MacroAir Technologies AirLynk BACnet - Introduction; Bacnet Setup

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15 Configuration and Operation MacroAir AirLynk

Rev Date: 071519

Introduction

1. PLC Gateway

Auto-Discovery (Every Power-up): Supported RS-485 devices can be automatically detected

and identified for addition to the PLC’s configuration.

Web Configurator (Retains through Power Cycle): For RS-485 devices that are not supported

by Auto-Discovery, use the embedded tool which is accessed with a browser, referred to in

this manual as the Web Configurator. Select the device(s) from a drop-down list of known

profiles and assign at the stated Modbus address.

BACnet Setup

2. Configuring Device Communications

Set Modbus RTU Node-ID for each of the devices attached to the PLC.

• Set Modbus Node-ID for each of the devices attached to PLC. The Modbus Node-ID’s

need to be uniquely assigned between 1 and 30.

- The Modbus Node-ID that is assigned for each device needs to be documented.

• The Modbus Node-ID’s assigned are used for designating the Device Instance

for BACnet/IP and BACnet MS/TP

• The Modbus TCP/IP Node-ID will be set to the same value as the Node-ID of the

Modbus RTU device.