", 1, "Konštantný prietok", 2, "Konštantný PWM", 3, "Vypnutý", 4, "Chyba", 5, "Hmotnostná bilancia", 6, "Pohotovosť", "Neznámy")
```

Poloha prepínača prietoku

```taphome
SWITCH(MODBUSR(A, 4080, UInt16), 0, "Prázdniny", 1, "Nízky", 2, "Normálny", 3, "Vysoký", 255, "Neplatná pozícia", "Neznámy")
```

Tlak privádzaného vzduchu Variable

Read

```taphome
MODBUSR(A, 4023, Int16) / 10
```

Tlak odvádzaného vzduchu Variable

Read

```taphome
MODBUSR(A, 4024, Int16) / 10
```

Privádzaný vzduch – teplota a vlhkosť Temperature Sensor

Service Attributes

|                            |
|----------------------------|
| Stav ventilátora prívodu   |
| Požadovaný prietok prívodu |
| Aktuálny prietok prívodu   |
| Hmotnostný prietok prívodu |
| Otáčky ventilátora prívodu |
| Otáčky anemometra prívodu  |

Read humidity

```taphome
MODBUSR(A, 4037, UInt16) / 10
```

Read temperature

```taphome
MODBUSR(A, 4036, Int16) / 10
```

Service Attributes

Stav ventilátora prívodu

```taphome
SWITCH(MODBUSR(A, 4030, UInt16), 0, "Nečinný", 1, "Beží", 2, "Bez komunikácie", 3, "Zablokovaný", 4, "Chyba", "Neznámy")
```

Požadovaný prietok prívodu

```taphome
TOSTRING(MODBUSR(A, 4031, UInt16)) + " m³/h"
```

Aktuálny prietok prívodu

```taphome
TOSTRING(MODBUSR(A, 4032, UInt16)) + " m³/h"
```

Hmotnostný prietok prívodu

```taphome
TOSTRING(MODBUSR(A, 4033, UInt16)) + " kg/h"
```

Otáčky ventilátora prívodu

```taphome
TOSTRING(MODBUSR(A, 4034, UInt16)) + " RPM"
```

Otáčky anemometra prívodu

```taphome
TOSTRING(MODBUSR(A, 4035, UInt16)) + " RPM"
```

Odvádzaný vzduch – teplota a vlhkosť Temperature Sensor

Service Attributes

|                           |
|---------------------------|
| Stav ventilátora odvodu   |
| Požadovaný prietok odvodu |
| Aktuálny prietok odvodu   |
| Hmotnostný prietok odvodu |
| Otáčky ventilátora odvodu |
| Otáčky anemometra odvodu  |

Read humidity

```taphome
MODBUSR(A, 4047, UInt16) / 10
```

Read temperature

```taphome
MODBUSR(A, 4046, Int16) / 10
```

Service Attributes

Stav ventilátora odvodu

```taphome
SWITCH(MODBUSR(A, 4040, UInt16), 0, "Nečinný", 1, "Beží", 2, "Bez komunikácie", 3, "Zablokovaný", 4, "Chyba", "Neznámy")
```

Požadovaný prietok odvodu

```taphome
TOSTRING(MODBUSR(A, 4041, UInt16)) + " m³/h"
```

Aktuálny prietok odvodu

```taphome
TOSTRING(MODBUSR(A, 4042, UInt16)) + " m³/h"
```

Hmotnostný prietok odvodu

```taphome
TOSTRING(MODBUSR(A, 4043, UInt16)) + " kg/h"
```

Otáčky ventilátora odvodu

```taphome
TOSTRING(MODBUSR(A, 4044, UInt16)) + " RPM"
```

Otáčky anemometra odvodu

```taphome
TOSTRING(MODBUSR(A, 4045, UInt16)) + " RPM"
```

Teplota NTC1 Temperature Sensor

Read temperature

```taphome
MODBUSR(A, 4081, Int16) / 10
```

Teplota NTC2 Temperature Sensor

Read temperature

```taphome
MODBUSR(A, 4082, Int16) / 10
```

Relatívna vlhkosť (RHT) Variable

Read

```taphome
MODBUSR(A, 4083, UInt16) / 10
```

Bypass – režim Multi-value Switch

Values / States: Automatický · Zatvorený · Otvorený

Service Actions

|                                        |
|----------------------------------------|
| Nastaviť teplotu otvárania (interiér)  |
| Nastaviť teplotu otvárania (vonkajšia) |
| Nastaviť hysterézu bypasu              |

Read switch state

```taphome
MODBUSR(H, 6100, UInt16)
```

Write switch state

```taphome
MODBUSW(SH, 6100, UInt16, Mu)
```

Service Attributes

Stav bypasu

```taphome
SWITCH(MODBUSR(A, 4050, UInt16), 0, "Inicializácia", 1, "Otvárajúci sa", 2, "Zatváranie", 3, "Otvorený", 4, "Zatvorený", "Neznámy")
```

Poloha krokov bypasu

```taphome
TOSTRING(MODBUSR(A, 4051, UInt16))
```

Teplota otvárania (interiér)

```taphome
TOSTRING(MODBUSR(H, 6101, Int16) / 10) + " °C"
```

Teplota otvárania (vonkajšia)

```taphome
TOSTRING(MODBUSR(H, 6102, Int16) / 10) + " °C"
```

Hysteréza teploty bypasu

```taphome
TOSTRING(MODBUSR(H, 6103, Int16) / 10) + " °C"
```

Service Actions

Nastaviť teplotu otvárania (interiér)

Parameters: Teplota (15–35 T)

```taphome
MODBUSWNE(SH, 6101, Int16, T * 10)
```

Nastaviť teplotu otvárania (vonkajšia)

Parameters: Teplota (7–15 T)

```taphome
MODBUSWNE(SH, 6102, Int16, T * 10)
```

Nastaviť hysterézu bypasu

Parameters: Hysteréza (0–5 H)

```taphome
MODBUSWNE(SH, 6103, Int16, H * 10)
```

Bypass boost Switch

Values / States: ON · OFF

Read switch state

```taphome
MODBUSR(H, 6104, UInt16)
```

Write switch state

```taphome
MODBUSW(SH, 6104, UInt16, St)
```

Service Attributes

Predvoľba prietoku pri boost

```taphome
SWITCH(MODBUSR(H, 6105, UInt16), 0, "Prázdniny", 1, "Nízky", 2, "Normálny", 3, "Vysoký", "Neznámy")
```

Vonkajší ohrievač Multi-value Switch

Values / States: Nedostupný · Predhrievač · Postohrievač

Read switch state

```taphome
MODBUSR(H, 6130, UInt16)
```

Write switch state

```taphome
MODBUSW(SH, 6130, UInt16, Mu)
```

Service Attributes

Žiadaná teplota postohrievača

```taphome
TOSTRING(MODBUSR(H, 6131, Int16) / 10) + " °C"
```

Filter – stav Reed Contact

Service Attributes

|                                |
|--------------------------------|
| Prevádzkové hodiny             |
| Dni od poslednej výmeny filtra |
| Prietok od výmeny filtra       |
| Celkový prietok                |

Service Actions

|                              |
|------------------------------|
| Resetovať upozornenie filtra |

Read

```taphome
MODBUSR(A, 4100, UInt16)
```

Service Attributes

Prevádzkové hodiny

```taphome
TOSTRING(MODBUSR(A, 4113, UInt32)) + " h"
```

Dni od poslednej výmeny filtra

```taphome
TOSTRING(MODBUSR(A, 4115, UInt16)) + " dní"
```

Prietok od výmeny filtra

```taphome
TOSTRING(MODBUSR(A, 4116, UInt32)) + " m³/h"
```

Celkový prietok

```taphome
TOSTRING(MODBUSR(A, 4118, UInt32)) + " m³/h"
```

Service Actions

Resetovať upozornenie filtra

```taphome
MODBUSW(SH, 8010, UInt16, 1)
```

Interval výmeny filtra Variable

Read

```taphome
MODBUSR(H, 6120, UInt16)
```

Write

```taphome
MODBUSWNE(SH, 6120, UInt16, Va)
```

Predvoľba prietoku – Prázdniny Variable

Read

```taphome
MODBUSR(H, 6000, UInt16)
```

Write

```taphome
MODBUSWNE(SH, 6000, UInt16, Va)
```

Predvoľba prietoku – Nízky Variable

Read

```taphome
MODBUSR(H, 6001, UInt16)
```

Write

```taphome
MODBUSWNE(SH, 6001, UInt16, Va)
```

Predvoľba prietoku – Normálny Variable

Read

```taphome
MODBUSR(H, 6002, UInt16)
```

Write

```taphome
MODBUSWNE(SH, 6002, UInt16, Va)
```

Predvoľba prietoku – Vysoký Variable

Read

```taphome
MODBUSR(H, 6003, UInt16)
```

Write

```taphome
MODBUSWNE(SH, 6003, UInt16, Va)
```

Typ riadenia prietoku Multi-value Switch

Values / States: Konštantný PWM · Konštantný prietok · Konštantná hmotnosť

Read switch state

```taphome
MODBUSR(H, 6030, UInt16)
```

Write switch state

```taphome
MODBUSW(SH, 6030, UInt16, Mu)
```

Nevyváženosť ventilátorov Switch

Values / States: Povolená · Zakázaná

Read switch state

```taphome
MODBUSR(H, 6033, UInt16)
```

Write switch state

```taphome
MODBUSW(SH, 6033, UInt16, St)
```

Service Attributes

Hodnota nevyváženosti

```taphome
TOSTRING(MODBUSR(H, 6034, UInt16)) + " %"
```

Offset prívodu

```taphome
TOSTRING(MODBUSR(H, 6035, Int16)) + " %"
```

Offset odvodu

```taphome
TOSTRING(MODBUSR(H, 6036, Int16)) + " %"
```

💨 Celkový výkon ventilátora Variable

Read

```taphome
MODBUSR(H, 6014, UInt16)
```

Write

```taphome
MODBUSW(SH, 6014, UInt16, Va); MODBUSW(SH, 6015, UInt16, Va)
```

💨 Odvod – výkon (%) Variable

Read

```taphome
MODBUSR(H, 6015, UInt16)
```

Write

```taphome
MODBUSW(SH, 6015, UInt16, Va)
```

💨 Prívod – otáčky (RPM) Variable

Read

```taphome
MODBUSR(A, 4034, UInt16)
```

💨 Odvod – otáčky (RPM) Variable

Read

```taphome
MODBUSR(A, 4044, UInt16)
```

**Connection:** Modbus RTU • 19200 baud• 8E1 • Slave ID: $\[SlaveId]

## Import parameters

Enter these values when you import the XML.

| Asked in the app | Default |
|------------------|---------|
| Modbus Slave ID  | `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/)