Enter At Command Mode; At Command List; System Control Command List; Control Command List - Wiznet W5500S2E-Z1 Manual

6.2 Enter AT command Mode

W5500S2E-Z1 has two modes, AT command mode and data mode. In AT command mode, user
could use serial terminal or through user's MCU main board to configure the parameters of the
module. Command enter will return a value (In echo mode, it will show the serial message). In data
mode, all the commands except the "+++" would be ignored to the module. Thus, entering the "+++"
command will change the module into AT command mode.
Note: "+++" command rules: It needs to send "+" symbol continuously in 3 times to through serial
interface to the module. This command requires 1 second gap each before and after this command
has entered to activate the correct response from W5500S2E-Z1. If not, it will consider as user's
data input. This command does not require CRLF (Carriage-Return Line-Feed)(\r\n). The factory
default setting of the module is in AT command mode.

6.3 AT command list

The following list is the AT command (case insensitive)list and related return value that supports by
WIZS2E module. The type "R" stands for read only. "R/W" means it could read and write. "< >" it
means mandatory parameter. "[ ]" it means optional parameters. AT commands are classified into
four categories: Basic commands, Control commands, device configuration commands and serial
configuration commands

6.3.1 System control command list

Features
Terminal check
Entering command mode
Exit command mode

6.3.2 Control command list

Features
Echo
List of commands
List of default / current values
Factory reset
Reset
Ethernet send counter
Ethernet receive counter
Device uptime
Firmware version
W5500S2E-Z1 user manual
W5500S2E-Z1 serial to Ethernet module
Command
AT
+++
AT+EXIT
Typ
Command
e
AT+ECHO R/W
AT+LIST R
AT+PRE R
AT+DEFAULT W
AT+RESET W
AT+NETSEND R
AT+NETRCV R
AT+RUNTIME R
AT+VER R
Max length Parameters / Description
0: Close echo
1
1: Open echo (Default)
0 Queries only: AT+LIST?
0 Queries only: AT+PRE?
15 Required Password (Case sensitive)
15 Required Password (Case sensitive)
0 Queries only: AT+NETSEND?
0 Queries only: AT+NETRCV?
0 Queries only: AT+RUNTIME?
0 Queries only: AT+VER?