Opentherm to Modbus gateway

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₹15,969.00 *

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  • Unipi-2015036
  • 2015036
Opentherm to Modbus gateway module allowing control of  OpenTherm  boiler... more
Product information "Opentherm to Modbus gateway"

Opentherm to Modbus gateway module allowing control of OpenTherm boiler with UniPi 1.1, UniPi Neuron and UniPi Axon controllers. The module is a gateway for linking systems with Modbus RTU RS485 (EIA-485) communication and boilers with Opentherm+ (OT+) and thermostats. It allows to either monitor data flow between thermostat and boiler or to control the boiler directly. We recommend connecting this module to UniPi v 1.1 via USB-RS485 Convertor.

Device modes

  • Monitor: module is only monitoring communication between boiler and thermostat
  • Controller: in this mode, it is also possible to control the parameters of the boiler by writing to Modbus registers

Modbus RTU RS485

  • Configurable address
  • Speed 9.6 / 19.2 kbps
  • Parity E / N
  • Optional use of terminating resistor
  • Up to 7 gateways in one Modbus line

Functions in monitoring mode

  • OT boiler and thermostat interconnection
  • Extending the OT communication channel

Communication Module MM-OT101 is mostly used for control and monitoring of OpenTherm boilers in HVAC (Heating, Ventilation, Air Conditioning) and energy management systems. It uses 5-24V DC power supply and can be mounted onto DIN rail (35 mm).

Technical Parameters 

Dimensions 53 mm × 90 mm × 58 mm
Weigth 85 g
Power 5-24 V DC
Power consumption Max 750 mW
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