MB-OTG 1-Channel Modbus-to-OpenTherm Gateway
Description
The 1-channel ModBus – OpenTherm gateway can be installed in the electrical panel box or inside the generator chassis that communicates with is powered with 12 Vdc. The supervision system that the gateway is connected to must have Modbus RTU protocol (RS-485) with settable communication parameters (baud rate 9600 or 19200, parity even or none).
The configurable slave address goes from 16 to 23.
The gateway is set up with 1 channel for communication through OpenTherm protocol with only one heat generator. All of the connections can be set up using removable terminals; plus, the connection is opto-isolated towards the generator.
See the datasheet and the manual for more info. Moreover it is also available the MB-OT4 that can manage till 4 generators.
Inputs and outputs · 27
| Name | Type | Unit |
|---|---|---|
| Slave Configuration | Modbus | <v.1> |
| OEM Fault code | Modbus | <v.1> |
| RBP Flags | Modbus | <v.1> |
| Boiler maximum capacity (kW) | Modbus | <v.1> |
| Relative modulation level | Modbus | <v.1> |
| Heating circuit H2O pressure (bar) | Modbus | <v.1> |
| Water Outlet Temperature | Modbus | °C |
| DHW Temperature | Modbus | °C |
| Water Inlet Temperature | Modbus | °C |
| Boiler Working time | Modbus | <v.1> |
| Heating set point limit | Modbus | °C |
| DHW set point limit | Modbus | <v.1> |
| Exhaust fumes Temperature | Modbus | <v.1> |
| Water Pump working time | Modbus | <v.1> |
| Opentherm communication Status | Modbus | |
| Heating Set point | Modbus | <v.1> |
| DHW Set point | Modbus | <v.1> |
| Modulation Power limit | Modbus | <v.1> |
| Alarm present | Modbus | |
| Heat mode ON | Modbus | |
| DHW mode ON | Modbus | |
| Flame ON | Modbus | |
| Heating Set Point | Modbus | °C |
| DHW Set Point | Modbus | °C |
| Modulation Power Limit | Modbus | % |
| Heating Enable | Modbus | |
| DHW Enable | Modbus |
FAQ
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Questions and answers
Where to buy
OpenDo you know where I can buy the gateway? I only see an italian site from Marcomweb. Is this the only supplier?
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