W5500S2E-S1 serial to Ethernet module
W5500S2E-S1 user manual
32
6.4.4.12
TCP authentication (
AT+C1_LINK_P
)
Command format
Parameters
Usage
AT+C1_LINK_P=<pass>\r\n
<pass>
0: No password is required for TCP connection
1: Required password for TCP connection
Define new value
AT+C1_LINK_P?\r\n
Query current value
Return value
[C1_LINK_P] Value is: <time>\r\n
To improve security of communication, the module supports TCP authentication. When TCP authentication is enable,
the module requires password input from the Ethernet. If the password is wrong, it requires re-entering password
until it receives a correct password. Device password could be configured or query by “AT+PASS”.
6.4.4.13
TCP link establishment condition (
AT+LINK_T
)
Command format
Parameters
Usage
AT+C1_LINK_T=<link_t>\r\n
<link_t>
0: Reconnect after power up the module (default)
1: Reconnect after received data from serial interface
Define new value
AT+C1_LINK_T?\r\n
Query current
value
Return value
[C1_LINK_T] Value is: <link_t>\r\n
In TCP client mode, the connection is established by the module. If define it as 1, the module will establish the
connection establishment by receiving the first package of data from serial interface. This data will be discard by the
module. The actual data will be started from the second package that received from the serial interface.
6.4.4.14
TCP link establishment message (
AT+C1_LINK_M
)
Command format
Parameters
Usage
AT+C1_LINK_M=<link_m>\r\n
<link_m>
0: No message (default)
1: Send Device ID
2: Send MAC address
3: Send IP address
Define new value
AT+C1_LINK_M?\r\n
Query current value
Return value
[C1_LINK_M] Value is: <link_m>\r\n
Only operate on TCP communication, it will send out device message after the connection established.
6.4.4.15
bytes sent by serial (
AT+C1_SEND_NUM
)
Command format
Parameters
Usage
AT+C1_SEND_NUM?\r\n
Nil
Query the bytes sent by serial interface
Return value
<C1_SEND_NUM> Value is: <num>\r\nOK\r\n
Maximum value: 4,294,967,295 bytes
6.4.4.16
Serial interface receive counter (
AT+C1_RCV_NUM
)
Command format
Parameters
Usage
AT+C1_RCV_NUM?\r\n
Nil
Query the bytes received by serial interface
Return value
<C1_RCV_NUM> Value is: <num>\r\nOK\r\n
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