# Installation

The supplied DIN rail mount is the recommended way to mount the NODA Modbus Gateway. This may be in any larger installation cabinet, smaller installation box or similar. If the equipment is safe from water damage and dust ingress, it can be mounted without a separate enclosure as a last resort.

## Estimation of time required for installation

The time required depends on a few factors;

• Familiarity with previous installations of NODA Modbus Gateway equipment.
• Familiarity with the control equipment.
• Knowledge of connecting Ethernet networks or RS485-bus networks.
• If the controller is freely programmable or an application-specific controller.

The tasks required for installation are (in general);

• Contact NODA and make a plan for installation a few days ahead of time
• Get to the installation location
• Find the energy controller
• Ensure that one can manage the controller over Modbus TCP / RTU
• Locate a suitable mounting location for the NODA Modbus Gateway
• Mount the equipment
• Wire the controller and NODA Modbus Gateway equipment together
• Validate the installation with NODA deployment staff

A skilled technician can perform these tasks in less than four hours without taking into account time for getting to the location, establishing a work environment and clean-up.

## Mounting location

The NODA Modbus Gateway connects to the NODA MQTT network via the mobile network (4G / 5G). Therefore, install the device in a location where wireless transmission is allowed and the appliance can acquire a wireless signal.

### Inside a larger installation cabinett

This option is one of the most well-suited installation locations. The equipment is safe from the environment, and if the cabinet is locked also secured from unauthorized access. Remember that the cabinet may work as a signal shield against the mobile network, resulting in a very low or no signal for the NODA Modbus Gateway. In this situation, your only option is to exchange the included antennas for antennas with an extension cord.

### Inside a separate plastic box / enclosure

Another suitable choice is to use a larger box with a DIN rail to mount the NODA Modbus Gateway and the power supply. This box can be placed upwards to 50 meters from the controller if one can find no suitable location in the vicinity.

### Without a protective enclose

As a last resort, one can mount the NODA Modbus Gateway directly on any suitable surface as long as the risk of water or dust ingress is low.

## Configuration of the NODA Modbus Gateway

Configuration of the NODA Modbus Gateway is done remotely by NODA deployment staff. Depending on the installation scenario and the prep work done.

This configuration can often be done ahead of the shipment of the equipment. If any equipment configuration is required in the field, then once the equipment is connected to the internet, it can be accessed by the NODA deployment staff.

## Power supply

The NODA Modbus Gateway is powered by the supplied power supply or any 9-30V industrial power supply.

## Ethernet

When acting as a Modbus master, the NODA Modbus Gateway will connect to the network (LAN) via a switch from the ethernet port marked LAN1. However, suppose the slave device is not already on a LAN. In that case, one can directly connect the device to the NODA Modbus Gateway on the ethernet port marked LAN1 or the next available LAN port if used in conjunction with a NODA Modbus Gateway Addon.

When acting as a Modbus slave, the NODA Modbus Gateway will provide a Modbus TCP interface with a defined Holding Register scope on the LAN1 port. The default port number for this is 502.

## RS-485

Wire the NODA Modbus Gateway to the network by using the following pinout.

### 4-wire network

If the NODA Modbus Gateway is wired to a 4-wire network (separate request and reply buses), then wire the D_P pin and the D_N pin to the request bus and wire the R_P pin and the R_N pin to the reply bus.

### 2-wire network

If the NODA Modbus Gateway is wired to a 2-wire network (single request and reply bus), bridge the pin D_P to the R_P pin and the D_N pin to the R_N pin before connecting to the bus.

## Wiring

Installation without the NODA Modbus Gateway Addon only works if the energy controller can be programmed (freely programmable controller). If the controller is an application-specific controller, then the NODA Modbus Gateway Addon is required.

Connect the energy controller to the NODA Modbus Gateway using either; Ethernet or RS-485.