134 lines
5.1 KiB
Markdown
134 lines
5.1 KiB
Markdown
# RDZ HMI Control for Home Assistant
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A custom Home Assistant integration for controlling RDZ Graphic Tablet (HMI) thermostats via Modbus TCP. This allows you to remotely monitor and control your RDZ HVAC system directly from Home Assistant.
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## Features
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- Control up to 64 thermostat zones
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- Support for both heating (winter) and cooling (summer) modes
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- Global season switch to toggle between heating and cooling
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- Automatic setpoint synchronization between real and virtual thermostats
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- Real-time temperature monitoring
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## Prerequisites
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- RDZ Graphic Tablet (HMI) connected to your network
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- Home Assistant installation
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- Network access from Home Assistant to the RDZ tablet on port 8000
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- **Important**: All thermostats must be set to **manual mode** on the physical devices
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## Installation
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### Manual Installation
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1. Download the `custom_components/rdz_hmi_control` folder from this repository
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2. Copy it to your Home Assistant `config/custom_components/` directory
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3. Restart Home Assistant
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## Setup
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Setting up the integration requires identifying and mapping each discovered zone to your physical thermostats. Follow these steps carefully.
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### Step 1: Add the Integration
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1. Go to **Settings** > **Devices & Services** > **Add Integration**
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2. Search for "RDZ HMI Control"
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3. Enter the IP address of your RDZ Graphic Tablet
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4. Enter port `8000` (default Modbus TCP port for RDZ)
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5. Click **Submit**
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The integration will discover all active zones from your RDZ system.
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### Step 2: Identify Your Thermostats
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Since discovered zones are identified only by number, you need to map them to your actual rooms. The easiest way to do this is by using unique setpoint temperatures:
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1. Go to each thermostat in rdz tablet
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2. Set a unique target temperature for each one:
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- Thermostat 1: 17.1°C
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- Thermostat 2: 17.2°C
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- Thermostat 3: 17.3°C
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- And so on...
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3. In Home Assistant, look at the discovered devices:
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- If it's **winter/heating season**: Check the **Winter Setpoint** sensor value
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- If it's **summer/cooling season**: Check the **Summer Setpoint** sensor value
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4. Match the setpoint values to identify which zone corresponds to which room
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### Step 3: Configure Virtual Thermostats First
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Virtual thermostats are used for cooling control. Configure these before real thermostats because you'll need to link them later.
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1. Go to **Settings** > **Devices & Services**
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2. Find "RDZ HMI Control" and click **Configure**
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3. For each virtual thermostat zone:
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- Select the device from the list
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- Set the **Name** to match your room (e.g., "Living Room Cooling")
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- Set **Type** to `virtual`
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- Click **Submit**
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4. Repeat for all virtual thermostats
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### Step 4: Configure Real Thermostats
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Now configure the physical thermostats and link them to their corresponding virtual zones:
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1. Go to **Settings** > **Devices & Services**
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2. Find "RDZ HMI Control" and click **Configure**
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3. For each real thermostat zone:
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- Select the device from the list
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- Set the **Name** to match your room (e.g., "Living Room")
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- Set **Type** to `real`
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- Select the **Linked Virtual Thermostat** (e.g., link "Living Room" to "Living Room Cooling")
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- Click **Submit**
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4. Repeat for all real thermostats
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### Step 5: Verify Setup
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After configuration:
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1. The **Season Switch** entity controls whether the system is in heating or cooling mode
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2. Each thermostat should display the current temperature
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3. Setting a target temperature will:
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- Write to the **winter setpoint** when in heating mode
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- Write to the **summer setpoint** when in cooling mode
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4. Linked thermostats will automatically synchronize their setpoints
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## Understanding the System
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### Season Mode
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The RDZ system operates globally in either heating (winter) or cooling (summer) mode. This is controlled by a single switch that affects all thermostats. Individual thermostats cannot override this setting.
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### Real vs Virtual Thermostats
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- **Real Thermostats**: Physical devices with temperature sensors. These control both heating and cooling but need a linked virtual thermostat for cooling setpoint synchronization.
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- **Virtual Thermostats**: Software-controlled zones without physical sensors. These are typically used for cooling-only zones and receive their setpoints from linked real thermostats.
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### Setpoint Linking
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When you link a real thermostat to a virtual one:
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- Changing the temperature on the real thermostat updates both setpoints
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- The virtual thermostat's setpoint stays synchronized automatically
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- This allows you to use the physical thermostat dial to control cooling temperature
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## Troubleshooting
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### Thermostats show "Unavailable"
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- Verify network connectivity to the RDZ tablet
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- Ensure port 8000 is not blocked by a firewall
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- Check that the tablet is powered on
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### Temperature changes don't take effect
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- Confirm thermostats are in **manual mode** on the physical devices
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- Check that you're changing the correct setpoint for the current season
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### Wrong thermostat responds to commands
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- Re-verify the zone mapping using the unique temperature method
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- Check that virtual and real thermostats are correctly linked
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## Support
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For issues and feature requests, please open an issue on the GitHub repository.
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