DELTA uno lite BACnet User Guide

: June 3, 2024
: Delta

Table of Contents

DELTA uno lite BACnet
Overview
Hardware Interface
- Buttons
BACnet mode
BACnet MS/TP address and baudrate
- BACnet Device information
DIP example
Modbus mode
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DELTA uno lite BACnet

Overview

unpolite is an indoor air quality monitor to measure the space temperature/humidity/CO2 / PM2.5 / PM10 / PM1 / TVOC and exposes the measurements directly onto a BACnet MS/TP or Modbus RTU network. Moreover, the measurements are also accessible with UNO apps through BLE or UNO web through Wi-Fi (Wi-Fi model). Please refer to the unpolite official website for more information.

This document is primarily concerned with how to add unpolite to BACnet MS/TP or Modbus network.

Hardware Interface

DELTA-uno-lite-BACnet-fig-1

Buttons

Key	Description
Hardware reset	Push this button will trigger a power cycle.

Factory reset

| After booting, press this button three times within 2 seconds will trigger factory reset. The values below will be restored to default:

Modbus baudrate
BACnet saved mac address
Wi-Fi MQTT broker setting (Wi-Fi model)

NOTE: It’s recommended to use a paper clip to press the keys.

Terminal block

Terminal	Description
V+	Power input. For more information, please refer to the production

specification.
V-| Power input. For more information, please refer to the production specification.
A+| RS485(+) data pin. For Modbus/BACnet network.
B-| RS485(-) data pin. For Modbus/BACnet network.
__

GND

| Ground terminal. Each RS485 driver in an installation is recommended to connect to the same ground to get a common reference.

DIP switch

DIPs	Description	OFF
1 – 6	Refer to the later sections for the definition of each pin
__ 7	BACnet mode switch. ON : BACnet mode OFF : Modbus mode	__
8	RS485 terminator resistor (120 ohm)

NOTE:
The dips should be adjusted to the proper position in power-off state. Adjust the dips, then power on the device.

BACnet mode

Unolite will run on BACnet MS/TP mode if the 7th pin is set to ON state. The definition of the dips in BACnet mode as listed below:

DIP	Description	ON	OFF
1	BACnet slave position[3] (check address table)
2	BACnet slave position[2] (check address table)
3	BACnet slave position[1] (check address table)
4	BACnet slave position[0] (check address table)
5	BACnet MS/TP baudrate[1] (check Baudrate table)
6	BACnet MS/TP baudrate[0] (check Baudrate table)

7

NOTE:
The definitions of dip are different from Modbus mode. Please make sure which mode is chosen.

BACnet MS/TP address and baudrate

BACnet Address Table

Dip|

BACnet MAC address

---|---
1| 2| 3| 4
↓| ↓| ↓| ↓| 0x00 [0]
↓| ↓| ↓| ↑| 0x01 [1]
↓| ↓| ↑| ↓| 0x02 [2]
↓| ↓| ↑| ↑| 0x03 [3]
↓| ↑| ↓| ↓| 0x04 [4]
↓| ↑| ↓| ↑| 0x05 [5]
↓| ↑| ↑| ↓| 0x06 [6]
↓| ↑| ↑| ↑| 0x07 [7]
↑| ↓| ↓| ↓| 0x08 [8]
↑| ↓| ↓| ↑| 0x09 [9]
↑| ↓| ↑| ↓| 0x0A [10]
↑| ↓| ↑| ↑| 0x0B [11]
↑| ↑| ↓| ↓| 0x0C [12]
↑| ↑| ↓| ↑| 0x0D [13]
↑| ↑| ↑| ↓| 0x0E [14]
↑| ↑| ↑| ↑| 0x0F [15]

BACnet Baudrate Table

Dip|

baudrate

---|---
5| 6
↓| ↓| 76800
↓| ↑| 9600
↑| ↓| 19200
↑| ↑| 38400

BACnet Object Table

BACnet Object Table

Type

|

Identifier

|

Name

|

Unit

|

Descriptions

Analog Input

| AI-0| Temperature| °C| Range: 0.00 – 50.00
AI-1| Humidity| %| Range: 10.00 – 80.00
AI-2| PM2.5| μg/m3| Range: 0 – 1000
AI-3| PM10| μg/m3| Range: 0 – 1000
AI-4| PM1| μg/m3| Range: 0 – 1000
AI-5| CO2| ppm| Range: 400 – 5000
AI-6| Temperature_F| °F| Range: 32.00 – 122.00
AI-7| TVOC| ppm| Range: 0 – 30.00

AI-8

|

IAQ index

|

–

| Give an index according to current PM and CO2 concentration. The index also be referenced by IAQ LED:

GREEN: 0-80
YELLOW: 81-100
RED: 101-400
PURPLE: 400

Analog Value

|

AV-0

|

MAC

Address

|

–

| Range: 0 – 127

Set value on this object to configure the MAC address. The MAC address will be saved and overwritten the dip setting.

The saved value will be cleaned by

factory reset or write 255 to this object.

Device will reboot after writing on this object

Analog Value

|

AV-1

|

Temperature_Cali

|

°C

| Range: 0 – 5000

Write the ambient temperature(°C ) to calibrate unolite’s temperature.

EX: unolite’s temperature is 23°C, write 2300 to this object will calibrate

unolite’s temperature to 23°C

---|---|---|---|---

AV-2

|

CO2_Cali

|

ppm

| Range: 400 – 1500

Writing the current CO2 value to this node to calibrate unolite’s CO2. It will take effect within 10 seconds. Write to this node will disable CO2 ASC.

AV-3

|

CO2_ASC

|

–

| CO2 Automatic Self-Calibration mode.

By default, CO2 sensor ASC mode is running and the value presents “1”.

When the CO2_Cali have been written, the ASC mode will be disabled and the value will present “0”.

You still can activate ASC mode by this node.

AV-4

|

IAQ_LED_Ctl

|

–

| The switch of IAQ indicator.

Set value to 0 to disable the IAQ indicator.

Set value to 1 to enable the IAQ indicator.

NOTE:
The property “Out of Service” of the sensor object means the health state of the sensors. If “Out of service” is true, try to power cycle the device to recover it.

BACnet Device information

Object Name| Descriptions
Model Name| “UNOLite”
Max Master| 127
Application Version| The firmware version of unolite version
__

__

Object Identifier

| The identifier number is composed of serial number.

EX: The SN of unolite is 2301L0170040. Then the BACnet object identifier number will be 3010040.

Vendor Name| Delta

DIP example

Num	1	2	3	4	5	6	7	8
ON	****	****	****				****	********
OFF				****	****	****

Here is an example to demonstrate how to configure your unolite:

The pin 8 is ON, the 120ohm terminator resistor is enabled.
The pin 7 is ON, the unolite will run on BACnet mode.
The pin 5/6 is OFF/OFF and check the baudrate table, unolite will run on 76800
The pin 1/2/3/4 is ON/ON/ON/OFF and check the address table, the MAC address of unolite is 0xE(14)