W5500S2E-S1 serial to Ethernet module
W5500S2E-S1 user manual
22
Features
Command
Type
Max length
Parameters / Description
TCP link establishment
condition
AT+C1_LINK_T
R/W
1
Only available on TCP client
0: Reconnect after power up the module (default)
1: Reconnect after received data from serial
interface
TCP link establishment
message
AT+C1_LINK_M
R/W
1
Only available on TCP modes
0: No message
1: Send Device ID
2: Send MAC address
3: Send IP address
bytes sent by serial
AT+C1_SEND_NUM
R
0
Queries only:
AT+C1_SEND_NUM?
Counter range: 0 ~ 4,294,967,295
bytes received by serial
AT+C1_RCV_NUM
R
0
Queries only:
AT+C1_RCV_NUM?
Counter range: 0 ~ 4,294,967,295
6.4
AT command details
6.4.1
Basic commands
6.4.1.1
Terminal check (
AT
)
Command format
Parameters / Description
Usage
AT
Nil
Terminal check
return value
OK\r\n
Check the terminal device is it working. If it is working normally with the module, it will return “OK” value. If the
terminal is not working, it will not return anything.
6.4.2
Control commands
6.4.2.1
Enter command mode (
+++
)
Command format
Parameters / Description
Usage
+++
Nil
Exit from data mode
Return value
AT-Command Interpreter ready\r\n
Under W5500S2E-S1’s data mode, transmitting “+++” through serial interface in the same time will change the
module from data mode to command mode.
6.4.2.2
Exit command mode (
AT+EXIT
)
Command format
Parameters / Description
Usage
AT+EXIT\r\n
Nil
Exit command mode
Return value
OK\r\nListening on XXX.XXX.XXX.XXX: XXX \r\n
After finished configured the settings in command mode, user needs to input “AT+EXIT\r\n” for saving the
settings and exit from the command mode to data mode. Any updated parameter in this session will only be saved
into EEPROM after executing this command.
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