Harxon HX-DU2601D-900 Manual de usuario

[HX-DU2601D-900 Operating Instructions]

HX-DU2601D-900

Frequency-Hopping Radio

Operating Instructions

Version: V1.0

FCC ID: 2ACRAHX-DU2601D-900

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[HX-DU2601D-900 Operating Instructions]

Contents

1PREPARATORY WORK ..................................................................................................................................................3

2OPERATION STEPS ......................................................................................................................................................... 3

2.1 ENVIRONMENT SETUP ................................................................................................................................................... 3

2.2 POWERING UP THE BASEBOARD BY SWITCHING ON THE POWER SUPPLY ......................................................................4

2.3 MODIFYING RADIO PARAMETERS.................................................................................................................................. 4

3APPENDIXES.....................................................................................................................................................................5

3.1 LIST OF AT COMMANDS OF THE RADIO .........................................................................................................................5

3.2 HANDLING OF ABNORMALITIES................................................................................................................................... 10

3.3 PPCOMMUNICATION EXAMPLE OF THE FREQUENCY-HOPPING RADIO......................................................................... 11

3.4 PMPCOMMUNICATION EXAMPLE OF THE FREQUENCY-HOPPING RADIO ..................................................................... 12

4UPDATE OF THE BUILT-IN RADIO............................................................................................................................ 13

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[HX-DU2601D-900 Operating Instructions]

1Preparatory Work

DC power supply (two units, with the maximum current of 2A), power line (two pieces), serial port line or

USB-to-serial port line (two pieces), computer (one unit), and serial port debugging assistant (sscom32);

2Operation Steps

2.1 Environment Setup

First, connect the power line of the baseboard, with supply voltage 8-30 V(the supply voltage is usually chosen to

be 12 V). Then, set the configuration switch to the VCC terminal (left). Next, connect the baseboard to the

computer with RS232 DB9 serial port line or USB-to-serial port line (Special notes: Connect the baseboard to

the computer through RS232 data port; this port has a level of 232 rather than TTLlevel). Open the serial

port debugging assistant (sscom32), select the serial port number, and configure the baud rate of the serial port to

be 115200, and correctly install the radio module antenna (frequency band: 902.6M-927.8M), as shown in the

figure below:

DC power supply

Power indicator light

RS232 (Data port)

RSSI indicator light

Receiving LED

Antenna interface

Sending

LED

Configuration switch

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[HX-DU2601D-900 Operating Instructions]

2.2 Powering Up the Baseboard by Switching on the Power Supply

After the power supply is switched on, the power indicator light is on. In the operating mode of the master

radio, LED TX indicator light flickers once two seconds on a PP (point to point) basis, and constantly flickers on

a PMP (point to multipoint) basis. In the operating mode of the slave radio, RSSI indicator light flickers like a

waterfall light before the synchronization of the master and the slave. Such RSSI indicator light stops flickering

when this synchronization is completed. This synchronization is indispensable for transmission of user data.

As data is sent, TX LED red indicator light illuminates; as data is received, RX LED green indicator light

illuminates (Remarks: The red indicator light replaces the green one temporarily since the latter does not

have enough luminance).

2.3 Modifying Radio Parameters

(1) First, set the configuration switch to the right (close to the silk-screen GND terminal) or send the character

string "+++" (pay attention to the sending method: Within one second before sending "+++", make sure that

no data is available; within one second after sending "+++", make sure that no data is available; no codes of

carriage returns and line feeds follow such character string sent), namely, the radio goes into the parameter

configuration mode (showing "NO CARRIER OK");

(2) Then, input the parameter modification command (see Appendix I "List of AT Commands of the Radio");

(3) After modifying a parameter, input the parameter saving command (AT&W); otherwise, that parameter is

not saved in the case of power failure;

(4) Finally, set the configuration switch to the left (silk-screen VCC terminal) or run the command ATA,

namely, allow the radio to work in a normal mode (other than AT command configuration state);

(5) Restart the radio.

Notes: (1) Any AT commands must be followed by carriage returns and line feeds (In the serial

port assistant tools, choose "Send the New Line". Sending the new line indicates that software

automatically adds two characters of carriage returns and line feeds); (2) if the current

configuration pin is grounded, sending "+++" and running the ATA command are invalid.

Page 4 of 16

[HX-DU2601D-900 Operating Instructions]

3Appendixes

3.1 List ofAT Commands of the Radio

Format of the AT command

Format of the parameter configuration command: ATS + register number = value + carriage return and line

feed; for example,ATS103=7

Format of the parameter query command: ATS + register number?+ carriage return and line feed; for

example, ATS103?

Remarks:

(1) After modifying the parameter by the AT command, surely save this parameter by the AT&W command;

(2) Black bold font indicates the ex-work default value;

(3) AT commands without special instructions apply to both the narrow band mode and the frequency-hopping

mode.

The first category of commands: specialAT commands

(1) Parameter saving command

Send the command: AT&W+ carriage return and line feed

Set successful return to "OK".

Notes: If a user modifies the radio parameter, and desires to save it upon power failure, he must send the

parameter saving commandAT&W upon modification. Otherwise, such parameter will become missing

upon power failure.

(2) Display of the current working parameters of the radio

Send the command: AT&V+ carriage return and line feed

Set successful return to "OK".

After this command is executed, most parameters of the radio appear; for example:

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[HX-DU2601D-900 Operating Instructions]

(3) Display of the current address list of the slave

Send the command: ATT?+ carriage return and line feed

The currently supported address information of the slave is displayed, for example:

Address

Sequence

number

(4) Configuration of the address list of the slave

Send the command: ATTn=xxx+ carriage return and line feed

Configure the slave address of the currently designated sequence;

For example,ATT0 = 120, denoting that the slave address with the sequence number being 0 is 120.

Remarks: (1) Range of sequence numbers: 0-254. Range of slave addresses: 0-254. If the address is

configured to be 0, this indicates the deletion of the current slave node. (2) When the radio address is 255, no

address configuration is required. (3) This configuration command applies to the PMP master mode (the

address configuration does not help configure the slave address list from the slave mode terminal), but is not

appropriate for other modes. (4) You can query the slave address of the corresponding sequence number by

the command ATTn?;

The second category of commands: configuration of commonAT commands

(1) Modification of the operating mode

Send the command: ATS101=value+ carriage return and line feed

Set successful return to "OK".

Values are as follows:

0- denote the master.

1- denote the relay(not supported temporarily)

2- denote the slave.

Set successful return to "OK".

(2) Modification of the baud rate of serial port

Send the command: ATS102=value+ carriage return and line feed

Set successful return to "OK".

Values(bps) are as follows:

1-115200; 2-57600; 3-38400; 4-28800; 5-19200; 6-14400; 7-9600;

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[HX-DU2601D-900 Operating Instructions]

For example, ATS102=1, denoting that the serial port of the current radio has a communication baud rate of

115,200 bps.

(3) Modification of the RF baud rate

Send the command: ATS103=value+ carriage return and line feed

Set successful return to "OK".

1) In the frequency-hopping mode

Values(bps) are as follows:

0-19200,1-115200;2-172800;3-230000;7-38400;8-57600;

2) In the narrow band mode

Values(bps) are as follows:

0-4800; 1-8000; 2-9600; 3-16000; 4-19200;

(4) Modification of network ID (frequency-hopping mode)

Send the command: ATS104=value+ carriage return and line feed

Set successful return to "OK".

Range of values: 0-255. The valid value of network ID is related to the number N of frequency-hopping

channels. 900M-FH:N=64; 400M-FH:N=64; 840M-FH:N=16; 869M-FH:N=8. When the network ID value

is greater than or equal to N, the actual network ID is the modulovalue of N.

(5) Modification of the local address

Send the command: ATS105=value+ carriage return and line feed

Set successful return to "OK".

Range of values: 1-254

Remarks: The radio address is 255; the local address is, by default, configured to be 1 in the master mode,

and be 2 in the slave mode.

(6) Modification of the transmitting power

Send the command: ATS108=value+ carriage return and line feed

Set successful return to "OK".

Values are as follows:

H: 1W, M:1W, L:0.5W

Remarks: Only 840M and 869M support 2W, others support 1W at most.

(7) Modification of frequency-hopping interval (frequency-hopping mode)

Send the command: ATS109=value+ carriage return and line feed

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[HX-DU2601D-900 Operating Instructions]

Set successful return to "OK".

Values(ms) are as follows:

1-20ms; 2-30ms; 3-40ms; 4-50ms;

For example, ATS109=1, denoting that the radio changes the frequency point once every 20 MS.

(8) Query of frequency band range (this command supports query only)

Send the command: ATS128?+ carriage return and line feed

Set successful return to "OK".

Values are as follows:

1-900MHz Frequency Hopping (FH);

2-400MHz Frequency Hopping (FH);

3-840MHz Frequency Hopping (FH);

4-865MHz Frequency Hopping (FH);

(9) Modification of frequency band range

Send the command: CMD=HX+ carriage return and line feed

Set successful return to "PROGRAMMED OK".

Send the command: modem value + carriage return and line feed (Pay attention to one blank space after the

modem, for example, modem 1)

Set successful return to "PROGRAMMED OK".

Send the command: CMD MH+ carriage return and line feed

Set successful return to "OK".

Values are as follows:

1-900MHz Frequency Hopping (FH);

2-400MHz Frequency Hopping (FH);

3-840MHz Frequency Hopping (FH);

4-865MHz Frequency Hopping (FH);

(10) Network mode (frequency-hopping mode)

Send the command: ATS133=value+ carriage return and line feed

Set successful return to "OK".

Values are as follows:

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[HX-DU2601D-900 Operating Instructions]

0-Point to Multipoint (PMP);

1-Point to point (PP);

(11) Modification of the destination address

Send the command: ATS140=value+ carriage return and line feed

Set successful return to "OK".

Range of values: 1-255

Remarks: The radio address is 255; the local address is, by default, configured to be 1 in the master mode,

and be 2 in the slave mode.

The third category of commands: configuration ofAT commands to restore the ex-work default value in

various modes

1. AT&F1 (frequency-hopping mode)

High speed mode of the master on a PMP basis (Link rate=115200bps, Serial rate=115200), default

parameter configuration

2. AT&F2 (frequency-hopping mode)

High speed mode of the slave on a PMP basis (Link rate=115200bps, Serial rate=115200), default parameter

configuration

3. AT&F4 (frequency-hopping mode)

Low speed mode of the master on a PMP basis (Link rate=38400bps, Serial rate=115200), default parameter

configuration

4. AT&F5 (frequency-hopping mode)

Low speed mode of the slave on a PMP basis (Link rate=38400bps, Serial rate=115200), default parameter

configuration

5. AT&F6 (frequency-hopping mode)

High speed mode of the master on a PP basis (Link rate=115200bps, Serial rate=115200), default parameter

configuration

6. AT&F7 (frequency-hopping mode)

High speed mode of the slave on a PP basis (Link rate=115200bps, Serial rate=115200), default parameter

configuration

7. AT&F8 (frequency-hopping mode)

Low speed mode of the master on a PP basis (Link rate=38400bps, Serial rate=115200), default parameter

configuration

8. AT&F9 (frequency-hopping mode)

Low speed mode of the slave on a PP basis (Link rate=38400bps, Serial rate=115200), default parameter

configuration

Page 9 of 16

[HX-DU2601D-900 Operating Instructions]

3.2 Handling of Abnormalities

(1) The master and the slave fail to implement synchronization.

1) Fail to set the configuration switch to the left;

2) The antenna interface has poor contact;

3) The power supply has limited current or too small power;

4) It is recommended to power up the radio again from the configuration mode to the data mode.

(2) Failure to receive or send data

1) The baud rate of serial port is 115200 (8 data bits, stop bit: 1, without odd-even check);

2) The serial port tool have poor contact (if the USB-to-serial port is used, check whether the driver of the

USB-to-serial port is set up);

3) The serial port number is not correctly selected (ports No.1-9 are recommended);

(3) Attached figure of the serial port tool

Page 10 of 16

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