ETung MD-620 DTU Manuale utente

MD-620 DTU User Manual

eTung Technology Co. Ltd

2nd Floor Building 3, Beike Industrial Park, No.7 Feng Xian Mid Road,

Haidian Dist. Beijing

TEL:4008-909-611 FAX:010-64857815

Website: www.etungtech.com.cn

MD-620 User Manual

Table of Contents

1. Product Introduction .......................................................................................................3

1.1 Brief Introduction .........................................................................................................3

1.2 Product Outlook ............................................................................................................4

1.3 Standard Accessories..................................................................................................5

1.4 Dimension........................................................................................................................7

1.5 Working Mechanism ....................................................................................................7

1.6 Specifications .................................................................................................................9

1.6.1 Technical Parameters......................................................................................9

1.6.2 Indicator Light Description..........................................................................11

1.6.3 Terminal Interface Definition .....................................................................12

1.7 Technical Advantages ...............................................................................................12

1.8 Typical Usecases.........................................................................................................13

2. Device Configurations...................................................................................................15

2.1 Configurations..............................................................................................................15

2.1.1 Preparation........................................................................................................15

2.1.2 Configuring MD-620 ......................................................................................15

2.2 Configuration Parameters .......................................................................................22

2.3 Restore to Default ......................................................................................................26

2.4 Firmware Update ........................................................................................................26

2.5 Remote Configurations.............................................................................................28

Appendix 1: Usecase of Point to Data Center Testing......................................................35

Appendix 2: Usecase of Vircom Testing with eYun platform .........................................40

Appendix 3: Building Data Center ...........................................................................................45

Appendix 4: Data Format of GPS Packets.............................................................................48

Appendix 5: DTU’s AT Commands at Serial Port................................................................50

Appendix 6: DTU SMS Mode and SMS Data Format.........................................................54

Appendix 7: eTung RTU MODBUS Protocol Overview.......................................................56

MD-620 User Manual

1. Product Introduction

This chapter mainly introduces the outlook, accessories, specifications and

mechanism of MD-620.

1. Brief Introduction

2. Product Outlook

3. Accessories

4. Dimension

5. Working Mechanism

6. Specifications

7. Technical Advantages

8. Typical Usecases

1.1 Brief Introduction

MD-620 is a 4G DTU produced by eTung, with positioning functionality

and industry level. It integrates industrial BDS/GPS dual-module

positioning module and 4G module. The 4G module supports all

2G/3G/4G network modes from China Mobile, China Telecom, and

China Telecom. The BDS/GPS dual-module positioning module

supports dual-system corporate positioning function, and its

outstanding positioning function especially fits vehicle positioning and

meteorological sounding fields.

MD-620 has flexible terminal interface. The terminal interface

supports RS232 and RS485 serial ports at the same time, and

supports power and DI/DO. MD-620 has MODBUS RTU functionality,

and supports one DI and one DO, and can be used to control switches

remotely or to alarm remotely.

MD-620 can connect quickly with devices such as PLC, IPC, appliances

and RTU, and transfer data via GPRS network from the device that

connects with MD-620 to a host on the internet, thus implements

remote and transparent data transfer. At the same time, it can report

GPS information for the place where the remote device is to the host

and implements positioning devices.

MD-620 User Manual

MD-620 has positioning and 4G data communication/processing

functionalities. It’s small, durable, and stable; it’s easily installed. It

can be widely used in industries such as construction and

transportation. It is especially useful for tower crane monitoring and

heavy machinery management, and can also be used in areas such as

taxi operation management, transport vehicle management, special

vehicle management, and vehicle lease management.

1.2 Product Outlook

Figure 1-1: MD-620 side view 1

MD-620 User Manual

Figure 1-2: MD-620 side view 2

1.3 Standard Accessories

Figure 1-3: 4G sucking antenna

MD-620 User Manual

Figure 1-4: GPS antenna

Figure 1-5: Power supply

MD-620 User Manual

1.4 Dimension

Figure 1-6: MD-620 dimension

1.5 Working Mechanism

MD-620 User Manual

Figure 1-7: MD-620 working mechanism

After configuring IP address (or domain name) and port of the data

center in MD-620, it dials in 4G wireless network to access the internet;

then it establishes connection to the preconfigured IP address and

port(i.e. mServer's listening port). On the other hand, the user

software system connects to the mServer via virtual serial port, thus

implements the wireless and bi-directional data communication

between user device and user software system.

MD-620 has RS232 and RS485 serial ports, and the two serial ports

can be used at the same time. At the same time MD-620 has MODBUS

RTU functionality and can be MODBUS slave. And MD-620 embeds

BDS/GPS dual-module positioning model, and can get positioning

information via satellites. So, there will be four data channels between

MD-620 and data center, that are used to transmit RS232 serial port,

RS485 serial port, MODBUS RTU and GPS data, respectively. The four

channels are not required to use at the same time, and each channel

can be set to enable or disable, according to project’requirements. At

data center, each channel has a virtual IMEI derived from MD-620’s

IMEI. For example, MD-620’s IMEI is 240305001234567, then the

four channels’virtual IMEIs are:

RS232: 240305001234567

RS485: 240350011234567

GPS: 240305021234567

MODBUS: 240305031234567

Then after MD-620 connects to data center, there will be at most four

virtual online terminals at data center that are associated with the

MD-620, each terminal matches one data channel, and the IMEIs are

MD-620 User Manual

defined as shown above.

As a DTU, MD-620 connects to user’s serial device via its serial line

terminal. After MD-620 connects to mServer, user’s serial data acquisition

software connects to mServer via i.e. virtual serial port, and maps to the

terminal corresponding to RS232 channel (or RS485 channel). This way

implements the wireless and bi-directional data transmission between

user’s serial device and serial data acquisition software.

As a RTU, MD-620 supports MODBUS serial link protocol. MODBUS is a

master/slave protocol: the master station sends requests to the slave

station, and processes responses from the slave station; the slave station

receives requests from the master station, process the requests and send

responses to the master station. MD-620 RTU acts as the MODBUS slave

station, and software supporting MODBUS protocol acts as master station

and connects to mServer through DCC interface or virtual serial port, and

maps to the terminal corresponding to the MODBUS channel; thus the

software can send MODBUS data requests that meets with eTung’s RTU

MODBUS protocol, MD-620 RTU receives requests and returns MODBUS

responses. This way MODBUS master can monitor and control the status

of devices that connect to MD-620 RTU as MODBUS slave.

At the same time, according to user’s configuration, after MD-620

successfully connects to mServer, it can proactively upload GPS

information, or reactively response to GPS information query. GPS

data query software connects with mServer via interfaces such as DCC

or virtual serial port, and maps to the terminal corresponding to GPS

channel. Then the software can receive positioning information from

MD-620 via GPS channel; and the software can also request

positioning information by sending GPS query command via GPS

channel.

1.6 Specifications

1.6.1 Technical Parameters

Basic Parameters

Power Supply: +5 ~ +36V wide range of voltage input, with

terminal interface

Data interface: RS232 and RS485, 3.81mm terminal interface

Network:

2G: GSM/GPRS/EDGE/CDMA2000 1x

MD-620 User Manual

3G: UMTS/WCDMA/HDSPA/HSPA+/TD-SCDMA/

CDMA2000 EVDO

4G: TDD-LTE/FDD-LTE

Frequency:

TDD-LTE B38/B39/B40/B41

FDD-LTE B1/B2/B3/B4/B5/B8/B17/B20

UMTS/HSDPA/HSPA+ B1//B2/B5/B8

TD-SCDMA B34/B39

CDMA2000 1x/EVDO BC0

GSM/GPRS/EDGE 900/1800 MHz

Working current: 170mA@+12V DC

Standby current: 100mA@+12V DC

BDS/GPS module: anti-interference GNSS navigation and

position module

BDS/GPS module frequency: BDS B1, GPS L1

BDS/GPS position precision: 2.5m CEP (BDS/GPS dual system),

2.0m CEP (SBAS)

RTU DI: optocoupler input

RTU DO: drive capability 3A/250V AC, 3A/30V DC

Temperature: -40ºC ~ +85ºC

Humidity: 95%@+40ºC

Dimensions: 103x64x24mm (excluding antenna and handle)

Communication

Adjustable baud rate on data interface

Support standard TCP/IP protocol with both TCP and UDP

Adjustable heart-beat interval and time-out value

Support always online

Support SMS and ringing tone wakeup(wakeup online)

Support Address-IMEI Mapping to save wireless bandwidth

Adjustable GPS data report time interval

Support AT command to query GPS data

Stability

Host CPU: 32-bit ARM processor

Built-in soft/hard watch dog

Built-in TCP/IP protocol stack

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