HAM DixMBus
The HAM DixMBus connects a Dixell refrigeration controller to the HAM app over Modbus. You see the temperatures and the state of the fridge remotely, and you change settings with one tap.
The serial number starts with e49:.
Compatible controllers
Section titled “Compatible controllers”- Dixell XW60L
- Dixell XR70T
- Dixell XWi70K
For a different model, contact us.
What it measures
Section titled “What it measures”| Reading | Unit | Note |
|---|---|---|
| Temperature | °C | Probe 1 of the controller. |
| Temperature 2, 3, 4 | °C | The other probes of the controller, if it has them. |
| Dixell Unit Status | state | ON, Defrost, Fast Freeze, Keyb Lock, Energy Save, DI1, DI2. |
| Dixell Output Status | state | Compressor, Defrost, Fan, Aux, Light, Alarm. |
| General input 1, 2 | open / closed | General inputs of the HAM device. They show when you configure them. |
| Input counter 1, 2 | count | Counts the changes of the input. |
Each state is also available as a separate reading. This lets you make a rule, for example for the controller alarm or for a long defrost.
Typical uses
Section titled “Typical uses”- Fridges and cold rooms with a Dixell controller in shops and warehouses.
- Alerts for a controller alarm.
- Changes to the controller settings without a site visit.
Installation
Section titled “Installation”The device connects to the Modbus port of the Dixell controller. A refrigeration technician or an electrician makes the connection. You connect the device to WiFi from the mobile app. See Connect to WiFi. For general information, see Modbus.
For installation and availability, contact us.
Settings
Section titled “Settings”- Baudrate: the speed of the Modbus connection. Set it to match the controller.
- Modbus Address: the address of the controller. Set it to match the controller.
The Modbus section on the device page shows the values of the controller. You can download them as CSV.
Controls
Section titled “Controls”In the Modbus section, under Presets, you make buttons with a name of up to 4 characters. Each button writes a group of values to the controller with one tap, for example a set of summer settings. The buttons show in the Preset output on the device page. With no value, the output shows Unset.
See controls.
Recommended rules
Section titled “Recommended rules”- An alert when the temperature goes out of range.
- An alert when the controller Alarm turns on.
- An alert when the device stops sending data.
See Your first alert.
Troubleshooting
Section titled “Troubleshooting”- I cannot reset the alarm from the app: the controller alarm does not reset over Modbus. It clears when its cause stops.
- No values come from the controller: check Baudrate and Modbus Address. They must match the controller.
- The device is offline: see device offline.
Specifications
Section titled “Specifications”| Connection to controller | Modbus |
| Connectivity | WiFi 2.4 GHz |