W5500S2E serial to Ethernet module
W5500S2E user manual
35
C1_IT (Inactivity timeout)
Command format
Parameters
Usage
AT+C1_IT?
Nil
Read
AT+C1_IT=<parameter>
Value range: 0 ~ 60000, unit: ms;
Default: 0 (disable this function)
Set
Response
[C1_IT] Value is:<value>\r\nOK\r\n
Example
Command: AT+C1_IT=1000\r\n
Response: [C1_IT] Value is:1000\r\nOK\r\n
This command is valid only in TCP modes & “data pass-through mode”.
Define the inactivity timeout period for TCP established sessions in mini seconds (ms).
C1_TCPAT (TCP keepalive interval)
Command format
Parameters
Usage
AT+C1_TCPAT?
Nil
Read
AT+C1_TCPAT=<parameter>
Value range: 0~255, unit 5s;
Default: 0 (Disable)
Set
Response
[C1_TCPAT] Value is:<value>\r\nOK\r\n
Example
Command: AT+C1_TCPAT=1\r\n
Response: [C1_TCPAT] Value is:1\r\nOK\r\n
This command is valid only in TCP modes & “data pass-through mode”.
This parameter determines the interval between TCP keep-alive retransmissions until a response is
received. Once a response is received, the delay until the next keep-alive transmission is again controlled
by the value.
C1_LINK_P (TCP password authentication)
Command format
Parameters
Usage
AT+C1_LINK_P?
Nil
Read
AT+C1_LINK_P=<parameter>
0: Disable (Default)
1: Enable
Set
Response
[C1_LINK_P] Value is:<value>\r\nOK\r\n
Example
Command: AT+C1_LINK_P=1\r\n
Response: [C1_LINK_P] Value is:1\r\nOK\r\n
This command is valid only in TCP server mode & “data pass-through mode”.
When TCP password authentication is enabled, the module requires password input by the first packet
from the Ethernet port. If the password is wrong, it requires re-entering password until it receives a
correct password. Module password could be configured or query by the “PASS” command.
