Hongdian Corporation
H7210 fast user guide
Website: www.hongdian.com
 Copyright 2004
Notice:
Copyright
The contents of the manual are protected by Chinese law, any
organization and/or person can not copy this manual or part of
contents without Shenzhen Hongdian Technologies Co., Ltd.
authorization in written.
Trademark
宏电
、
、Hongdian, GPRS DTU, CDMA DTU, MDTU, Wireless
DDN, Hongdian, Hongdian Technologies and Shenzhen
Hongdian are the logos and trademarks of Shenzhen Hongdian
Technologies Co., Ltd. The other company trademarks and
logos in this manual are owned by the owner, Hongdian does
not have the right for those trademarks and logos.
Hongdian
Contents
CHAPTER 1
INSTALLATION ..................................................................................... 3
2.1 GENERAL ..................................................................................................................... 3
2.2 INSTALLATION AND CABLE CONNECTION ...................................................... 3
2.4 GROUNDING ................................................................................................................ 7
2.5 POWER SUPPLY ......................................................................................................... 7
2.6 CHECK THE MOBILE NETWORK.......................................................................... 7
CHAPTER 2
DTU SETUP ............................................................................................. 8
3.1 SETUP CONNECTION ................................................................................................ 8
3.2 INITIAL CONFIGURATION ...................................................................................... 8
3.3 DTU CONFIGURATION (C) .................................................................................... 10
CHAPTER 3
AT EXPAND MODE ............................................................................. 13
APPENDIX: HYPERTERMINAL SETTING ................................................................ 13
Chapter 1
Installation
2.1 General
Attention:
Do not install H7210 GPRS/CDMA DTU or connect/disconnect its cable when it is power on.
2.2 Installation and Cable Connection
Measurement
H7210 DTU outside measurement and installation position:
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SIM
Open top SIM/UIM protection cover, and then insert SIM or UIM from left-top side.
SIM/UIM card conductors should face downside and the gap face to outside. The SIM/UIM
card also need to be inserted properly and then cove back the SIM/UIM protection cover in
order to prevent the SIM card from dropping out during shipping.
Slide the SIM card by your finger to take out the SIM/UIM card.
Voice
Antenna
SIM/UIM
Ground
Cascading/Config.
Attention:
H7210 DTU will not work and display “can not find SIM card” if you do not insert the SIM
card to the end position. In order to prevent this problem, please put back the SIM cover
after you insert the SIM card, and screw it tight.
User Data and Power Cable Installation
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H7210 DTU signals and power supply is connected by industrial class pluggable terminals,
3.5mm, 12Pin, and 14~24AWG outlet cable is recommended. Each line definition refers to
the following diagrams and tables. Also, you can find outlet cable definition table at top of
H7210 DTU cover.
As shown in the following diagrams and tables, peel off the cable end about 7mm () and
connect each terminal and cable (14~24AWG cable recommended. Make sure that you
have connected the terminals without any mistake.
7mm
14~24AWG
Attention:
The power cable should be connected correctly. We suggest double check before switch it
on. Wrong connections may destroy the equipment.
Power terminals: Pin 11 and Pin 12;
Here: Pin 11 is “GND”, Pin 12 is power input “Vin” (+7.5~+26VDC).
RS-232 signal definition
Pin
Signal
Description
1 DCD
Carrier Detection
2 RX
Receive Data
3 TX
Transmit Data
4 GPI
General Purpose Input
5 OFF
Power Off Control
6 GPO
General Purpose output
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5
7
8
9
10
11
12
RTS
CTS
RING
GND
GND
Vin
Request to Send
Clear to Send
Ring Signal
Ground
Ground
+7.5~26V DC Input
Current: 350mA@12V
RS-232 interface complies the standard RS-232 specification.
H7210F DTU RS-422 interface and power supply illustration:
H7710F DTU
RS-422 (User Side)
DCD 1
R- 2
R+ 3
GPI 4
OFF 5
GPO 6
T- 7
T+ 8
RING 9
GND 10
GND 11
+Vin 12
2 R3 R+
7 T8 T+
9 RING
5 GND
+Vin GND
H7210S DTU RS-485 interface and power supply illustration:
H7710S DTU
DCD
B(-)
A(+)
GPI
OFF
GPO
RING
GND
GND
+Vin
RS-485 (User Side)
1
2
3
4
5
6
7
8
9
10
11
12
2 B(-)
3 A(+)
9 RING
5 GND
+Vin GND
RS-422/485 signal definition
Pin
Signal
Description
1
2 T+/A(+)
Transmit Data
3 T-/B(-)
Transmit Data
4 GPI
General Purpose Input
5 OFF
Power Off Control
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A(+): RS-485 TX/RX
B(-): RS-485 TX/RX
6
6
7
8
9
10
11
12
GPO
RR+
RING
GND
GND
Vin
General Purpose Output
Receive Data
Receive Data
Ring Signal
Ground
Ground
+7.5~26V DC Input
Only RS-422
Only RS-422
Current: 350mA@12V
2.4 Grounding
To ensure a safe, stable and reliable H7210 DTU operation, DTU cabinet should be
grounded properly. Connect the H7210 DTU cabinet to site ground wire at the ground point
(refer to page 9 picture).
2.5 Power Supply
H7210 DTU is designed with advanced power management technologies; it can operate
standalone. The DC power is supplied via pluggable terminal Pin 11 (GND) and Pin 12 (Vin).
Detail definitions refer to above tables.
About Power Supply:
When H7210 GPRS DTU communicates with base station, surge current will exceed normal
current. Therefore, margins 5 times over normal current may be required for external
power supply.
Normally, H7210 DTU input power supply is +5~26VDC, in most cases, 12VDC/1A is
recommended. Power input of +5VDC can be ordered for specified application. Power
supply ripple should be less 300 mV.
2.6 Check the Mobile Network
Connect all signal and power cables, and double check it, connect antenna, insert a valid
SIM or UIM (depends your DTU type and network) and switch on power. H7210 DTU “PWR”
LED will light up. If “PWR” LED is flashing, it means the H7210 DTU is working normally. If
the “DATA” LED is flashing, it means there are data stream input/out over H7210 DTU data
port. If the “NET” LED lights up, it means that the H7210 DTU has found and logged on
mobile network.
Antenna should be connected before switch on, otherwise it may cause radio module
problem.
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Chapter 2
DTU Setup
Please ask our technical support engineer for management tool.
3.1 Setup Connection
H7210 DTU should be configured properly before putting into service. You can configure
and manage DTU parameters by connecting DTU to your serial port of your PC via a
configuration cable (you may need a RS485/232 convertor).
or H7071 Config. Cable
H7710 DTU
Serial Port
AC Adapter
3.2 Initial Configuration
The default serial port
Rate:
Bits:
Parity:
Stop Bits
Flow Control:
setting of DTU:
57600baud
8bit
None
1bit
None
Make sure the serial port is available then run the |Management Tools|, follow page will
shows:
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a. Enter configuration:
Keep this default setting and default password: admin
b. Connect DTU data cable to your PC first, but do not connect power cable. Then click
connect icon.
c. Connect DTU power cable before timeout, default timeout is 50 seconds. If connection
succeed, follow page will shows:
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Notice:
1.
No matter you changed DTU serial port connection (RTU connection) parameters or
not, you do not need change the baud rate in this tool, DTU still could connect. So in case
you forget DTU parameters, you may use this tool to re-config DTU.
2.
If you changed DTU password, you should change tool password before connection.
3.3 DTU Configuration (C)
After connection DTU succeed.
Common Parameters: set your own common parameters, make the config easily. If you are
not familiar with DTU products, you may ignore this option.
Query: inquire all DTU parameters.
Config: tick one parameter first, then you could config it, after config done, click this icon
to save setting into DTU.
Default: retrieve all parameter to default.
Reset: Reset DTU.

Some parameters need you input value, some could only chosen from
preset value, check its description for reference.
In a typical application, your PLC/RTU connect to DTU and regularly upload data to your
server. You need define follow parameters:
3.3.1 Cellular parameters
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This part defines all the cellular parameters. Please config it according to your
local operator settings.
This part of setting decides whether your DTU could connect internet.
3.3.2 RTU connection parameters
This part defines the serial port parameters, and you should set it according to your
RTU/PLC serial port setting.
This part decides whether your RTU/PLC could communicate with DTU, if you use a PC to
simulate and system works ok, but RTU/PLC do not work, usually you need adjust this part.
3.3.3 Channel parameters
DTU default support 4 channel, means it could send RTU/PLC data to 4 different server at
same time, you could set their parameters separately. If you only use one server to receive
data, do not set other channels, otherwise you may lost extra flow fee.
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a. Protocol to DSC: protocol DTU used to communicate with DSC, usually be TCP or UDP.
Please set it according to server end setting.
b. DSC IP: your server IP address, this IP should be public or a internal IP which in a same
private network with DTU.
c. DSC port: DTU will send data to this port, and server will listening to this port. Please set it
big then 5000 because in most of the county, port less than 5000 has been blocked.
d. DSC domain: you could use domain instead of IP, this value only available when DSC IP set
as 0.0.0.0
e. DTU local port: DTU communication port with PLC/RTU, cannot same as DSC port.
f. Heart beat packet interval: heart beat used to keep DTU always on line, DTU will regularly
send data to operator server, not your server to keep internet link available. If your
RTU/PLC will send data in a short interval, you could disable this function.
g. Define register packet: when enable DDP protocol, you could define register packet.
Please do not change other options without suggest of technical support.
About DDP protocol, a private protocol developed to enhance stability of communication
during GPRS network, similar to TCP, so when used TCP, no need to use this protocol. And
when enable this protocol, DTU is not a transparent communication, you need also enable
DDP protocol on server end.
3.3.4 Others
Other parameters should remain default. You could edit common parameters to easier the
next setting process.
When finished setting, save them and reboot DTU, If not entering config mode, DTU will
auto-running and working, no need manual intervention.
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Chapter 3
AT expand mode
When DTU is working, PC/PLC/RTU could input “+++” to enter AT expand
mode, in this mode you could use AT-like command to config DTU.
Appendix: HyperTerminal Setting
This annex introduce the Microsoft Windows operating system HyperTerminal setting for the H7210
DTU configuration.
1.
2.
3.
4.
COM Port Setting
Properties
Host System Encoding Method
ASCII Setting
1. COM Port Setting
By Clicking Windows “Accessories”->”Communications”->”HyperTerminal” to create a
HyperTerminal. Refer to below picture to continue the settings.
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The COM port parameters should be specified. Select COM number (i.e. COM2), Bites per
second, Data bits, Parity, Stop bits and Flow control.

Notice: “Flow control” should be set to “None”.
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2. Properties
Start the created H7000 HyperTerminal connection. Click “File”->“Properties” menu, click
“Settings” tab, set it as show as the picture.
3. Host System Encoding Method
Click “Input Translation” button, set host system encoding method.
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4. ASCII Setup
Click “ASCII Setup” button, set ASCII parameters.
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