W5500S2E-S1 serial to Ethernet module
W5500S2E-S1 user manual
31
This command could handle usage of those remaining data in serial interface after reconnection.
6.4.4.8
Data packaging size (
AT+C1_SER_LEN
)
Command format
Parameters
Usage
AT+C1_SER_LEN=<len>\r\n
<len>
The length of the data package, value range: 0 ~ 2048
bytes, default: 0 (Disable data packaging by size )
Define new value
AT+C1_SER_LEN?\r\n
Query current value
Return Value
[C1_SER_LEN] Value is: <len>\r\n
When receiving data from serial port, this value defined the length of single data package each time.
6.4.4.9
Data packaging time (
AT+C1_SER_T
)
Command format
Parameters
Usage
AT+C1_SER_T=<time>\r\n
<time>
Data packaging by time, value range: 0 ~ 60000, unit:
ms; default: 0 (disable data packaging by time)
Define new value
AT+C1_SER_T?\r\n
Query current value
Return value
[C1_SER_T] Value is: <time>\r\n
When receiving data from serial port, this value defined the time frame for sending the data in buffer.
6.4.4.10
Inactivity timer (
AT+C1_IT
)
Command format
Parameters
Usage
AT+C1_IT=<time>\r\n
<time>
Inactivity time to disconnect, value range 0 ~ 60000, unit:
ms, default: 0 (Disable this function)
Define new value
AT+C1_IT?\r\n
Query current value
Return value
[C1_IT] Value is: <time>\r\n
When the module is working in TCP server or client mode, there has a chance that opponent device will disconnect
with the module (forcibly disconnected or network failure). However, the module may not notify the disconnection
occur and still maintain the connection active status. Then, there will be a failure when either party initiates the
communication. By defining an inactivity timer for the module, connection will be disconnected if the module didn’t
receive any data in a defined time. When the value of inactivity timer is 0, it will be disable and the connection will
maintain active all the time.
6.4.4.11
Keep alive timer (
AT+C1_TCPAT
)
Command format
Parameters
Function feature
AT+C1_TCPAT=<time>\r\n
<time>
Keep alive time, value range: 0 ~255, unit: 5s; default:
0 (disable this function)
Define new value
AT+C1_TCPAT?\r\n
Query current value
Return value
[C1_TCPAT] Value is: <time>\r\n
Under TCP server mode, the module will send out a keep alive package in a standard of time to check the connection
is it active. If the module did not receive any response, it will disconnect the connection.
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