Usconverters S2B2232FIV2 User manual

Datasheet & Quick Reference, S2B2232FIV2 / S2B2232FEV2
www.usconverters.com Page 1
Serial RS232 Bluetooth v2.1 Adapter
Datasheet & Quick Reference for S2B2232FIV2 / S2B2232FEV2
Package Contents:
 RS-232 adapter x 1
 User manual x 1
 USB Cable x 1
 Di-pole antenna (S2B2232FEV2 only)
S2B2232FIV2
Internal chip antenna
S2B2232FEV2
External di-pole antenna
DB9 (Female)
Mini USB (Power)
▲ + (5 - 40 VDC)
▼ GND
Reset to Default
LED:
Link: Blue
PWR/Data: Red
▲ DCE
▼ DTE

Datasheet & Quick Reference, S2B2232FIV2 / S2B2232FEV2
www.usconverters.com Page 2
SPECIFICATIONS
Part number S2B2232FIV2 (internal chip antenna)
S2B2232FEV2 (external di-pole antenna)
Operating systems Windows 11, Windows 10, Windows 8.1, Windows 8, Windows 7, Vista, XP, 2000, ME, 98,
Linux, Mac, Android
Interface type RS232
Chipset ESP32-D0WDQ6-V3 with External 4M flash
Baud Rate 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 230400 bps
Data bits 5, 6, 7, 8
Stop bits 1, 1.5, 2
Parity None, odd, even
Data buffer size
RX buffer: 2048 bytes
TX buffer: 8192 bytes
Queue buffer size: 30 bytes
Operating distance Up to 330 feet (100 meters) in open space
LED lights Power, Link status
Bluetooth stack Serial Port Profile (SPP)
PIN PIN code available for pairing
Connection type Point-to-point
Flow control CTS/RTS
DEC/DTE Manual switch
Parameters configurable
by
• Over serial port (with AT commands/terminal software)
• Over BLE Bluetooth using an Android app (currently only firmware version lower than
V7.18)
RS232 Signals TX, RX, CTS, RTS, GND
Echo Configurable by software (on/off)
NMEA 183 compatible Yes
Works with Cisco
products Yes, routers and switches (tested with Cisco Catalyst 3560)
Works with Windows
2008/20012 Server? No, Windows Server does not have built-in Bluetooth drivers
Can pair while serial
interface receives data Yes limited
Full duplex RS232 Yes, can send and receive simultaneously both when connected over Bluetooth and when used
in pairs.
Works with iPad/iPod? No, it will not work with iPads/iPods due to the restrictions Apple put on their Bluetooth chipset,
however it does work with most other Bluetooth enabled smartphones, tablets and devices
Number of slaves per
master 7
Serial port 1-port female D-sub 9-pin
Bluetooth version V2.1 Class 1 (for serial port communication)
BLE V4.2 (for parameter configuration)
Frequency range 2.4GHz – 2.4835 GHz ISM Band
Hopping 1.600/sec, 1MHz channel space
Modulation GFSK-1, DQPSK-2, 8-DPSK-3 Mbps
Tx power Max. 18dBm (class 1)
Rx sensivity -86 dBm typical

Datasheet & Quick Reference, S2B2232FIV2 / S2B2232FEV2
www.usconverters.com Page 3
Antenna
S2B2232FIV2: Internal dipole
S2B2232FEV2: External 2dBi di-pole, Reverse Polarity SMA male (inside threads / center
receptacle)
Antenna connector on
adapter (S2B2232FEV2) Reverse Polarity SMA female (outside threads / center pin)
Power options
 Mini USB cable (5VDC)
 DB9 connector Pin 9 (5 - 40VDC)
 Screw terminals (5 - 40VDC)
Current consumption Max 100mA
Operating temp. -13°F to 185°F (-25°C to 85°C)
Dimensions 89 x 39 x 17.5 mm
Adapter weight 34g
Certifications CE, FCC, RoHS
Default factory settings:
 Baud rate: 9600 bps
 Data bit: 8
 Parity: none
 Stop bit: 1
 Flow control: none
 Mode: Slave / Peripheral
 Device name: Serial Adapter
 Bluetooth PIN code: ‘disabled’ (Windows may require 0000 to pair)
These settings can be configured through the serial port using any terminal software such as TeraTerm, Putty or Hyper
Terminal. Please see the 'Setup Guide' and below parameter table for details.
Reset Button:
Press and hold the reset button using a paper clip or similar for more than 5 seconds and the adapter will reset and reboot to
factory defaults.
DTE/DCE switch
Use the slide switch to change between DTE and DCE.
Power
The adapter can be powered by 5 – 40VDC via mini USB, pin 9 in the DB9 connector or the screw terminals. ONLY POWER
THE ADAPTER BY ONE OF THESE OPTIONS, OTHERWISE THE ADAPTER MAY GET DAMAGED.
LED Status
Status Description
Red power LED on Power is ON
Blue Link LED fast flashing (2 blink/sec) Adapter in slave mode. Bluetooth ready.
Blue Link LED slow flashing (1 blink/sec) Adapter in master mode (waiting for slave to connect)
Blue Link LED steady on Master mode: Slave and Master is linked
Slave mode: Bluetooth linked and COM port open (when
paired with a PC)
Both blue and red LEDs off Firmware upgrade mode

Datasheet & Quick Reference, S2B2232FIV2 / S2B2232FEV2
www.usconverters.com Page 4
Parameters
The parameters can be configured via the DB9 RS232 serial port using a standard terminal program such as Putty or Tera
Term, or over BLE Bluetooth using an app. Please see the 'Setup Guide' for details.
Note 2: Commands cannot be received by the adapter if it is paired/linked.
Command
V
alue Description
+++ Change the adapter from the data mode into command mode locally. The command is
available only when the adapter is in master mode. The time delay between each “+”
sign is between 0.3 to 1.5 sec.
? List all commands
ADDRESS= This command is used to display the Bluetooth address of the local adapter.
? Inquire the Bluetooth address of the local adapter.
AT Checks the connection status between control terminal and the RS-232 adapter.
Response: “OK” when the connection is ok. “ERROR” when the connection is
unsuccessful.
AUTO= This command is used to enable/disable the auto-connection feature. It is available only
when the adapter is in Master mode. All slaves with the head of the mac. 0012, 0019 or
3C61 will be connected w/o authenticating the pin value. The system will not re-start
after changing this parameter.
Y Master and Slave will connect automatically.
(Default) N Master and Slave will need to be connected manually with the 'CONNECT' command.
? Inquire the current setting.
BAUD= This command is used to specify the baud rate of the COM port.
The command will need 200 ms delay.
1200 1200 bps
2400 2400 bps
4800 4800 bps
*Default 9600 9600 bps
19200 19200 bps
38400 38400 bps
57600 57600 bps
115200 115200 bps
230400 230400 bps
? Inquire the current baud rate.
BIT= Data bit
5 5 data bits
6 6 data bits
7 7 data bits
(Default) 8 8 data bits
? Inquire the data bit setting.
CONNECT= This command is used to establish a connection manually. It is available only when the
adapter is in the Master role.
1~8 Connect the adapter to a Bluetooth device in the neighborhood found through
“SEARCH=?”
xxxxxxxxxxxx Connect the remote adapter by typing the MAC address directly without searching.
?
Display the MAC address of the latest paired device.

Datasheet & Quick Reference, S2B2232FIV2 / S2B2232FEV2
www.usconverters.com Page 5
DEFAULT= This command is used to restore the default settings and originate a warm start.
Y Restore the default settings (e.g. 9600 bps).
The command will re-start the system for 1 second.
DEVICE= xxxxxxxxxxx Pre-set the adapter’s mac address. This command is used with the "connect=device".
DFU= Device Firmware Upgrade
Y
ECHO= This command is used to specify whether the adapter echoes characters received from
the UART back to the DTE/DCE.
N Command characters received from the UART are not echoed back to the DTE/DCE.
(Default) Y Command characters received from the UART are echoed back to the DTE/DCE.
? Inquire the current setting.
FLOW= This command enable or disable flow control signals (CTS/RTS) of the UART port.
Note, the setting is not affected by DEFAULT.
The command will need 1 second delay.
(Default) N Disable flow control.
Y Enable flow control.
? Inquire the current setting
KEY= The key value will be created by the smart phone or Win10 devices when pairing with
the slave adapter. Please type the same 6 numbers shown on the smart phone or
Win10 devices within 15 seconds.
(Default) N
Y
MAC= The mac. Address will be customized by the user. The master will connect the 2nd slave
with the same mac. address if the 1st slave damaged.
xxxxxxxxxxxx The head of the address 0012, 0018, 0019 is available only.
NAME= This command is used to specify a name for the adapter.
You can specify a friendly name using 0 to 9, A to Z, a to z, space and –, which are all
valid characters. Note that “first space or -, last space or – isn’t permitted”. The default
name is “Serial Adapter”.
(Default) Serial Adapter Default device name
xx….xx “xx….xx” is a character string with the length from 5 to 32.
R Restore the default settings name=“Serial Adapter”.
? Inquire the name of the local adapter.
ONE= The master will link with one paired or any nearby slave automatically. All the slaves
with the same pin code will be connected. Once connected, the master will not change
the paired slave until reset to default from the slave. The command is available under
the command “auto=y”.
(Default) N The master will link with any nearby slave automatically.
Y The master will link with the paired slave which is linked by the master before
automatically.
? Inquire the current setting
PARITY= This command is used to specify parity bit setting of COM port.
The command will need 200 ms delay.
(Default) N None parity bit
O Odd parity
E Even parity
? Inquire the current setting.

Datasheet & Quick Reference, S2B2232FIV2 / S2B2232FEV2
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PIN= This command is used to specify a PIN. Paired adapters should have a same PIN. The
length must be 4 – 16 alphanumeric characters. The master will connect the slave first
and check the pin value sent from the slave. The master will connect the slave if the pin
value is the same between both. The command is available for the S2B2232FE(I)V2
only.
(Default) “none”
xx….xx “xx….xx” is a 4 - 32 digit string of alphanumeric characters (in capital or lower case)
? Inquire the current PIN.
PROMPT= This command is used to decide whether status messages are prompted when Setup
commands are executed. The status messages are: OK/ERROR for command
execution, or CONNECT/DISCONNECT/Try Connect Device for connection status.
(Default) Y Prompt result messages.
N Not prompt result messages.
? Inquire the current setting.
ROLE= This command is used to specify whether the adapter is in the master or slave mode. If
the device mode is changed, the adapter will reboot and all paired addresses will be
cleared. The command will need 1 second delay.
M Set the adapter to the master mode.
(Default) S Set the adapter to the slave mode.
? Inquire the current mode of the adapter.
SEARCH= This command is used to search for any Bluetooth device in the neighborhood within
one minute. If any device is found, its name and its 12-digit-address will be listed. The
search ends with a message “Inquiry ends. xx device(s) found.” This command is
available only when the adapter is in the master role by manual.
? Inquire Bluetooth devices in the neighborhood, listing 8 devices the maximum
STATUS= Inquire all the current setting of the adapter.
T Inquire the inner temperature of the IC in centigrade
? Display the current setting of the adapter
STOP= This command is used to specify one or two stop bits of COM port.
The command will need 200ms delay.
(Default) 1 Stop bit
1.5 Stop bit
2 Stop bit
? Inquire the current setting.
VERSION= ? Inquire firmware version.

Datasheet & Quick Reference, S2B2232FIV2 / S2B2232FEV2
www.usconverters.com Page 7
Pin configuration
Pin Signal DTE Direction DCE Direction Description
1 CD Input Output Not connected
2 TxD Output Input Transmit
3 RxD Input Output Receive
4 DSR Input Output Not connected
5 GND N/A N/A Signal ground (and power GND if
powered by pin 9)
6 DTR Output Input Not connected
7 CTS Input Output Clear to send
8 RTS Output Input Request to send (Default)
9 Vcc Input Input Power supply (5 - 40VDC)
BLE GATT Service
1. UUID_1800_SERV = ("00001800-0000-1000-8000-00805F9B34FB")
 UUID = 2A00, Device name, Default: BLE232
2. UUID_180A_SERV = ("0000180A-0000-1000-8000-00805F9B34FB")
 UUID= 2A26,Firmware version,Format: x.x.x, ASCII/read only
 UUID=2A24,BLE version,Format: x.x, ASCII/read only, Value: 4.2 or 5.0
3. UUID_BLE_SERV = ("0003ABCD-0000-1000-8000-00805F9B0131") (Self defined UUID)
 UUID_BLE5DATA = ("00031201-0000-1000-8000-00805f9b0130"),Data from BLE232_TxData(Notification)
 UUID_BLE5SENT = ("00031202-0000-1000-8000-00805f9b0130"),//Data to BLE232_RxData
max244bytes/package(write only)
 UUID_BLE5CONF = ("00031203-0000-1000-8000-00805f9b0130"), Configuration, 4bytes, (read/write)
UUID_BLE_Config (4 bytes): 00031203-0000-1000-8000-00805F9B0130
Byte0 (ReadOnly) Byte1 Byte2 Byte3
Product model Baud Rate Data and Stop bit Port setting
0xAA: RS232
0xAF: RS485/422
0x00: 1200 bps
0x01: 2400 bps
0x02: 4800 bps
0x03: 9600 bps
0x04: 19200 bps
0x05: 38400 bps
0x06: 57600 bps
0x07: 115200 bps
0x08: 230400 bps
Data bit
bit 7: 8 bit
bit 6: 7 bit
bit 5: 6 bit
bit 4: 5 bit
Stop bit
bit 3: 1-bit
bit 2: 1.5-bit
bit 1: 2-bit
bit 0: N/A
bit 0: Parity (0: NONE 1: EVEN)
bit 1: Flow control (0: Disabled 1:
Enabled) (for RS232 model Only)
bit 2: Parity(1:ODD, bit 0 must be 0)
bit 3: Port Type (0: RS485 1: RS422)
(Available on RS485 model only)
bit 4: BLE Role (0: Peripheral 1: Central)
(indication Only)
bit 5:ControlSet (0: set by APP or
command 1: set by 9P switch)
(indication Only)
 UUID_BLE5ADDR = ("00031204-0000-1000-8000-00805f9b0130"), Target Peripheral Mac. Address,
6bytes,(read/write)

Datasheet & Quick Reference, S2B2232FIV2 / S2B2232FEV2
www.usconverters.com Page 8
 UUID_BLE5NAME = ("00031205-0000-1000-8000-00805f9b0130"), Device name, Max. 15bytes,UTF-8,(read/write)
 UUID_BLE5PIN = ("00031206-0000-1000-8000-00805f9b0130"), Pin code, 6bytes, (read/write)
 UUID_BLE5RBT = ("00031210-0000-1000-8000-00805f9b0130");Reboot, 2bytes, (read/write)
4. BLE Central command set: Used to connect BLE peripheral device. Available on ROLE=C.
BLE-NOTIFY= NOTIFY characteristic's UUID string w/o space or symbol. Case-sensitive.
BLE-RX= Read characteristic's UUID string w/o space or symbol. Case-sensitive.
BLE-PRISVC= BLE primary service UUID string w/o space or symbol. Case-sensitive.
BLE-CONNECT= Mac. address of the BLE peripheral device. EX:00A05152911C, Not Case-sensitive.
EX: Link with BLE peripheral S2B5232E. Please follow the procedures to set the UUID.
ROLE=C
BLE-NOTIFY=0003120100001000800000805F9B0130
BLE-RX=0003120200001000800000805F9B0130
BLE-PRISVC=0003ABCD00001000800000805F9B0131
BLE-CONNECT=00A05152911C
Parameter configuration.
The adapter has built-in BLE Bluetooth v4.2 which can be used for configuring the parameters. It cannot be
used for communicating with a serial device, only to configure the parameters.
App configuration is currently only available for firmware versions lower than V7.18. You can downgrade the
firmware if needed.
iOS
https://apps.apple.com/us/app/ble2serial/id1593360257?l=zh
Android
https://play.google.com/store/apps/details?id=com.uconnect.ble5serial

Datasheet & Quick Reference, S2B2232FIV2 / S2B2232FEV2
www.usconverters.com Page 9
Federal Communications Commission (FCC) Statement
RADIO FREQUENCY INTERFERENCE STATEMENT
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 correcting
the interference by one or more of the following measures:
- Reorient the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into and outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
-
Warning: A shielded-type power cord is required in order to meet FCC emission limits and also to prevent interference to the
nearby radio and television reception. It is essential that only the supplied power cord be used.
You are cautioned that changes or modifications not expressly approved by the party responsible for compliance could void
your authority to operate the equipment.
The information contained in this document is subject to change without notice.
FCC ID: XJ8-BT-232B CCAB09LP2610T2 1177