Milesight EM400-MUD Multi Functional Ultrasonic Distance Sensor User Guide

September 16, 2024
Milesight

EM400-MUD Multi Functional Ultrasonic Distance Sensor

Specifications

  • Product Name: Multifunctional Ultrasonic Distance Sensor

  • Model: EM400-MUD

  • Waterproof Rating: IP67

  • Operating Modes: Standard, Trash Bin, Parking Lot

  • Additional Sensors: 3-axis accelerometer, temperature
    sensor

  • Communication: Milesight IoT Cloud compatible

Product Usage Instructions

Safety Precautions

It is essential to follow the safety precautions to ensure
proper operation and longevity of the device:

  • Do not disassemble or remodel the device.

  • Change the default password (123456) for security purposes
    during initial configuration.

  • Avoid placing the device near naked flames or in extreme
    temperatures.

  • Ensure both batteries are new when installing to maximize
    battery life.

  • Avoid subjecting the device to shocks or impacts.

Declaration of Conformity

The EM400-MUD complies with CE, FCC, and RoHS requirements. Any
unauthorized copying of information in this guide is
prohibited.

Contact Information

For technical support, contact Milesight at:

  • Email: iot.support@milesight.com
  • Support Portal: support.milesight-iot.com
  • Telephone: 86-592-5085280

Revision History

Refer to the revision history for updates and version
information.

Frequently Asked Questions (FAQ)

Q: Can the EM400-MUD be used indoors?

A: While the device is suitable for outdoor applications, it can
also be used indoors depending on the specific use case.

Q: How do I change the operating mode of the sensor?

A: To change the operating mode, refer to the Operation Guide
section in the user manual for detailed instructions on selecting
between standard, trash bin, and parking lot modes.

Multifunctional Ultrasonic Distance Sensor
EM400-MUD
User Guide

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 disassembled or remodeled in any way. In order to protect the security of the device, please change the device password when first
configuration. Default password is 123456.
The device is not intended to be used as a reference sensor, and Milesight won’t should
responsibility for any damage which may result from inaccurate readings.
Do not place the device close to objects with naked flames. Do not place the device in where the temperature is below/above the operating range. Make sure both batteries are newest when install, or battery life will be reduced. The device must never be subjected to shocks or impacts.
Declaration of Conformity
EM400-MUD 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: iot.support@milesight.com

Support Portal: support.milesight-iot.com

Tel: 86-592-5085280

Revision History
Date March 30, 2023 June 15, 2023

Fax: 86-592-5023065 Address: Building C09, Software Park III,
Xiamen 361024, China

Doc Version V 1.0 V 1.1

Description Initial version Add EM400-MUD NB/Cat M Version

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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 Dimensions (mm) …………………………………………………………………………………………………….. 5 2.4 Power Button …………………………………………………………………………………………………………… 5
3. SIM Installation (NB Version Only) ………………………………………………………………………………………5 4. Operation Guide …………………………………………………………………………………………………………………6
4.1 NFC Configuration ……………………………………………………………………………………………………. 6 4.2 Basic Settings ………………………………………………………………………………………………………….. 7 4.3 Communication Settings ………………………………………………………………………………………….. 9
4.3.1 LoRaWAN Settings (LoRaWAN® Version Only) …………………………………………………. 9 4.3.2 Application Mode Settings (NB Version Only) ………………………………………………….12 4.4 Advanced Settings …………………………………………………………………………………………………. 13 4.4.1 Calibration Settings ………………………………………………………………………………………. 13 4.4.2 Threshold Settings ……………………………………………………………………………………….. 14 4.5 Maintenance ………………………………………………………………………………………………………….. 14 4.5.1 Upgrade ……………………………………………………………………………………………………….. 14 4.5.2 Backup ………………………………………………………………………………………………………….15 4.5.3 Reset to Factory Default …………………………………………………………………………………16 5. Installation ……………………………………………………………………………………………………………………… 17 6. Communication Protocol ………………………………………………………………………………………………….18 6.1 LoRaWAN® Version ………………………………………………………………………………………………… 18 6.1.1 Uplink Data …………………………………………………………………………………………………… 19 6.1.2 Downlink Commands ……………………………………………………………………………………. 20 6.2 NB Version …………………………………………………………………………………………………………….. 22 6.2.1 AWS/MQTT Topics ………………………………………………………………………………………..22 6.2.2 Uplink Data …………………………………………………………………………………………………… 22 6.2.3 Downlink Commands ……………………………………………………………………………………. 25
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1. Product Introduction
1.1 Overview
EM400-MUD is a multifunctional ultrasonic distance sensor with small blind spot. Besides a wide measuring rage, EM400-MUD is equipped with three pre-set modes including standard mode, trash bin mode, and parking lot mode for different applications.
With IP67 waterproof rating and internal damp-proof coating, it is suitable for outdoor applications. Besides, EM400-MUD is equipped with a 3-axis accelerometer and temperature sensor to detect the tilt status of devices. Compliant with Milesight IoT Cloud, users know the container status and fill- in level in real-time via browser and mobile App remotely.
1.2 Features
3-450 cm wide detection range with small blind zone Equipped with three pre- set modes for different applications Equipped with NTC thermistor for the detection and alarm of trash burning Built-in 3-axis accelerometer sensor to monitor device tilt status Damp-proof coating inside and IP67 waterproof enclosure for outdoor applications Built-in two 9000 mAh replaceable batteries and work for 10 years without replacement Equipped with NFC for one touch configuration, support card emulation mode Equipped with GNSS positioning (NB version only) Function well with standard LoRaWAN® gateways and network servers (LoRaWAN® version
only) Compatible with Milesight IoT Cloud (LoRaWAN® version only)
2. Hardware Introduction 2.1 Packing List

1 × EM400-MUD

Device

Mounting Kits

1× Warranty Card

1× Quick Guide

If any of the above items is missing or damaged, please contact your sales representative.

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2.2 Hardware Overview 2.3 Dimensions (mm)

2.4 Power Button

EM400-MUD can be switched on/off via NFC. Besides, users can use power button to switch on/off and reset the device manually.

Function Switch On Switch Off

Action Press and hold the button for more than 3 seconds. Press and hold the button for more than 3 seconds.

LED Indication Off On On Off

Reset

Press and hold the button for more than 10 seconds. Quickly Blinks

Check Quickly press the power button.
On/Off Status

Light On: Device is on Light Off: Device is off

3. SIM Installation (NB Version Only)
Release the screws and back cover, insert the SIM card (3FF), then replace the back cover to the device and fix the screws. Note: 1) PSM (Power Saving Mode) is required for the SIM card. 2) The device does not support hot plugging (also called hot swapping), please reboot the device after inserting the SIM card.

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  1. When a new SIM card is inserted to the device for the first time, it will take about 2 minutes to register to network; next time the registration time will be shorten to 30s. 4) When the device does not send data, the device will go to sleep mode and the network status will be unregistered.
    4. Operation Guide 4.1 NFC Configuration
    EM400-MUD can be configured via NFC. 1. Download and install “Milesight ToolBox” App from Google Play or App Store. 2. Enable NFC on the smartphone and open “Milesight ToolBox” App. 3. Attach the smartphone with NFC area to the device to read the basic information.
    4. Basic information and settings of devices will be shown on ToolBox if it’s recognized successfully. You can switch on/off, read and write the device by tapping the button on the Apps. In order to protect the security of devices, password validation is required when configuring via unused phone. Default password is 123456.
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Note: 1) Ensure the location of smartphone NFC area and it’s recommended to take off phone case. 2) If the smartphone fails to read/write configurations via NFC, keep the phone away and back to try again. 3) EM400-MUD can also be configured by dedicated NFC reader provided by Milesight IoT.
4.2 Basic Settings
Go to Device > Setting > General Settings of ToolBox App to change the reporting interval, etc.

Parameters Device Mode
Reporting Interval

Description Select from Standard Mode, Bin Mode or Parking Lot Mode. Reporting interval of transmitting data to server. LoRaWAN® Version: Standard Mode: 10 minutes as default, range: 1~1080 minutes; Bin mode: 20 minutes as default, range: 1~1080 minutes; Parking Lot Mode: 1080 minutes as default. If the sensor detects the

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occupancy status change, it will report immediately.

NB Version:

Standard Mode/Bin Mode: 30 minutes as default, range: 1~1440 minutes.

Collecting Interval

Collecting interval of measuring distance on Parking Lot Mode. Default:
20s; Range: 1~600s Set the installation height between device and ground when in Parking Lot Mode. Default: 3m; Range: 0.030~4.500m Threshold Distance Value () is 1m as default, triggering logic is as below: Installation Height – Detected Distance > , the sensor will reports
occupied immediately. Installation Height – Detected Distance < , the sensor will reports
vacant immediately.

Installation Height

Tilt & Distance Switch

When detecting that the offset angle is greater than 20 degrees, turn off the distance sensor.

Change Password Change the password for ToolBox App or software to access this device.

NB Version Only Cumulative Numbers Positioning Settings
The duration of Motion
The duration of stationary
Motion Report Interval/Min

Store this number of periodic packets to report together.
Enable GNSS positioning. When the device is on motion status, it will only upload positioning data instead of distance data. When device is detected to move beyond this duration, it will upload a GNSS data packet. When device is detected to stop moving beyond this duration, it will upload a GNSS data packet.
The interval to report GNSS data during the motion.

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4.3 Communication Settings
4.3.1 LoRaWAN Settings (LoRaWAN® Version Only)
Go to Device > Setting > LoRaWAN Settings of ToolBox App to configure join type, App EUI, App Key and other information. You can also keep all settings by default.
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Parameters

Description

Device EUI

Unique ID of the device which can also be found on the label.

App EUI

Default App EUI is 24E124C0002A0001.

Application Port The port used for sending and receiving data, default port is 85.

Join Type

OTAA and ABP mode are available.

Application Key Appkey for OTAA mode, default is 5572404C696E6B4C6F52613230313823.

Device Address DevAddr for ABP mode, default is the 5th to 12th digits of SN.

Network Session Nwkskey for ABP mode, default is 5572404C696E6B4C6F52613230313823.
Key

Application Session Key

Appskey for ABP mode, default is 5572404C696E6B4C6F52613230313823.

LoRaWAN Version V1.0.2, V1.0.3 are available.

Work Mode

It’s fixed as Class A.

RX2 Data Rate RX2 data rate to receive downlinks.

RX2 Frequency RX2 frequency to receive downlinks. Unit: Hz

Channel

Enable or disable the frequency to send uplinks.

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If frequency is one of CN470/AU915/US915, enter the index of the channel that you want to enable and make them separated by commas. Examples: 1, 40: Enabling Channel 1and Channel 40 1-40: Enabling Channel 1 to Channel 40 1-40, 60: Enabling Channel 1 to Channel 40 and Channel 60 All: Enabling all channels Null: Indicates that all channels are disabled

Spread Factor Confirmed Mode
Rejoin Mode

If ADR is disabled, the device will send data via this spread factor. If the device does not receive ACK packet from network server, it will resend data once. Reporting interval 35 mins: the device will send a specific number of LinkCheckReq MAC packets to the network server every reporting interval or 2*reporting interval to validate connectivity; If there is no response, the device will re-join the network. Reporting interval > 35 mins: the device will send a specific number of

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LinkCheckReq MAC packets to the network server every reporting interval to

validate connectivity; If there is no response, the device will re-join the

network.

Set the number of When rejoin mode is enabled, set the number of LinkCheckReq packets sent.

packets sent Note: the actual sending number is Set the number of packets sent

ADR Mode

Allow network server to adjust datarate of the device.

Tx Power

Transmit power of device.

Note:

  1. Please contact sales for device EUI list if there are many units.

  2. Please contact sales if you need random App keys before purchase.

  3. Select OTAA mode if you use Milesight IoT cloud to manage devices.

  4. Only OTAA mode supports rejoin mode.

4.3.2 Application Mode Settings (NB Version Only)
Go to Device > Setting > Application Mode Settings of ToolBox App to configure the application mode and server information.

Parameters Application Mode AWS
Server Address CA File
Client Certificate

Description Select from AWS, TCP, UDP, and MQTT.
Fill in the AWS server domain name which the data sends to. Import the CA.crt file. Import the client certificate.

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Client Key TCP/UDP
Server Address Server Port
MQTT Broker Address Port
Client ID
User Credentials Enable
Username Password TLS
Enable Protocol CA File Client Certificate Client Key

Import the client key.
Fill in the TCP/UDP server address (IP/domain name). Fill in the TCP/UDP server port. Range: 1-65535.
Fill in MQTT broker address to receive data. Fill in MQTT broker port to receive data. 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.
Enable user credentials. The username used for connecting to MQTT broker. The password used for connecting to MQTT broker.
Enable the TLS encryption in MQTT communication. It’s fixed as TLS v1.2. Import the CA.crt file. Import the client certificate. Import the client key.

4.4 Advanced Settings
4.4.1 Calibration Settings
Go to Device > Setting > Calibration Settings to enable calibration. EM400-MUD supports two calibration types. Numerical Calibration: users can define calibration value to correct every distance.

Measure Outlier Calibration: users can define either outlier range or value When the device 13

distance value exceeds the outlier range (or range) comparing to last value, the device will measure the distance again.
4.4.2 Threshold Settings
Go to Device > Setting > Threshold Settings to enable the threshold settings and input the distance threshold. EM400-MUD will detect whether the distance reaches the threshold according to collecting interval. If threshold is triggered, it uploads the current data once instantly. Note: threshold setting is only for bin mode and standard mode.

Parameters

Description

Collecting interval to detect distance, this should be smaller than or equal Collecting Interval
to reporting interval.

Threshold Dismiss When the collected value changes from outside the threshold to within the

Report

threshold, a threshold release packet will be reported.

4.5 Maintenance
4.5.1 Upgrade
1. Download firmware from Milesight website to your smartphone.

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2. Open Toolbox App, go to Device > Maintenance and click Browse to import firmware and upgrade the device. Note: 1) Operation on ToolBox is not supported during a firmware upgrade. 2) Only Android version ToolBox supports the upgrade feature.
4.5.2 Backup
EM400-MUD supports configuration backup for easy and quick device configuration in bulk. Backup is allowed only for devices with the same model and frequency band. 1. Go to Template page on the App and save current settings as a template. You can also edit the template file. 2. Select one template file which saved in the smartphone and click Write, then attach to another device to write configuration.
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Note: Slide the template item left to edit or delete the template. Click the template to edit the configurations.
4.5.3 Reset to Factory Default
Please select one of following methods to reset device: Via Hardware: Hold on power button (internal) for more than 10s. Via ToolBox App: Go to Device > Maintenance to click Reset, then attach smartphone with NFC area to device to complete reset.
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5. Installation
1. Drill two holes on the container cover according to the location of device mounting holes. 2. Put the device under container cover and align the holes in order to perfectly screw the bolts into the holes from the other side of the cover.
Besides, the device can also be fixed by two M4 mounting screws and wall plugs.
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Installation location: In order to provide the best data transmission, please ensure the device is deployed within
the signal range of the LoRaWAN® gateway or base station and keep it away from metal objects and obstacles. The device must be placed in a horizontal position above the detected object so that it has a clear path to the object. The device should be installed at least 30cm away from the side-wall without obstructions blocking the ultrasonic signal. If the device needs to be installed on the side wall, please ensure the ultrasonic horn is away from the side wall.

When EM400-MUD is in waste bin mode, place the device in the center of waste bin mode and here are some recommended sizes of waste bins: when the height is 88cm, the minimum radius should be 24cm.

6. Communication Protocol

For decoder examples please find files on https://github.com/Milesight- IoT/SensorDecoders.
6.1 LoRaWAN® Version

All data are based on following format (HEX), the Data field should follow little-endian:

Channel1 Type1 Data1 Channel2 Type2 Data2 Channel 3 …

1 Byte 1 Byte N Bytes 1 Byte 1 Byte M Bytes 1 Byte

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6.1.1 Uplink Data

Channel

Type

01(Protocol Version)

09 (Hardware Version)

0a (Software Version) ff
0b (Power On)

0f (Device Type) 16 (Device SN)

01

75(Battery Level)

03

67 (Temperature)

04

82 (Distance)

05

00 (Device Position)

83

67(Temperature)

84

82(Distance)

Description 01=>V1 01 40 => V1.4 01 14 => V1.14 Device is on 00: Class A, 01: Class B, 02: Class C 16 digits UINT8, Unit: % INT16, Unit: °C INT16, Unit: mm 00: Normal (horizontal offset angle < 20°) 01: Tilt (horizontal offset angle 20°) Temperature (2 Bytes) + Alarm Status(1 Byte) Temperature: unit — °C Alarm Status: 00 -Alarm dismiss 01 -Alarm Distance (2 Bytes) + Alarm Status (1 Byte) Distance: unit — mm Alarm Status: 00 -Alarm dismiss 01 -Alarm

Examples: 1. Device information: report once whenever join the network.

ff0bff ff0101 ff166329c42503920003 ff090100 ff0a0101 ff0f00

Channel ff
Channel ff
Channel ff

Type 0b
(Power On) Type 16
(Device SN) Type
0a(Software version)

Value ff
(Reserved) Value
6329c425 03920003
Value 0101 (V1.1)

Channel ff
Channel ff
Channel ff

Type 01
(Protocol Version) Type 09
(Hardware version) Type 0f
(Device Type)

Value
01 (V1)
Value 0100 (V1.0) Value
00 (Class A)

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2. Periodic uplink: report according to reporting interval.

017564 0367f800 04820101 050000

Channel

Type

Value Channel

Type

75

67

01

64 => 100% 03

(Battery)

(Temperature)

Channel

Type

04

82 (Distance)

Value 01 01 =>
01 01 =257mm =0.257m

Channel

Type

05

00 (Device Position)

Value f8 00 => 00 f8
= 248 * 0.1 =24.8 °C Value
00=Normal

3. Distance Threshold: report when distance reaches the threshold or returns back to normal value.

8482330701

Channel 84

Type 82
(Distance)

Value Distance: 33 07 =>07 33 = 1843mm = 1.843m
Alarm Status: 01= Alarm

4. Temperature Threshold: report when the abrupt change of temperature is greater than 5 °C.

8367220101

Channel 83

Type 67
(Temperature)

Value Temperature: 22 01 =>01 22 = 290 * 0.1 = 29°C
Alarm Status: 01= Alarm

6.1.2 Downlink Commands
EM400-MUD supports downlink commands to configure the device. Application port is 85 by default.

Channel

Type

Description

10 (Reboot)

ff (Reserved)

03 (Set Reporting Interval) 2 Bytes, unit: s

71 (Set Device Mode)

00 = Standard Mode; 01 = Bin Mode; 02 = Parking Lot Mode

3e (Set Tilt & Distance Switch) 00 = Disable; 01 = Enable ff
56 (Set Ultrasonic Distance 00 = Disable; 01 = Enable
Sensor)

9 Bytes,

06 (Set Threshold Alarm)

CTRL(1B)+Min(2B)+Max(2B)+00000000(4B)

CTRL:

20

70 (Set Height Threshold in Parking Lot Mode)
77 (Set Installation Height)

Bit2~Bit0: 000-disable 001-below 010-above 011-within below or above Bit5~Bit3: 001-Standard Mode 010-Bin Mode Bit6=0 Bit7: 0 – disable threshold dismiss report 1 – enable threshold dismiss report
2 Bytes, unit: mm
2 Bytes, unit: mm

Example: 1. Set reporting interval as 20 minutes.

ff03b004

Channel ff

Type 03 (Set Reporting Interval)

Value b0 04 => 04 b0 = 1200s = 20 minutes

2. Reboot the device.

Channel ff

Type 10 (Reboot)

ff10ff

Value ff (Reserved)

3. Set the device as standard mode.

ff7100

Channel ff

Type 71 (Set Device Mode)

Value 00 = Standard Mode

4. Enable “Tilt & Distance Switch” feature.

ff3e01

Channel ff

Type 3e (Set Tilt & Distance Switch)

Value 01 = Enable

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5. When the distance is below 20cm or above 80cm, the sensor will send threshold alarm.

ff3e 8c c800 2003 0000 0000

Channel

Type

ff

06 (Set Threshold Alarm)

Value CTRL: cc=10 001 100 100=below or above 001=standard mode 10=enable threshold dismiss
report Min: c8 00 => 00 c8 = 200 mm
= 20 cm Max: 2003 => 03 20 = 800 mm
= 80cm

6. Set the height threshold in parking lot mode as 0.03m.

ff701e00

Channel ff

Type 70 (Set Height Threshold in
Parking Lot Mode)

Value 1e 00 => 00 1e =30mm =0.03m

7. Set the installation height as 4.5m.

ff779411

Channel ff

Type 77 (Set Installation Height)

Value 94 11 => 11 94 =4500mm =4.5m

6.2 NB Version
6.2.1 AWS/MQTT Topics

When the device is connected to AWS/MQTT server, the bi-directional communication uses different topics.

Topic

Content

em/[SN]/status

Receive periodic reports, threshold alarms, etc.

em/[SN]/cmd/update

Send downlink commands

Receive success ACK of downlink commands

em/[SN]/cmd/update/accepted

Note: users need to send downlink command to enable ACK feature first.

6.2.2 Uplink Data
All data are based on following format (HEX):

22

Start
02 SN 16 Bytes

ID
0001 IMEI 15 Bytes

Packet Length 2 Bytes
IMSI 15 Bytes

FLAG
00 ICCID
20 Bytes

Frame Protocol Software Hardwar

Counter Version

Version e Version

0000

01

4 Bytes 4 Bytes

Signal Data Length Data1

1 Byte

2 Bytes

N Bytes

Example:

02 0001 005f 00 0000 01 30313031 30313030

36373438443131323930313230303033 383638353038303631393234353133

343630303833383833383036363836

3839383630346238313032326330343536363836 10 000E

01750103677D000482FDFF050000

Type

Content

Start

02

ID

0001

Packet Length

00 5f=95 bytes

FLAG

00

Frame Counter

0000

Protocol Version

01=V1

Software Version

30 31 30 31 => 0101=V1.1

Hardware Version

30 31 30 30 => 0100=V1.0

36 37 34 38 44 31 31 32 39 30 31 32 30 30 30 SN
33=>6748d11290120003

IMEI

38 36 38 35 30 38 30 36 31 39 32 34 35 31 33 =>868508061924513

IMSI

34 36 30 30 38 33 38 38 33 38 30 36 36 38 36 => 460083883806686

ICCID

38 39 38 36 30 34 62 38 31 30 32 32 63 30 34 35 36 36 38 36 => 898604b81022c0456686

Network Signal

10=>16 asu

Data Length

0e=>14 Bytes

Data

See details below

Data part is based on Channel+Type+Data, the Data field should follow little- endian:

Channel

Type

Description

01

75(Battery Level) UINT8, Unit: %

03

67 (Temperature) INT16, Unit: °C

04

82 (Distance)

INT16, Unit: mm

00: Normal (horizontal offset angle < 20°)

05

00 (Device Position) 01: Tilt (horizontal offset angle 20°)

23

Byte 1-4: latitude*1000000

Byte 5-8: longitude*1000000

Byte 9: motion status,

06

88 (Location)

20=unknown, 21=start moving, 22=in motion,

23=stop moving

Note: If the device fails to get GNSS data,

the latitude or longitude will show FFFFFFFF.

Temperature (2 Bytes) + Alarm Status(1

Byte)

Temperature: unit — °C

83

67(Temperature)

Alarm Status:

00 -Alarm dismiss

01 -Alarm

Distance (2 Bytes) + Alarm Status (1 Byte)

Distance: unit — mm

84

82(Distance)

Alarm Status:

00 -Alarm dismiss

01 -Alarm

Examples: 1. Periodic uplink: report according to reporting intervalcumulative numbers (30 mins12 by default) when the device is stationary.

017564 0367f800 04820101 050000

Channel 01
Channel 04

Type 75
(Battery) Type
82 (Distance)

Value Channel

64 => 100% 03

Value 01 01 =>
01 01 =257mm =0.257m

Channel 05

Type 67
(Temperature) Type
00 (Device Position)

Value f8 00 => 00 f8
= 248 * 0.1 =24.8 °C Value
00=Normal

2. GNSS uplink: report when positioning setting is enabled and the device is in motion.

050001 068873c177019cff080722

Channel 05

Type 00
(Device

Value 01=Tilt

Channel 06

Type 88(Locati
on)

Value Latitude: 73c17701=>01 77 c1 73=24625523/1000000=24.62

24

Position)

5523 Longitude: 9cff0807=>07 08 ff 9c=118030236/1000000=118.
030236 22=in motion

3. Distance Threshold: report when distance reaches the threshold or returns back to normal value. If the threshold triggering time is close to periodic report time, it will send with periodic uplink.

8482330701

Channel 84

Type 82
(Distance)

Value Distance: 33 07 =>07 33 = 1843mm = 1.843m
01= Alarm

4. Temperature Threshold: report once when the abrupt change of temperature is greater than 5 °C.

8367220101 0688FFFFFFFFFFFFFFFF20

Channel 83

Type
67 (Temperatu
re)

Value Temperature: 22 01 =>01 22 = 290 * 0.1
= 29 °C 01= Alarm

Channel 06

Type
88(Locati on)

Value
Latitude/longitude : FFFFFFFF 20=unknown

6.2.3 Downlink Commands
EM400-MUD supports downlink commands to configure the device. Note that it can only receive downlink commands within the 10s after sending uplink packets.

Channel

Type

Description

10 (Reboot)

ff (Reserved)

03 (Reporting Interval)

4 Bytes, unit: s

71 (Device Mode)

00 = Standard Mode; 01 = Bin Mode

3e (Tilt & Distance Switch) 00 = Disable; 01 = Enable

a0 (Position Setting)

00 = Disable; 01 = Enable

ff

5 Bytes,

58 (Duration of Motion and

Byte 1: duration of motion, unit: s

Stationary)

Byte 2-5: duration of stationary, unit: s

5 Bytes,

8e (Motion Report Interval) Byte 1: 00 = Disable; 01 = Enable

Byte 2-5: report interval, unit: s

25

2 Bytes,

9e (Cumulative Numbers)

Byte 1: 00 = Disable; 01 = Enable

Byte 2: Cumulative numbers

9f (ACK of Downlink Command) 00 = Disable; 01 = Enable

9 Bytes,

CTRL(1B)+Min(2B)+Max(2B)+00000000 (4

B)

CTRL:

Bit2~Bit0:

000-disable

001-below

010-above

06 (Set Threshold Alarm)

011-within

100-below or above

Bit5~Bit3:

001-Standard Mode

010-Bin Mode

Bit6=0

Bit7:

0 – disable threshold dismiss report

Example: 1. Set reporting interval as 20 minutes.

1 – enable threshold dismiss report

ff03b0040000

Channel ff

Type 03 (Set Reporting Interval)

Value b0 04 00 00 => 00 00 04 b0 = 1200s = 20
minutes

2. Reboot the device.

Channel ff

Type 10 (Reboot)

ff10ff

Value ff (Reserved)

3. Set the device as standard mode.

ff7100

Channel ff

Type 71 (Set Device Mode)

Value 00 = Standard Mode

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4. When the distance is below 20cm or above 80cm, the sensor will send threshold alarm.

ff3e 8c c800 2003 0000 0000

Channel

Type

ff

06 (Set Threshold Alarm)

Value CTRL: cc=10 001 100 100=below or above 001=standard mode 10=enable threshold dismiss
report Min: c8 00 => 00 c8 = 200 mm
= 20 cm Max: 2003 => 03 20 = 800 mm
= 80cm

5. Set duration of motion to 50s and duration of stationary to 180s.

ff5832b4000000

Channel ff

Type
58(Duration of Motion and Stationary)

Value Duration of motion: 32=50s Duration of stationary: b4 00 00 00=00
00 00 b4=180s

-END-

27

References

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