LG VRF systems to Modbus RTU Interface

The LG-Modbus interface allows full bidirectional communication between LG VRF systems and Modbus RTU (RS-485) networks. The interface acts as a server device for the installation, accessing all signals from the air conditioner unit. A wired remote controller can also be part of the network.

Features and benefits

• Modbus RTU (EIA-485) server device

  The interface acts as a Modbus server device through its Modbus RTU (EIA-485 connector) port.

• Dual configuration options

  Configuration is carried out through the interface's onboard DIP switches and the Modbus interface.

• Energy savings through a window contact function

  This function helps minimize costs, as HVAC systems are a major building energy consumer.

• Total unit control and monitoring from Modbus RTU

  Through internal variables, running hours counter (for maintenance purposes), and error indication.

• AC unit control by both the remote and Modbus RTU

  The AC unit can be simultaneously controlled by the manufacturer's remote controller and Modbus RTU.

• No external power required

  The interface is powered directly from the AC unit, so no external power supply is required.

• Multiple mounting options

  Mounting options include DIN rail, wall, or, in some AC models, even inside the indoor unit.