SENA TECHNOLOGIES PROMISD205OA Bluetooth RS232C Serial Adaptor User Manual

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Document ID	677100
Application ID	ZxeELhuVBXIl2KKU/a5QUw==
Document Description	Users Manual
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Permanent Confidential	No
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Document Type	User Manual
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Filesize	39.73kB (496626 bits)
Date Submitted	2006-07-05 00:00:00
Date Available	2006-07-05 00:00:00
Creation Date	2006-06-08 14:16:47
Producing Software	Acrobat Distiller 6.0 (Windows)
Document Lastmod	2006-06-15 20:27:43
Document Title	untitled

USER MANUAL
Version 2.0.2 (2006.06.07)
Promi SD™
205-OA
Bluetooth RS232C Serial Adaptor
by Bluetooth
Enabling Wireless Serial Communications
FCC CONCERNS
FCC Compliance Statement
This device complies with part 15 of the FCC Rules. Operation
is subject to the following two conditions:
(1) This device may not cause harmful interference, and
(2) This device must accept any interference received,
including interference that may cause undesired operation.
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant
to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference in a residential installation.
This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful interference to radio communications. However, there is
no guarantee that interference will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be determined by turning the equipment off
and on, the user is encouraged to try to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver
is connected.
- Consult the dealer or an experienced radio/TV technician for help.
RF Exposure Statement:
The equipment complies with FCC RF radiation exposure limits set forth for an uncontrolled environment
This device and its antenna must not be co-located or operating in conjunction with any other antenna or
transmitter.
Do not
Any changes or modifications to the equipment not expressly approved by the
party responsible for compliance could void user’s authority to operate the
equipment.
Promi SD205-OA User Manual – Table of Contents
z Promi SD205-OA
SD205-OA
Bluetooth Serial Adapter
Part Number
Promi SD205-OA
Description
External type wireless serial adapter with dip switch
Bluetooth Power Class
Class1
Frequency range
2402 MHz~2480 MHz
Number of channel
79ch
Modulation Method
GFSK
Communication Method
Half Duplex
RF Range
Up to 100m
Operating Power range
DC5V / 2A (AC100~240V / 50~60Hz)
Operating Temperature range
-20 ~ +55°C
Operating Humidity range
95%
Power Connector
DC plug or 6 pin
Serial connector
Male DB9
Serial Interface
RS-232
Serial Data Rate
1,200 ~ 230,400 bps
Dip switch
Yes (4 slots)
Profile
Serial Port Profile
Applicable Antenna
Helical Antenna, Dipole Antenna, Patch Antenna
Dimensions (HÂŻWÂŻD)
62.5x31.2x16.3
Includes
Helical Antenna, DC power cable
Promi SD205-OA User Manual – Table of Contents
Table of Contents
1. Getting Started
Components
--------------------------------------------------------4
Assembly
------------------------------------------------------------- 4
Locating the Controls
------------------------------------------ 5
2. Configurations
Operation Modes
------------------------------------------------- 7
LED Indicators
-----------------------------------------------------8
Serial Ports
---------------------------------------------------------- 8
Reset to Factory Defaults
------------------------------------- 8
Terminal Program
------------------------------------------------ 9
Dip Switch
------------------------------------------------------------- 10
Pairing Button
----------------------------------------------------------10
3. Connections
RS232 Interface
Pin Assignment
Power Supply
--------------------------------------------------- 13
---------------------------------------------------- 14
------------------------------------------------------15
4. Specifications
Bluetooth
----------------------------------------------------------- 17
Serial Interface
--------------------------------------------------- 17
Power
---------------------------------------------------------------- 17
Mechanical Dimensions
---------------------------------------- 17
Environmental
--------------------------------------------------- 17
Default Antenna
-------------------------------------------------18
Wireless Coverage
---------------------------------------------- 18
Appendix A. AT Commands
Terminology
------------------------------------------------------- A-2
Command Description
--------------------------------------- A-3
Promi SD205-OA User Manual – 1. Getting Started
1. Getting Started
z Components
z Assembly
z Locating the Controls
Promi SD205-OA User Manual – 1. Getting Started
Components
Helical Antenna
Promi SD205-OA
DC 5V Power Cable
Fig.1-1 Components of SD205-OA
Assembly
※ Antenna is left-hand threaded.
※ Use of non-authorized power
adapter is not recommended.
Fig.1-2 Assembly of SD205-OA
Promi SD205-OA User Manual – 1. Getting Started
Locating the Controls
Reset Button
Front Panel †
Pairing Button
Power Jack
Back Label ‡
Power Switch
Fig.1-3 Locating the Controls
Promi SD205-OA User Manual – 2. Configurations
2. Configurations
z Operation Modes
z LED Indicators
z Serial Ports
z Reset to Factory Defaults
z Terminal Program
z Dip Switch
z Pairing Button
Promi SD205-OA User Manual – 2. Configurations
Operation Modes
In addition to the serial port configurations such as bit/second, data bit, parity, stop bit, flow control, Promi SD205-OA
has some configurations for Bluetooth. For getting the most out of Promi SD205-OA, user should understand the
following Bluetooth connection schemes.
A Bluetooth device can play a role as a master or slave. Master tries to connect itself to other Bluetooth device, and
slave is waiting to be connected from other Bluetooth devices. A Bluetooth connection is always made by a pair of
master and slave. A slave can be in two modes, Inquiry Scan or Page Scan mode. Inquiry Scan mode is waiting the
packet of inquiry from other Bluetooth devices and Page Scan mode is waiting the packet of connection from other
Bluetooth devices. Every Bluetooth device has its unique address, called BD (Bluetooth Device) address, which is
composed of 12 hexa-decimal numbers.
Promi SD205-OA has 4 operation modes as follows. Each mode can be identified with LED indicators as illustrated in
next section.
Ì
Mode0
Promi SD205-OA must be in Mode0, when it is directly controlled by AT commands.
In this mode, there is no response when power on or software reset, and Promi SD205-OA is just waiting for AT command
input. Neither master nor slave is assigned to Promi SD205-OA in mode0. User can change the configurations of Promi
SD205-OA in this mode.
The factory default is set to Mode0.
Ì
Mode1
Promi SD205-OA tries to connect the last connected Bluetooth device.
Promi SD205-OA in Mode1 is to be a master and tries to connect the last connected Bluetooth device. Promi SD205-OA
always stores the BD address of the Bluetooth device to which Promi SD205-OA has connected last time. When Promi
SD205-OA is initially used or after hardware reset, there is no BD address stored in Promi SD205-OA. In this case, Mode1
does not make any sense and mode change from other operation modes to Mode1 is not allowed. The mode change
to Mode1 can be made after Promi SD205-OA succeeds to connect to other Bluetooth device in Mode0. Once
changed to Mode1, Promi SD205-OA will try to connect automatically the last connected Bluetooth device whenever
power on or software reset.
Promi SD205-OA in Mode1 cannot be discovered or connected by other Bluetooth devices.
Ì
Mode2
Promi SD205-OA is waiting for the connection from the last connected Bluetooth device.
Promi SD205-OA in Mode2 is to be a slave and waiting for the connection only from the last connected Bluetooth
device. Just like Mode1, if there is no BD address stored in Promi SD205-OA, the mode change from other operation
modes to Mode2 is not allowed. Once changed to Mode2, Promi SD205-OA will wait for the connection from the last
connected Bluetooth device whenever power on or software reset.
Promi SD205-OA in Mode2 cannot be discovered or connected to Bluetooth devices other than the last connected
device.
Ì
Mode3
Promi SD205-OA is waiting for the connection from any other Bluetooth devices.
Promi SD205-OA in Mode3 acts like in Mode2, but allows any connection from other Bluetooth device. Most of general
Bluetooth device is set to Mode3.
Promi SD205-OA in Mode3 can be discovered and connected from any other Bluetooth devices.
Promi SD205-OA User Manual – 2. Configurations
LED Indicators
Indicator
Power LED
Standby LED
Connect LED
Mode0
Green
┏━━━━━━━
Red
Mode1
Green
┏━━━━━━━
Green (every 1 sec) ┏┓
Mode2
Green
┏━━━━━━━
Green (every 3 sec) ┏┰┓
Mode3
Green
┏━━━━━━━
Green (every 3 sec) ┏┰┓
Connected
Green
┏━━━━━━━
Green
┏━━━━━━━
┏━━━━━━━
RS232-Tx and RS232-Rx LED are blinking accordingly when data is transmitted. For small data transmission, it may be
hard to recognize the quick blinking.
Serial Ports
The applicable settings for serial ports are as follows.
Serial Port Settings
Values
Baud rate
1200, 2400, 4800,
9600 , 19200, 38400, 57600, 115200, 230400
Data bit
Parity
No parity , Even parity, Odd parity
Stop bit
1,2
The values in box are the factory defaults.
Ì
Data Bit
Promi SD205-OA supports only 8 data bit. In the case of 7 data bit, please contact the technical support.
Ì
Hardware Flow Control
Promi SD205-OA plugged into its host system transmits data from host to the other side Bluetooth device. These data is
saved temporarily in the internal buffer of Promi SD205-OA and sent repeatedly until the transmission is completed
packet by packet. When the radio transmission condition is not good enough to send data promptly, it can cause the
transmission delay. If the host sends more data when the buffer is full, buffer overflow will make Promi SD205-OA
malfunction consequently. In order to prevent this buffer overflow, Promi SD205-OA works as follows.
Promi SD205-OA is always not not using hardware flow control, Promi SD205-OA clears the buffer to secure the room for
next data when the buffer becomes full. This means the loss of data. As the transmission data becomes large, the
possibility of data loss goes higher.
Reset to Factory Defaults
To turn back all the configurations to its factory settings, press the reset button depicted in Fig. 1-3. Press the reset
button with a narrow pointed tool like paper clip longer than 1 second. Reset works only when power is on.
Terminal Program
Promi SD205-OA User Manual – 2. Configurations
A terminal program is an application that will enable a PC to communicate directly with a modem. If you are using
Windows 98SE or higher version of Windows, HyperTerminal program as it is included as part of the operating system.
Promi SD205-OA provides some extended AT commands for its configurations on terminal program.
This manual will explain the method using HyperTerminal. If you need to install HyperTerminal, click start>setting>control
panel>add/remove programs. For more precise information, please refer to Help of Microsoft Windows.
Attach Promi SD205-OA to serial port of host computer and power on. Standby LED is lit in green.
Launch HyperTerminal. It can be found in start >programs >accessories >communication >HyperTerminal. Select the
Serial port that Promi SD205-OA will be connected to.
Input the same settings into Serial port configuration window as Promi SD205-OA settings.
The settings need to be set correctly, otherwise, error message may be shown up on the screen or cause
malfunctioning of Promi SD205-OA.
Choose the settings in File->Properties->Settings->ASCII setup that let you turn echo on in HyperTerminal; this will show
the response Promi SD205-OA sends on the screen.
You now get the HyperTerminal window where you are able to control Promi SD205-OA with AT commands. For
expanded AT commands that Promi SD205-OA provides, please refer to Appendix A. AT commands.
Example of AT commands:
AT+BTINFO?
000195000509,PSDv3b-000509,MODE0,STANDBY,0,0,HWFC
OK
AT+BTINQ?
00019520007E,PSDv2a-20007E,001F00
0004B300E205,AP2002:1 #0,020300
OK
ATD00019520007E
OK
CONNECT 0001952007E
Dip Switch
With the combination of 4 slot dip switches, baud rate and hardware flow control can be set simply without host
computer.
Reset Button
Dip Switch
Pairing Button
Upper 3 dip switches are used for setting baud rate, and bottom dip switch is used for setting hardware flow control
option. If the baud rate needs to be set out of the range given below, PromiWIN or terminal program should be used
for extended AT commands. At this time combination of dip switches must be complied with AT cmd. Then baud rate
will go back to 9600 as default.
Promi SD205-OA User Manual – 2. Configurations
Baud
Rate
2400
4800
9600
10
19.2K
38.4K
57.6K
115.2K
AT cmd
Pairing Button
Promi SD205-OA provides Pairing Button for instant configuration without PC to make an automatic connection
between two Promi SD205-OAs. For convenience sake, name two Promi SD205-OAs as SD1 and SD2 respectively.
1.
Turn off all the nearby Promi SD205-OA
2.
Turn on SD1 and SD2 and hardware reset both of them by pressing Reset Button.
3.
Press the Pairing Button of SD1 for 2 seconds until Standby LED turns off and Connect LED blinks 3 times every
2 seconds. Keep the power ON.
4.
Press the Pairing Button of SD2 for 2 seconds until Standby LED turns off and Connect LED blinks 3 times every
2 seconds. Now press again the Pairing Button for 2 seconds until Connect LED blinks every 0.5 second.
5.
Wait for SD1 & SD2 to be connected for a while until Connect LED’s of SD1 and SD2 is lit in green. It takes
about 10 seconds to make a connection. If there are many Bluetooth devices nearby, it will take a little bit
more.
6.
Turn SD1 off and on. Connect LED blinks twice in green every 3 seconds.
7.
Turn SD2 off and on. Connect LED blinks once in green every 1 second.
8.
Now a pair of Promi SD205-OA is configured to make automatic connection, whenever power off and on.
9.
Just use this pair of Promi SD205-OA like virtual serial cable.
SD 1
1. hard reset
2. push pairing
button
3.
status
Mode0
Mode3
4. connected
Slave
LED
Standby LED turn on.
Connect LED blinks 3
times every 2 sec.
Connect LED is lit in
green
SD 2
1. hard reset
2. push pairing
button
3. push pairing
button agian
4. connected
status
Mode0
Mode3
Mode1
Master
LED
Standby LED turn on.
Connect LED blinks 3
times every 2 sec.
Connect LED blinks every
0.5 sec.
Connect LED is lit in
green
Promi SD205-OA User Manual – 3. Connections
11
3. Connections
z RS232 Interface
z Pin Assignment
z Power Supply
Promi SD205-OA User Manual – 3. Connections
12
RS232C Interface
Ì
DTE/DCE
If the full EIA232 standard is implemented as defined, the equipment at the far end of the connection is named the DTE
device (Data Terminal Equipment, usually a computer or terminal), has a male DB9 connector. Equipment at the near
end of the connection (the telephone line interface) is named the DCE device (Data Circuit-terminating Equipment,
usually a modem), has a female DB9 connector. The cable linking DTE and DCE devices is a parallel straight-through
cable with no cross-overs or self-connects in the connector hoods. If all devices exactly followed this standard, all
cables would be identical, and there would be no chance that an incorrectly wired cable could be used.
Ì
DB9 Female
Promi SD205-OA is a DCE device compatible with RS232 standard, having DB9 female interface.
Pin #
Signal
Direction
N/A
RxD
Input
TxD
Output
N/A
N/A
Vcc
N/A
N/A
GND
Input
Description
Received Data
Transmitted Data
5V~12V
Signal Ground
Promi SD205-OA User Manual – 3. Connections
Pin Assignment
Ì
Promi SD205-OA must be use for connect pc to Promi SD205-OA connection cable.
13
Promi SD205-OA User Manual – 3. Connections
14
Power Supply
Promi SD205-OA can be supplied power through the power jack and through pin 6 of DB9 connector.
Ì
Through Power Jack
DC 5 ~ 12V, Min. 150mA power should be supplied through DC power cable. Red cable is positive and black one is
negative.
Electrical Polarity
Red +
Black DC Power Cable
AC/DC power adaptor and USB power cable are also available to supply power.
AC/DC Power Adapter
Ì
USB Power Cable
Through Pin 6 of DB9 connector
The power can be supplied through pin 6 of DB9 connector. Because Promi SD205-OA does not have any protection
circuit from surge
Promi SD205-OA User Manual – 4. Specifications
15
4. Specifications
z Bluetooth
z Serial Interface
z Power
z Mechanical Dimensions
z Environmental
z Default Antenna
z Wireless Coverage
Promi SD205-OA User Manual – 4. Specifications
Ì
Ì
Ì
Ì
16
Bluetooth Interface
Bluetooth 1.2 specification compatible and qualified
Protocol: RFCOMM, L2CAP, SDP
Profiles: Serial Port Profile, Generic Access Profile, Service Discovery Profile
Radio Frequency: 2.402 ~ 2.480GHz
Number of Channels: 79
Transmission Power Class 1
Data Transmission Rate: 380Kbps Max.
Serial Interface
EIA RS232C Standard
Connector: DB9 female
Data Transmission Rate: 1,200 ~ 230,400bps
Hardware Flow Control: Not Support
Power
DC 5 V Constant Voltage
Supply: DC Jack or Pin 6 of DB9
Mechanical Dimensions
16mm
63mm
Ì
35mm
30mm
Environmental
Recommended Operational Temperature: -20℃ ~ 55℃
Recommended Operational Humidity: 90% Max. Non-condensing
Promi SD205-OA User Manual – 4. Specifications
Ì
Ì
17
Default Antenna
Type: Helical
Frequency: 2,400 ~ 2,485GHz
Gain: Max. 2dBi
Impedance: 50Ω
size: 30mmÂŻ9mm (WÂŻD)
weight: 3.5g
Wireless Coverage
The table below shows the average measuring results in open space. These results can vary according to the
environmental conditions.
Antennas for two Promi SD205OA units
Helical Antenna
Maximum Distance
100 m
Promi SD205-OA User Manual – Appendix A. AT Commands
A-1
Appendix A. AT Commands
z Terminology
z Command Description
Promi SD205-OA User Manual – Appendix A. AT Commands
A-2
Terminology
Ì
AT Command
AT command set is the de facto standard language for controlling modems. The AT command set was developed by
Hayes and is recognized by virtually all personal computer modems. Promi SD205-OA provides the extended AT
command set to control and configure the serial parameters and Bluetooth connection.
HT
HT
Ì
TH
TH
HT
TH
HT
HT
TH
TH
AT Response
Promi SD205-OA replies to AT commands with 4 kinds of message, ‘OK’, ‘ERROR’, ‘CONNECT’ and ‘DISCONNECT’.
Ì
Ì
Ì
Ì
Operation Mode
Mode0: Waiting for AT commands
Mode1: Attempting to connect to the last connected Bluetooth device
Mode2: Waiting for the connection from the last connected Bluetooth device
Mode3: Waiting for the connection from any other Bluetooth devices
Operation Status
Standby: Waiting for AT commands
Pending: Executing tasks
Connect: Transmitting data
Security
Authentication: Pin code (or Pass key)
Encryption: Data encryption
Symbols
The symbols are used for the description of command syntax as follows:
Symbol
Meaning
ASCII Code
Carriage return
0x0D
Line feed
0x0A
Carriage return + Line feed
112233445566
Bluetooth device address
n or m
One digit decimal number
to
Timeout in second
Promi SD205-OA User Manual – Appendix A. AT Commands
Command Description
1 ATZ
SD Response
OK
Purpose
Software Reset
Description
This is the same effect as power off and on.
This command disconnects Bluetooth device, and stops ongoing task. After rebooting,
the status is decided by the preset operation mode.
Some AT commands need ATZ to take effect.
2 AT&F
SD Response
OK
Purpose
Hardware reset
Description
This is the same effect as initialization by reset button.
All parameters are initialized to factory defaults. The storage of Promi SD205-OA is
cleared completely.
3 AT
SD Response
OK
Purpose
Check the connection status with host equipment
Description
Check if the connection to host equipment is normal. The serial parameters of Promi
SD205-OA must be same as those of host equipment. If not, SD response is none or
‘ERROR’ or abnormal sequence of strings.
4 AT+UARTCONFIG,Baudrate,Parity,Stopbit
SD Response
OK
Purpose
Set Serial parameters
Parameters
Baudrate=1200/2400/9600/14400/19200/38400/57600/115200/230400 (Default=9600)
Parity=N/E/O (Default=N)
Stopbit=1/2 (Default=1)
Description
The Serial parameters can be set or changed. The factory default is 9600, N, 1.
To take effect of this command, ATZ or power off and on.
Example
AT+UARTCONFIG,9600,N,1
5 AT+USEDIP?
SD Response
m
Purpose
Check the Baud rate set by dip switch
Description
m=0: Set to ‘AT cmd’
m=1: Set to other than ‘AT cmd’
A-3
Promi SD205-OA User Manual – Appendix A. AT Commands
6 AT+BTINFO? 
SD Response
112233445566,DeviceName,Mode,Status,Auth,Encryp,FlowControl
OK
Purpose
Display Bluetooth settings
Description
The current Bluetooth settings are displayed including BD address, Device name,
Operation mode, Operation status, Authentication, Data Encryption, and Hardware
Flow Control. The initial value of Device name is ‘PSDv3b-445566’. PSD stands for Promi
SD205-OA, v3b for the version of firmware, and 445566 for the last 6 digits of BD address.
Mode=MODE0/MODE1/MODE2/MODE3
Status=STANDBY/PENDING/CONNECT
Auth=0/1 (Authentication is not activated when 0)
Encrypt=0/1 (Encryption is not activated when 0)
FlowControl=HWFC/NoFC
Example
000B530011FF,SENA,MODE0,PENDING,1,1,HWFC
7 AT+BTINQ? 
SD Response
112233445566,FriendlyName,CoD
112233445566,FriendlyName,CoD
112233445566,FriendlyName,CoD
OK
Purpose
Search Bluetooth devices nearby
Description
The Bluetooth devices in Inquiry scan mode nearby are displayed with their BD
addresses, Device names, and Class of device.
Maximum 10 devices are scanned for 30 seconds.
8 AT+BTLAST? 
SD Response
112233445566
OK
Purpose
Display the BD address of the last connected device
Description
The Bluetooth device connected to this Promi SD205-OA last time is displayed with its BD
address.
9 AT+BTMODE,n
SD Response
OK
Purpose
Set operation mode
Parameters
n=0: MODE0 (Default)
n=1: MODE1
n=2: MODE2
n=3: MODE3
Description
When the operation status is ‘Pending’ currently, change the status to ‘Standby’ with
AT+BTCANCEL prior to this command.
To take effect of this command, ATZ or power off and on.
Example
AT+BTMODE,2
OK
ATZ
A-4
Promi SD205-OA User Manual – Appendix A. AT Commands
10 +++
SD Response
OK
Purpose
Convert the operation status of ‘Connect’ to ‘Standby’
Description
In ‘Connect’ status, data from host is transmitted to the other side Bluetooth device,
and any AT command is not accepted but this command, which is not echoed on the
screen.
When Promi SD205-OA encounters a character ‘+’ from host, it stops the data
transmission and waits for next 2 characters. If the next 2 characters aren’t both ‘+’, it
restart to transmit data including the first ‘+’ as well. If not, it converts the operation
status to ‘Standby’.
If the data from host includes ‘+++’, it will convert the operation status to ‘Standby’
unexpectedly. Notice that Promi SD205-OA holds data transmission when it encounters
‘+’, until receiving next character.
‘+’ is an escape sequence character by default, which is changeable by AT+SETESC.
11 ATO
SD Response
None
Purpose
Convert the operation status of ‘Standby’ to ‘Connect’
Description
You can convert the operation status of ‘Standby’ to ‘Connect’ ready to transmit data.
12 AT+BTCANCEL
SD Response
OK
Purpose
Terminate a current executing task
Description
This terminates a current executing task, such as Inquiry scan and Page scan, then
converts the operation status to ‘Standby’.
Reference
ATD, AT+BTINQ?, AT+BTCANCEL
Example
AT+BTSCAN,2,30
Reference
ATD, AT+BTINQ?, AT+BTCANCEL
Example
AT+BTSCAN000B530011FF,30
13 ATD
SD Response
OK
CONNECT 112233445566
or
OK
ERROR
Purpose
Connect to the last connected Bluetooth device
Description
Promi SD205-OA saves the BD address of the Bluetooth device most recently
connected. ATD can make connection to it without input its BD address.
If it fails to make connection, SD response is ‘ERROR’.
14 ATD112233445566
SD Response
OK
A-5
Promi SD205-OA User Manual – Appendix A. AT Commands
CONNECT 112233445566
or
OK
ERROR
Purpose
Connect to the Bluetooth device with given BD address
Parameters
112233445566=BD address
Description
Promi SD205-OA attempts to connect to the Bluetooth device with the given BD
address. To make successful connection, the Bluetooth device must be in Page scan.
This attempt continues for 5 minutes.
If it fails to make connection, SD response is ‘ERROR’.
Example
ATD000B530011FF
15 ATH
SD Response
OK
DISCONNECT
Purpose
Release the current connection
Description
The current Bluetooth connection is released normally. It takes about 30 seconds to
detect an abnormal disconnection such as power off and moving out of service range.
16 AT+BTLPM,n
SD Response
OK
Purpose
Set low power mode
Parameters
n=0: Inactivate (Default)
n=1: Activate
Description
During no data transmission, Promi-SD can be in low power mode to save the power
consumption. It takes a few seconds to wake up Promi-SD in low power mode.
17 AT&V
SD Response
S0:m0;S1:m1; …Sn:mn
OK
Purpose
Display all the S-register
Description
All parameters are stored at S-register in flash memory. These values are sustained until
hardware reset.
18 ATSnn? 
SD Response
value
OK
Purpose
Display a given S-register
Parameters
nn= Address of S-register
Description
A specific S-register is displayed.
19 ATSnn=mm
A-6
Promi SD205-OA User Manual – Appendix A. AT Commands
SD Response
OK
Purpose
Change S-register value
Parameters
nn= Address of S-register
mm= New value of S-register
Description
Some S-registers are optimized for the overall performance and protected from an
arbitrary change by user. When users try to change these S-registers, SD response is
‘ERROR’.
For details of S-register, refer Appendix. B.
Example
ATS10=0
A-7

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