Wiznet W5500S2E User Manual page 45

CONNECT (Initiating TCP connection)
Command format
AT+CONNECT
Response OK\r\n
Description Upon successful completions
Response <Error Info>\r\n
Description Module is not in TCP client mode
Command: AT+CONNECT\r\n
Example
Response: OK\r\n
This command is valid only in TCP client mode. i.e. "C1_OP" is set as "1". Otherwise, it will respond with
error message. After execute this command; the module will try to connect to the TCP server. If
connection cannot be established in 3s, it returns with error messages.
Note: After execute this command, TCP connection can be monitor with the "TCP_STATUS" command or
the voltage level of the "TCP_STATUS" pin. This command is supported by firmware version 2.3 and
above.
TCP_STATUS (TCP connection status)
Command format
AT+TCP_STATUS
Response [TCP_STATUS ] Value is:<value>\r\n OK\r\n
Description 0: TCP not connected
1: TCP connected
Command: AT+TCP_STATUS?\r\n
Example
[TCP_STATUS ] Value is:1\r\n OK\r\n
This command is valid only in TCP modes.
This command and the "TCP_STATUS" pin can both be used to monitor the TCP connection status.
Note: This command is supported by firmware version 2.3 and above.
UDP (Establish UDP connection)
Command format
AT+UDP
Response OK\r\n
Description Upon successful completions
Response <Error Info>\r\n
Description Module is not in TCP client mode
Command: AT+UDP\r\n
Example
Response: OK\r\n
This command is valid only in UDP mode i.e. "C1_OP" is set as "2". Otherwise, it will return with error.
Note: This command is supported by firmware version 2.3 and above.
W5500S2E user manual
W5500S2E serial to Ethernet module
Parameters
Nil
Parameters
Nil
Parameters
Nil
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Usage
Execute
Usage
Read
Usage
Execute