Wiznet W7500S2E Series User manual

W7500S2E serial to Ethernet module
W7500S2E user manual
W7500S2E module series support both data pass-through mode and AT data transfer mode. It
supports TCP server, TCP clients and UDP 3 operation mode. Serial baud rate can be as high as
460,800bps. It can be configured by PC configuration utility, web page and AT command.
The unparalleled and robust of W7500S2E module based on ARM Cortex 32bit MCU with
hardwired TCP/IP. Accompanied by a vast functionalities, makes the family of products the
ideal choice, both for new design project or an upgrading of current platform.
Features
 Support dual mode: “Data pass-through” and “AT data transfer”
 Support TCP server, TCP client and UDP operating modes
 Support RS-485 enable pin of an external RS-485 transceiver
 Flexible data packet condition for the serial interface
 Support DHCP to configure IP address and other network configuration parameters
 Support DNS for remote server domain name lookup
 Support NetBIOS for easy access of web configuration page
 Support three configuration method: serial AT command, PC software and web page
 Support local firmware upgrade by PC software
 Support “Keep-Alive” to guarantee TCP connection
Specification
 10/100Mbps Ethernet interface
 Serial interface: 3.3V TTL：TXD, RXD, CTS, RTS, GND
 Baud Rate: From 300bps to 460,800bps with 16 common values
 Data Bit: 7, 8
 Stop Bit: 1, 2
 Parity: NONE, EVEN, ODD
 Flow Control: NONE, CTS/RTS
 Power supply:
 W7500S2E-Z1: DC 5.0V
 W7500S2E-R1: DC 3.3V
 Dimension: L×W×H (mm)
 W7500S2E-Z1: 44.45×31.75×15.75
 W7500S2E-R1: 44.45×31.75×23.00
 Operating temperature:
 W7500S2E-Z1: -40 °C ~ +85 °C
 W7500S2E-R1: -40 °C ~ +85 °C
 Storage environment:
 W7500S2E-Z1: -50 °C ~ +95 °C, 5 ~ 95% RH
 W7500S2E-R1: -50 °C~ +95 °C, 5 ~ 95% RH

W7500S2E serial to Ethernet module
W7500S2E user manual
Document Revision History
Version Date Remarks
V1.0 2018/10/10 Initial release
V1.0.1 2019/01/30
Enhance the description of AT command section
Correct modes information in [Operating Mode (C1_OP)]
Revise Figure 3-1, 3-2 and 3-3
Revised structure of documentation
V1.1 2019/02/19
Add new “Data transfer command”
Revised structure of documentation
Remove obsolete information
Updated all images
V1.1.1 2019/03/19
Move “Factory reset” to an individual chapter 8
Move “Firmware upgrade” to an individual chapter 9
Add notes for firmware version 2.2
Copyright notice
Copyright © WIZnet H.K. Ltd. All rights reserved.
Contact E-mail: [e-mail]
For more information, please visit: https://www.wizse.com/

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Table of Contents
1 Introduction ........................................................................................... 1
1.1 Overview ............................................................................................... 1
1.2 Specifications ......................................................................................... 2
2 Hardware description ............................................................................ 5
2.1 Pin definition.......................................................................................... 5
2.2 WIZS2E breakout board .......................................................................... 7
2.3 Quick testing guide............................................................................... 10
3 Operating modes ................................................................................. 11
3.1 TCP server mode .................................................................................. 11
3.2 TCP client mode ................................................................................... 11
3.3 UDP mode ........................................................................................... 11
4 Data transfer mode .............................................................................. 12
4.1 Data pass-through mode ...................................................................... 12
4.2 AT data transfer mode .......................................................................... 12
4.3 How to enter “Data pass-through mode“ ................................................ 13
5 WIZS2E ConfigTool .............................................................................. 13
5.1 Reading module information.................................................................. 13
5.2 Modify the device settings ..................................................................... 14
5.3 Reset the module ................................................................................. 14
5.4 Useful features ..................................................................................... 14
6 Introduction of AT command ............................................................... 16
6.1 AT command overview .......................................................................... 16
6.2 AT command responds ......................................................................... 16
6.3 Entering AT command Mode ................................................................. 17
6.4 AT command list .................................................................................. 17
6.5 AT command details ............................................................................. 21
6.6 AT Data transfer command ................................................................... 36
6.7 AT command script examples ................................................................ 40
7 Web configuration ............................................................................... 42
7.1 Login page .......................................................................................... 42
7.2 Basic Settings ...................................................................................... 43
7.3 Advance Options .................................................................................. 44
7.4 Management ........................................................................................ 46
8 Factory reset ........................................................................................ 47
8.1 By ConfigTool ....................................................................................... 47
8.2 By using AT command .......................................................................... 47
8.3 By hardware ........................................................................................ 47
9 Firmware upgrade ............................................................................... 48
Disclaimers ................................................................................................ 49

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1 Introduction
1.1 Overview
W7500S2E series modules have the following different part numbers which depend on
different footprint and connectors.
There are different pin assignments for the modules, please see 2.1 for details
Table 1-1 W7500S2E type comparison
Part number Outlook Features
W7500S2E-Z1
1. Dimension: 44.45×31.75×15.75 (mm)
2. Network interface type: Ethernet transformer
3. Voltage input DC 5.0V
4. Operating temperature: -40 °C ~ +85 °C
W7500S2E-R1
1. Dimension: 44.45×31.75×23.00 (mm)
2. Network interface type: RJ45
3. Voltage input DC 3.3V
4. Operating temperature: -40 °C ~ +85 °C
W7500S2E-C1
1. W7500 MCU integrated with W7500S2E firmware
2. Operating temperature: -40 °C ~ +85 °C
3. For hardware details, please visit the W7500 web site
Configuration methods
W7500S2E provides three configuration methods:
 User can configure the module by the WIZS2E ConfigTool utility, which is software
running in Windows® environment. For details, please refer to chapter 4.
 Main MCU can send AT command through serial port for parameter configuration or
user can send the AT command through serial port by a serial terminal software. For
details, please refer to chapter 6.
 Web page configuration allows user to configure the module through web browsers
in the same local area network. For details, please refer to chapter 7.

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1.2 Specifications
Electrical characteristics
Voltage and current characteristics
The following tables show the voltage and current under 25
o
C environment
Table 1-2 W7500S2E-R1 electrical characteristics
（
V
IN
=3.3V
）
Table 1-3 W7500S2E-Z1 electrical characteristics
（
V
IN
=5.0V
）
Symbol Types Ratings
Min Typical Max Unit
V
IN
Module voltage 4.4 5.0 6.0 V
I
IN
Module current 75 66 55 mA
Current characteristics
Table 1-4 W7500S2E-R1 & W7500S2E-Z1 Current characteristics
Working Mode Ratings (mA)
Standby 53
Normal communication 66
Symbol Types
Ratings
Min Typical Max Unit
V
DD
Module voltage 3.0 3.3 3.6 V
I Module current 73 66 61 mA

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Dimension
Please refer to the figure below which shows the dimension of the module.
W7500S2E-Z1 layout and dimension
Figure 1-1 W7500S2E-Z1 dimension - top view
Figure 1-2 W7500S2E-Z1 dimension - side view
A power LED locates on the top of each module with a small + sign marking above.

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W7500S2E-R1 layout and dimension
Figure 1-3 W7500S2E-R1 dimension - top view
Figure
1-4 W7500S2E-R1 dimension - side view
A power LED locates on the top of each module with a small + sign marking above.

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2 Hardware description
2.1 Pin definition
2.1.1 W7500S2E-Z1 pinout and pin definition
Table 2-1 W7500S2E-Z1 pin definition
Pin
no.
Pin Name I/O Description
1 TXOP O Ethernet TXOP signal
2 TXON O Ethernet TXON signal
3 RXIP I Ethernet RXIP signal
4 RXIN I Ethernet RXIN signal
5 DATA_LED O
Ethernet & serial status indicator
Change status while data channel changes
6 TXD O UART TXD signal
7 RXD I UART RXD signal
8
RTS O UART flow control RTS signal
485EN O
Configurable as 485 enable pin
(This function is supported by firmware
version is 2.2 or above)
9 DEFAULT I Factory reset pin (pull down over 3s)
10 RESET I Reset pin (pull down over 200ms)
11 GND - Ground
12 GND - Ground
13 VCC - DC 5.0V
14 VCC - DC 5.0V
15 LINK_LED O Ethernet link indicator
16 × - -
17 × - -
18 × - -
19 × - -
20 × - -
21 CTS I UART flow control CTS signal pin
22 TCP_STATUS O
TCP connection status indicator
High: TCP connection Close
Low: TCP connection Establish
(This function is supported by firmware
version is 2.2 or above)
23 × - -
Figure 2-1 W7500S2E-Z1 pinout

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2.1.2 W7500S2E-R1 pinout and pin definition
Table 2-2 W7500S2E-R1 pin definition
Pin
No.
Pin Name I/O Function
1 × - -
2 × - -
3 × - -
4 × - -
5 DATA_LED O
Ethernet & serial status indicator
Change status while data channel
changes
6 TXD O UART TXD signal
7 RXD I UART RXD signal
8
RTS O UART flow control RTS signal
485EN O
Configurable as 485 enable pin
(This function is supported by
firmware version is 2.2 or above)
9 DEFAULT I
Factory reset pin (pull down over
3s)
10 RESET I Reset pin (pull down over 200ms)
11 GND - Ground
12 GND - Ground
13 VCC - DC 3.3V
14 VCC - DC 3.3V
15 LINK_LED O Ethernet link indicator
16 × - -
17 × - -
18 × - -
19 × - -
20 × - -
21 CTS I UART flow control CTS signal pin
22 TCP_STATUS O
TCP connection status indicator
High: TCP connection Close
Low: TCP connection Establish
(This function is supported by
firmware version is 2.2 or above)
23 × -- --
Figure 2-2 W7500S2E-R1 pinout

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2.2 WIZS2E breakout board
The WIZS2E-EVB evaluation board provides a simple and speedy connection for
evaluating the W7500S2E-Z1 and the W7500S2E-R1. The connectors and I/O are shown
below.
Figure 2-3 WIZS2E breakout board
WIZS2E-EVB evaluation board integrates RJ45, UART (TTL) and mini USB interfaces.
 RJ45 (J5) interface pin assignment
“×” indicate for not connected
Pin Signal Pin Signal
1 RXIN 5 ×
2 RXIP 6 TXOP
3 TXON 7 ×
4 × 8 ×
 P2 interface pin Assignment
Pin Signal Pin Signal
1 5V 5 3V3
2 GND 6 GND
3 TX 7 RTS
4 RX 8 CTS
 The mini USB Interface (J6) pin assignment
Note: This mini USB connector is only for the power supply 5V DC of the evaluation board.
Pin Signal Pin Signal
1 5.0V 4 ×
2 × 5 GND
3 × 7 RTS
 SW3 is power supply selection jumper for 5V or 3.3V; please short the corresponding
voltage to the Vcc pin.
Pin Signal Description
5V 5.0V Short with Vcc for W5500S2E-Z1
Vcc Vcc Short with 5V or 3V3 for Vcc voltage-
3V3 3.3V Short with Vcc for W5500S2E-R1
RJ-45
LED
W7500S2E pin header
W7500S2E
Power supply
WIZS2E-EVB
Power supply
TTL pin header
Default button Reset button

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 WIZSE evaluation board button description
Table 2-3 WIZS2E breakout board button description
Button Description
SW1 (default) Press button over 3 seconds for factory reset
SW2 (RESET) Hardware reset button
 WIZS2E breakout board LED description
Table 2-4 WIZS2E breakout board LED description
LED Description
ACT Ethernet ACT indicator
LINK Ethernet LINK indicator
DATA Ethernet & serial status indicator
Change status while data channel changes
1 . W7500S2E-Z1 reference schematic
Figure 2-4 W7500S2E-Z1 reference schematic

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2 . W7500S2E-R1 reference schematic
Figure 2-5 W7500S2E-R1 reference schematic

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2.3 Quick testing guide
WIZS2E module can convert any devices with serial interface to have Ethernet
connectivity easily.
Figure 2-6 W7500S2E module testing evaluation block diagram
TCP/IP network
TCP/IP
Network
Serial Serial Serial

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3 Operating modes
W7500S2E module supports TCP server, TCP client and UDP modes. The followings
demonstrate these operating modes.
3.1 TCP server mode
Figure 3-1 TCP server mode diagram
In TCP server mode, W7500S2E listens on a local port and waiting for the connection
from a TCP client. They can start communication each other after link established.
3.2 TCP client mode
Figure 3-2 TCP client mode diagram
In TCP client mode, W7500S2E connects to a preset TCP server. If failure to connect, it
can be configured to re-connect continuously. They can start communication each other
after link established.
3.3 UDP mode
Figure 3-3 UDP mode diagram
In UDP mode, W7500S2E acts as an UDP peer to send data to another preset UDP peer.
W7500S2E can also receive data from other UDP peers.
Serial
Serial
Serial
TCP
client
TCP/IP
network
Ser
TCP server
TCP
server
TCP/IP
network
TCP client
UDP peer TCP/IP
network
Ser
UDP peer
User device
User device
User device

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4 Data transfer mode
W7500S2E series serial-to-Ethernet module has two mode of data transfer mode to
choose from. It includes “Data pass-through mode” & “AT data transfer mode”. Whereas
“AT data transfer mode” is supported by firmware version 2.2 and above
4.1 Data pass-through mode
Data pass-through mode of W7500S2E has the following characteristics
1. To configure W7500S2E to transmit data, parameters need to be configured in AT
command before switching into “data pass-through mode”
2. Module will enter the preset mode and parameter after module entered into “data
pass-through mode”
① In TCP server mode, it will listen on a local port and wait for a TCP client
connection
② In TCP client mode, it will connect to the preset remote TCP server until
connection establish
③ In UDP mode, no connection is needed. Module will wait for the data
3. After establish TCP connection or entered UDP mode, data will be pass-through
between the serial and Ethernet ports according to the preset settings
4. If the TCP connection is closed, module will act as below
① In TCP server mode, it will listen on a local port again and wait for a TCP client
connection
② In TCP client mode, it will reconnect to the preset remote TCP server
5. If the MCU would like to change the parameters. It is need to exit the “data
pass-through mode” and enter into AT command mode for configure the parameters
4.2 AT data transfer mode
AT data transfer mode of W7500S2E has the following characteristics
1. To configure W7500S2E to transmit data, parameters can be configured in AT
command mode. Sending data in “AT data transfer mode” does not require
switching mode
2. After configure the parameter, data can be send directly in AT command mode for
TCP or UDP communication
① In TCP server mode, it will listen on a local port and wait for a TCP client
connection
② In TCP client mode, it will connect to the preset remote TCP server. If
connection cannot be establish within 3s. It is need to resend command to
reconnect.
③ In UDP mode, no connection is needed. Module will wait for the data
3. After establish TCP connection or entered UDP mode, data can be sent or received
for single packet at a time only
4. If TCP connection is close. It is need to reconnected using AT command.

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5. If parameters changes are needed, it can be configured directly using AT command.
4.3 How to enter “Data pass-through mode“
There is three ways for entering the “data pass-through mode”.
1 By AT command (For details, please refer to chapter 6 “RESET & “EXIT” command)
2 Web page (For details, please refer to chapter 7)
3 WIZS2E ConfigTool utility (For details, please refer to chapter 5)
5 WIZS2E ConfigTool
WIZS2E ConfigTool is Windows
® software
compatibles to all WIZS2E modules. It can be
used to read, configure all settings and firmware updating for WIZS2E modules.
5.1 Reading module information
When starting ConfigTool or clicking the button, WIZS2E ConfigTool will
search all WIZS2E modules that have connected in the same LAN. Figure below shows the
search result with one module in the network. By selecting the MAC address in the list,
you can read and configure all the parameters of this module.
Figure 5-1 WIZS2E ConfigTool “Basic Settings”

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Figure 5-2 WIZS2E ConfigTool “Advance Options”
5.2 Modify the device settings
If there is any updated parameter, please click button to save your
configuration and restart.
5.3 Reset the module
First click the “Reset” button and then to click the “Reset Now!” button
to reset the module without saving any setting
5.4 Useful features
Switching PC network interface
If the PC has more than one network interface, user can select the network interface
which connecting to the module. By selecting “Update IP list!” the
interface list will be refreshed.

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Right-click context menu
WIZS2E ConfigTool provides additional options via the context menu. When right-click on
a device in the list on the left side, the function list will appear as shown in the figure
below.
1. Expand/collapse all device details
2. The device list can be sorted by MAC address or device type or device name
3. The function “Search again!” is for users to keep the original device list unchanged.
Newly searched device would be list under the current device list.
Figure 5-3 Right mouse click menu

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6 Introduction of AT command
6.1 AT command overview
AT command can be sent to the serial port of W7500S2E running in AT command mode.
AT command is case insensitive. AT command is always starting with string “AT” and ends
with “\r\n”. Each command has specific response and parameter format.
Below are difference types of AT command:
1. Commands without parameter
Format: AT+<command>\r\n
No extra parameters or symbol after the command.
Example
Command: AT+EXIT\r\n
Response: OK\r\n .
2. Commands with parameter
Format:
AT+<command>=<parameter>\r\n
These commands are for configure certain settings.
Example
Command: AT+ECHO=1\r\n
Response: [ECHO] Value is: 1\r\n OK\r\n
3. Read commands
Format: AT+<command>?\r\n
These commands read the current settings value.
Example
Command: AT+ECHO?\r\n
Response: [ECHO] Value is: 1\r\n OK\r\n
Based on different AT command sent, W7500S2E will return with corresponding response.
The response type is shown in the table below.
6.2 AT command responds
Table 6-1 AT command responds list
Response type Response Description
Error message
Command Invalid\r\nERROR\r\n Invalid command
<Error Info>\r\n Invalid parameter
or in the wrong mode
Success message OK\r\n Command is executed successfully
[Command] Value is:<value>\r\nOK\r\n

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6.3 Entering AT command Mode
W7500S2E has two modes, “AT command mode” and “Data pass-through mode”. In “AT
command mode”, W7500S2E is waiting for the AT Command from the serial port.
Different settings can be set by serial terminal software or through the serial port of the
MCU.
Note: The existing connections will be closed when entering “AT command mode”.
When W7500S2E is in “AT command mode” mode, sending “AT\r\n”, it will respond with
“OK\r\n” if it is working correctly.
In “Data pass-through mode”, W7500S2E will not detect any AT command sending to the
serial port. All messages received by the serial port will be regarded as data except the
special “+++” code below, which switching the module into AT command mode.
Note:
”+++” code rules:
It is needed to send “+” symbol continuously in 3 times through the serial port with 1
second time gap both before and after the “+++”.
6.4 AT command list
W7500S2E module serial-to-Ethernet module supports serial AT command for
configuration. Also it support sending data through the AT command mode.
“AT data transfer command” and “save” command are supported by firmware
version 2.2 and above.
6.4.1 AT setting command list
AT setting command is used for configure or read the parameter of W7500S2E.
AT command has attribute R: Read, W: Set, R/W: Read and set
Table 6-2 AT command list
Type
Command Function
Attribute
Max
length
Parameters
Control command
AT Terminal check R - -
ECHO Enable or disable echoing R/W 1 0: Echo off
1: Echo on (default)
DEBUGMSGEN Debug message R/W 1 0: Disable
1: Enable (default)
NAME Module name R/W 15 Must be numbers, alphabets or the
combination of both
PASS Module password R/W 15 Must be numbers, alphabets or the
combination of both (Default: admin)
DEFAULT Reset to factory default W 15 Module password