Usconverters S2W232E-ESP32 User manual

S2W232E-ESP32 Quick reference v. 1.0 www.usconverters.com
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Quick reference sheet for
WiFi to RS-232 adapter S2W232E-ESP32
Package Contents:
• Serial WiFi adapter
• 2 dBi dipole antenna
• Mini USB Cable (for power)
• Quick reference sheet
Indication LEDs:
Link: Blue
PWR/Data: Red
DB9 (Male)
Reset button
Mini USB (Power)
5 - 40 VDC
SMA antenna
connector
▲ DCE
▼ DTE

S2W232E-ESP32 Quick reference v. 1.0 www.usconverters.com
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SPECIFICATIONS
Part number S2W232E-ESP32
Processor ESP32-D0WDQ6-V3 by Espressif
Xtensa® 32-bit LX6 microprocessor
• 448 KB ROM
• 520 KB SRAM
• 16 KB SRAM in RTC
Operating system VCOM software for: Windows 10, Windows 8/8.1,
Windows 7 (32/64-bit). App available for Android and iOS
Network IEEE 802.11 b/g/n
Frequency 2.412 - 2.484 GHz
Security Open, WPA, WPA2, AES
Protocols TCP Server, TCP Client, UDP Server, UDP Client, Httpd
Client
Network modes AP / Station
Max. simultaneous connections 4
Output TX power 802.11b: +19dBm(Max.@11Mbps，CCK)
802.11g: +18dBm(Max.@54Mbps，OFDM)
802.11n: +16dBm(Max.@HT20，MCS7)
Receive sensitivity 802.11b: -85 dBm(@11Mbps，CCK)
802.11g: -70 dBm(@54Mbps，OFDM)
802.11n: -68 dBm(@HT20，MCS7)
Power consumption AP: 74mA (average), 285mA (peak)
STA: 32mA
(
avera
g
e
)
, 196mA
(
peak
)
Operating distance Up to 330 feet (100 meters)
Baud rates 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200,
230400 bps
Data bits 5, 6, 7, 8
Parity None, even, odd
Stop bits 1, 1.5, 2
Flow control None, RTS/CTS
Buffer size 8KB
Parameter configuration Web browser over WiFi
DEC/DTE Manual switch
RS232 Signals TX, RX, CTS, RTS, GND
Serial port 1-port RS232 male D-sub 9-pin with thumb-screws
Antenna 2.4Ghz, 2dBi di-pole with Reverse Polarity SMA (RP-
SMA) male connector (inside threads / center receptacle)
Power supply 5 to 40VDC by screw terminals, DB9 or mini USB
Operating temp. -20°C to 85°C
Weight 43g including antenna
Dimensions 81.6 x 31.75 x 17 mm
Certifications CE, FCC, ROHS

S2W232E-ESP32 Quick reference v. 1.0 www.usconverters.com
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UDefault COM port settings
 Baud rate: 9600 bps

 Data bit: 8

 Parity: none

 Stop bit: 1

 Flow control: none
UDefault network settings
 Adhoc mode (Simple AP), DHCP disabled

 SSID: S2W232-abcd (abcd is the last 4 numbers of the MAC address)

 TCP Server mode

 IP: 192.168.0.3

 Socket port: 5000

 Log in ID: admin

 Log in password: admin
UPowerU
The adapter can be powered through the mini USB port, through the screw terminals or through pin 9 in the
DB9 connector. 5VDC to 40VDC for all power sources. ONLY ONE POWER SOURCE should be
connected at any time, otherwise the adapter may get damaged.
Management
The adapter’s parameters can be configured using a standard web-browser. Please refer to the setup guide for
details.
UVirtual COM port software
A virtual COM port can be created using the free downloadable software utility called USC-VCOM from
www.usconverters.com.
Alternative compatible COM port software are:
• Eltima
• Eterlogic
Please refer to the setup guide for details.
LED indication lights
Red LED: indicates that power is connected and should always be solid ON when power is connected.
Blue LED: indicates network status, network mode and firmware update state.
A
dapter state Network mode Blue LED status WiFi state
Read
y
A
P Flashin
g
1 time pr 1.5 sec Disconnected
Read
y
A
P Solid ON Connected
Read
y
ST
A
Solid ON Connected
Receivin
g
/sendin
g
data
A
P/STA Flashin
g
3 times pr 1.5 sec Connected
Firmware update mode
A
P Flashin
g
3 times pr 1.5 sec Connected
Firmware update successful
A
P Flashin
g
1 time pr 1.5 sec Connected
Firmware update failed
A
P Off Connected

S2W232E-ESP32 Quick reference v. 1.0 www.usconverters.com
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Reset button
To reset the adapter to factory defaults, press and hold the reset button through the small hole on the top of the
adapter for more than 5 seconds.
UDB9 male pin configuration
Pin Signal DTE Direction DCE Direction Description
1 N/A
2 RX Output Input Transmit data
3 TX Input Output Receive data
4 N/A
5 GND Ground
6 N/A
7 RTS Input Output Clear to send
8 CTS Output Input Request to send
9 VCC Power Input (5-40 VDC)
Android and iOS test APP
The APP is used for configuration and data transmission test.
Android iOS
Android:
https://play.google.com/store/apps/details?id=com.ucconnect.uctcpipadapter_hex
iOS:
https://apps.apple.com/us/app/tcp-ip-to-serial-terminal/id1238054234?l=zh&ls=1

S2W232E-ESP32 Quick reference v. 1.0 www.usconverters.com
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Screenshots
Federal Communications Commission (FCC) Statement
RADIO FREQUENCY INTERFERENCE 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.
Tested to comply with FCC standards for home or office use