Meltem M-WRG-S

Name: Meltem M-WRG-S
Brand: Meltem
SKU: 645476aa-a1ae-4e3e-bc85-967cd57700d6

Meltem

Controls Meltem ventilation systems via RS485 Modbus RTU

Overview

Template for the Meltem M-WRG-S ventilation system using Modbus RTU over RS485. It enables monitoring and control of ventilation functions through a ModbusCloud gateway at 9600 baud.

Use cases

Monitor ventilation operating status and fan speed remotely from the ModbusCloud dashboard.
Adjust ventilation levels for individual Meltem M-WRG-S units without visiting the site.
Create alerts when a ventilation unit stops responding or reports a fault condition.
Track historical ventilation data across multiple apartments or rooms in one building.
Schedule ventilation mode changes based on occupancy patterns or time of day.

Installation

1Connect the ModbusCloud gateway (MCG or MLP series) to the Meltem M-WRG-S RS485 terminals using a twisted pair cable, observing correct A/B polarity.
2Set the baud rate on both the gateway and the M-WRG-S to 9600, with matching parity and stop bit settings.
3Assign a unique Modbus slave address on each Meltem M-WRG-S unit connected to the RS485 bus.
4Enable Modbus RTU communication on the M-WRG-S unit via its configuration menu or DIP switches, as described in the Meltem installation manual.
5Import the Meltem M-WRG-S template in the ModbusCloud platform and assign it to the gateway, entering the correct slave address for each unit.
6Verify communication by checking live data on the ModbusCloud dashboard and confirming that control commands are accepted by the unit.