Milesight UC300 User manual

IoT Controller
UC300 (Cellular)
User Guide

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Safety Precautions
Milesight will not shoulder responsibility for any loss or damage resulting from not following the
instructions of this operating guide.
The device must not be remodeled in any way.
Do not place the device close to objects with naked flames.
Do not place the device where the temperature is below/above the operating range.
Power off the device when installing or wirings.
Make sure electronic components do not drop out of the enclosure while opening.
The device must never be subjected to shocks or impacts.
Declaration of Conformity
UC300 is in conformity with the essential requirements and other relevant provisions of the CE,
FCC, and RoHS.
Copyright © 2011-2023 Milesight. All rights reserved.
All information in this guide is protected by copyright law. Whereby, no organization or individual
shall copy or reproduce the whole or part of this user guide by any means without written
authorization from Xiamen Milesight IoT Co., Ltd.
For assistance, please contact
Milesight technical support:
Email: [e-mail]
Tel: [phone]
Fax: [phone]
Address: Building C09, Software Park III,
Xiamen 361024, China
Revision History
Date
Doc Version
Description
Mar. 17, 2022
V 1.0
Initial version
June 30, 2023
V 1.1
1. Add cellular IMS options;
2. Support to set initial counting values;
3. Support to add variables on custom server
message;
4. Add RS485 transparent communication.

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Contents
1. Product Introduction ......................................................................................................................... 4
1.1 Overview ...................................................................................................................................4
1.2 Features ................................................................................................................................... 4
2. Hardware Introduction ...................................................................................................................... 4
2.1 Packing List ..............................................................................................................................4
2.2 Hardware Overview ................................................................................................................. 5
2.3 Wiring Examples ...................................................................................................................... 5
2.4 LED Indicators ..........................................................................................................................7
2.5 Reset Button ............................................................................................................................ 7
2.6 Dimensions (mm) ....................................................................................................................8
3. Hardware Installation ........................................................................................................................8
3.1 SIM Installation ........................................................................................................................8
3.2 Antenna Installation ................................................................................................................ 8
3.3 Device Installation ................................................................................................................... 9
3.3.1 Wall Mounting ............................................................................................................... 9
3.3.2 DIN Rail Mounting .........................................................................................................9
4. Operation Guide ...............................................................................................................................10
4.1 Log in the ToolBox .................................................................................................................10
4.2 Communication Settings ...................................................................................................... 11
4.2.1 Cellular Settings ..........................................................................................................11
4.2.2 Application Settings ................................................................................................... 13
4.2.3 SMS Settings ...............................................................................................................15
4.3 Data Interface Settings ......................................................................................................... 16
4.3.1 Digital Input/Pulse Counter ........................................................................................16
4.3.2 Digital Output .............................................................................................................. 18
4.3.3 RS485.......................................................................................................................... 18
4.3.4 RS232.......................................................................................................................... 21
4.3.5 Analog Input/PT100 ................................................................................................... 22
4.4 IF-THEN Command ............................................................................................................... 23
4.5 Maintenance .......................................................................................................................... 26
4.5.1 Upgrade ....................................................................................................................... 26
4.5.2 Backup .........................................................................................................................26
4.5.3 Reset to Factory Default .............................................................................................27
5. Device Payload ................................................................................................................................ 27

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1. Product Introduction
1.1 Overview
UC300 is an IoT controller used for remote control and data acquisition from multiple sensors. It
contains different I/O interfaces such as analog inputs, digital inputs, relay outputs, serial ports
and so on, which support remote device data transmission and control via 3G/4G networks or
SMS. Besides, UC300 supports multiple trigger conditions and actions which works
autonomously even when the network drops.
1.2 Features
Easy to connect with diverse wired sensors through DI/DO/AI/PT100/RS232/RS485
interfaces
Support 3G/4G wireless communication
Multiple triggering conditions and actions
Embedded watchdog for work stability
Industrial metal case design with wide operating temperature range
Support multiple network protocols to be compatible with IoT platforms
Quick and easy management with Milesight IoT Cloud solution
2. Hardware Introduction
2.1 Packing List
1 ×
UC300 Device
1 ×
Cellular Antenna
1 ×
Power Adapter
5 ×
Terminal Blocks
1 × DIN Rail
Mounting Clip
4 ×
Wall Mounting Kits
4 ×
Fixing Screws
1 ×
Quick Start Guide

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1 × Warranty Card
If any of the above items is missing or damaged, please contact your sales representative.
2.2 Hardware Overview
2.3 Wiring Examples
(1) Digital input wiring:
Dry Contact:
Wet Contact:
(2) Relay output wiring:

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(3) 4-20mA wiring:
3-Wire:
2-Wire:
(4) 0-10V wiring:
(5) PT100 wiring:
3-Wire:
2-Wire:

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(6) RS232/RS485 wiring:
RS485 Terminal Resistor1:
DIP Switch
Description
1 on 2 off 3 off
Add 120 Ω resistor between A and B
1 off 2 on 3 off
Add pull-down resistor on B
1 off 2 off 3 on
Add pull-up resistor on A
2.4 LED Indicators
LED
Indication
Status
Description
SYS
System Status
Static On
System works
Slowly Blinks
Fail to acquire data from data interfaces
Static On
System error
ACT
Network Status
Off
Register to cellular network
Blinks as Requests
Send registering network requests
Blinks Twice→Static On
Succeed to register to network
Blinks Once
Succeed to send uplinks
Blinks Twice
Fail to send uplinks
Blinks Twice
Receive downlinks
2.5 Reset Button
There is a reset button inside the device.
1Add resistors to avoid data-corrupting reflections if RS485 data rate is high or cable length is is long.

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Function
Description
SYS LED
Action
Reset
Static Green
Press and hold the reset button for more than 10 seconds.
Static Green →
Rapidly Blinking
Release the button and wait.
Off →Static Green
The device resets to factory default.
2.6 Dimensions (mm)
3. Hardware Installation
3.1 SIM Installation
Release the screws and cover on the antenna connector, insert the SIM card into the slot. If you
want to take out the SIM card, press it to make it pop out.
3.2 Antenna Installation
Rotate the antenna into the antenna connector accordingly.
The external antenna should be installed vertically always on a site with a good signal.

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3.3 Device Installation
UC300 device can be placed on a desktop or mounted to a wall or a DIN rail.
3.3.1 Wall Mounting
1. Fix the wall mounting bracket to the device with 2 screws.
2. Drill 4 holes on the wall according to the bracket, then fix the wall plugs into the wall.
3. Fix the device to the wall plugs with screws. When installation, it’s suggested to fix the two
screws on the top at first.
3.3.2 DIN Rail Mounting
1. Fix the mounting clip to the device with 3 screws.

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You can also try below installation methods:
2. Hang the device to the DIN rail. The width of DIN rail is 3.5cm.
4. Operation Guide
4.1 Log in the ToolBox
1. Download ToolBox software from Milesight IoT website.
2. Power on the UC300 device, then connect it to computer via type-C port.
3. Open the ToolBox and select type as General, then click password to log in ToolBox. (Default
password: 123456)

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4. After logging in the ToolBox, you can change device settings.
4.2 Communication Settings
4.2.1 Cellular Settings
Cellular settings is used for configuring the transmission parameters in cellular network.
Go to General > Basic to configure basic cellular settings.

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Parameters
Description
Network Type
Select from Auto, 4G Only, 3G Only, and 2G Only.
Auto: connect to the network with the strongest signal automatically.
4G Only: connect to 4G network only.
And so on.
IMS
“Enable VoLTE”, “Disable VoLTE” and “MBN” are optional.
PIN Code
Enter a 4-8 characters PIN code to unlock the SIM.
User
Enter the username for cellular dial-up connection provided by local ISP. The
max length is 31 characters.
Password
Enter the password for cellular dial-up connection provided by local ISP. The
max length is 31 characters.
APN
Enter the Access Point Name for cellular dial-up connection provided by local
ISP. The max length is 31 characters.
SMS Center
Number
Enter the local SMS center number for storing, forwarding, converting and
delivering SMS message. This is required if you need to use SMS control or
reporting feature.
SMS Data Coding
Scheme
7 Bit: standard GSM message coding for most common letters and symbols,
can contain up to 160 characters.
8 Bit: suit for multimedia messages, can contain up to 140 characters.
UCS-2: send Unicode characters and suit for more languages like Chinese,
Korean and Arabic, can contain up to 70 characters.
NTP Server
Enter the NTP Server's IP address or domain name. After registered to
network, the device will sync the device time from this server. Default:

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www.ntp.org
Change Password
Change the password to loggin ToolBox and SMS password validation.
4.2.2 Application Settings
Go to Application > Application to configure the settings to send data to corresponding servers.
About the MQTT topics, please refer to the UC300 Cellular Communication Protocol .
Parameters
Description
Application Mode
Select from Milesight IoT Cloud, AWS, TCP, UDP, and MQTT.
Reporting Interval
(s)
The interval of reporting interface data. Default: 1800s, Range: 10-64800s
Note: for Milesight IoT Cloud mode, the reporting interval should be
configured on the cloud webpage.
Milesight IoT Cloud
Keep Alive Interval
(s)
After connected, the device will send heartbeat packet regularly to keep alive.
Default: 200 s, Range: 1-3600 s
AWS
Server Address
Fill in the AWS server domain name which the data sends to.
Keep Alive Interval
(s)
After connected, the device will send heartbeat packet regularly to keep alive.
Default: 200 s, Range: 1-3600 s
CA File
Import the CA.crt file.
Client Certificate
Import the client certificate.
Client Key
Import the client key.

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TCP/UDP
Description
After TCP/UDP connection established, the device will send one package
including the description to identify the device. The max length is 32
characters.
Keep Alive Interval
(s)
For TCP connection, the device will send heartbeat packet regularly to keep
alive. Default: 60 s, Range: 60-7200 s
Custom Heartbeat
Mode
After enabled, the device will send custom heartbeat packets to TCP server.
Custom Content
Customize the heartbeat packet content. The max length is 32 characters.
Heart Interval (s)
The device will send custom heartbeat packet regularly. Default: 30 s, Range:
30-3600 s
Require Response
After the device send custom heartbeat packet, it needs a specific response
from server.
Response Content
Customize the server reply content after receiving custom heartbeat packets.
The max length is 32 characters.
Server Address
Fill in the TCP/UDP server address (IP/domain name).
Server Port
Fill in the TCP/UDP server port. Range: 1-65535.
Note: The server address and port should not exactly the same as the
TCP/UDP settings on RS232 page.
Status
Show the connection status between the device and the server.
MQTT
Broker Address
Fill in MQTT broker address to receive data.
Port
Fill in MQTT broker port to receive data.
Client ID
Client ID is the unique identity of the client to the server, it must be unique
when all clients are connected to the same server.
Keep Alive Interval
(s)
After the client is connected with the server, the client will send heartbeat
packet regularly to keep alive. Default: 60 s, Range: 1-65535 s
User Credentials
Enable
Enable user credentials.
Username
The username used for connecting to MQTT broker.
Password
The password used for connecting to MQTT broker.
TLS
Enable
Enable the TLS encryption in MQTT communication.
Protocol
It’s fixed as TLS v1.2.

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CA File
Import the CA.crt file.
Client Certificate
Import the client certificate.
Client Key
Import the client key.
4.2.3 SMS Settings
UC300 cellular version supports SMS control and SMS report. Before that, ensure the device has
registered to cellular network and SMS Center Number is typed in General > Basic settings.
About the SMS control commands and report contents, please refer to the UC300 Cellular
Communication Protocol .
SMS Control
Parameters
Description
Enable
Enable to allow users to send SMS to control the device.
Control Center
Number
The number used to control this device. 2 control numbers can be added at
most.
Success
Confirmation
After control success, the device will send success reply to the control center
number.
Failure
Confirmation
After control failure, the device will send failure reply to control center number.

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SMS Report
Parameters
Description
Enable
Enable to allow device to report device DI/DO status via SMS.
Any Change
Report
When any of DI/DO interfaces’ status changed, the device will send the
current status via SMS.
Regular Report
Interval
Report the time, signal, network type and data interface status/values of
device regularly via SMS. Default: 720 mins, Range: 1-1440 mins.
SMS Messaging
Protocol
Select the SMS messaging protocol. It’s General by default.
General: send SMS as general string format.
UCP: send SMS as hex format, you can decode it referring to UC300
Communication Protocol document.
Number
Reports SMS to these phone numbers. 6 numbers can be added at most.
4.3 Data Interface Settings
4.3.1 Digital Input/Pulse Counter
UC300 supports 4 digital inputs and every input can work as either digital input mode to detect
high/low level or pulse counter to record counting values. When working as digital input, UC300
will upload the data according to reporting interval or when status changes.

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Parameters
Description
Enable
Enable digital input to detect status and upload the data.
Digital Input
Fetch
Click to get the current input status.
Counter
Digital Filter
It’s recommended to enable when pulse period is greater than 250 us.
Start/Stop
Click to start/stop counting. Note that UC300 will send non-changeable
counting values if you do not click Start.
Refresh
Refresh to get latest counter values.
Clear
Count the value from 0.
Modify the
Set the initial counting value.

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count values
4.3.2 Digital Output
UC300 supports 2 digital outputs to control the devices.
Parameters
Description
Enable
Enable the digital output to control the device and upload changed
status.
When Power is
Restored, DO
After the device power is restored, the DO status will return to normally
closed or normally open according to this parameter.
Fetch
Click to get the current output status.
Switch
Click to change the DO status.
4.3.3 RS485
UC300 has one RS485 port to support Modbus RTU or transparent device connection.
1. Connect RS485 device to RS485 port.
2. Go to General > RS485 to enable RS485 and configure serial port settings. Serial port settings
should be the same as the RS485 terminal devices.

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Parameters
Description
Enable
Allow the device to collect RS485 data and upload the data.
Stop Bit
1 bit/2 bit are available.
Data Bit
8 bit is available.
Parity
None, Odd and Oven are available.
Baud Rate
1200/2400/4800/9600/14400/19200/38400/57600/115200 are available.
Execution Interval
(ms)
The execution interval between each Modbus channel command.
Max Resp Time
(ms)
The maximum response time that the UC300 waits for the reply to the
command. If it does not get a response after the max response time, it is
determined that the command has timed out.
Max Retry Time
(ms)
Set the maximum retry times after device fails to read data from RS485
terminal devices.
Transparent
Communication
If transparent communication is enabled, the device will work as a bridge to
transmit messages between server and RS485 terminal devices
transparently.
Transparent mode
Select transparent mode when Transparent Communication is enabled.
Active Transparent Communication: the RS485 device can react according
to server commands only when the server sends any type of command to it.
Two-way Transparent Communication: not only can server send any type of
command to RS485 device, but also RS485 device supports transmitting the
data to the server actively.

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Note: When Two-way Transparent Communication is enabled, Modbus
channels cannot be used, and corresponding IF-THEN command will not
work.
3. Click to add Modbus channels, then save configurations.
Parameters
Description
Channel ID
Select the channel ID you want to configure from 16 channels.
Name
Customize the name to identify every Modbus channel.
Slave ID
Set Modbus slave ID of terminal device.
Address
The starting address for reading.
Quantity
Set read how many digits from starting address. It can be set as 1~4.
Type
Select data type of Modbus channels.
Byte Order
Set the Modbus data reading order if you configure the type as Input register
or holding register. This will affect the uplink order and for details refer to
UC300 Cellular Communication Protocol.
INT32/Float: ABCD, CDBA, BADC, DCBA
INT16: AB, BA
Sign
The tick indicates that the value has a plus or minus sign.
Fetch
After click, UC300 will send Modbus read command to test if it can read
correct values.
Example: the device will send command as below settings: 01 03 00 00 00
01 84 0A
4. Click Fetch to check if UC300 can read correct data from terminal devices.
Note: Do not click Fetch frequently since response time to reply is differ for every terminal
device.