At Command Configuration Examples; Set Into Tcp Server Mode Example - Wiznet W7500S2E-R1 User Manual

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
AT+C1_LINK_M=<link_m>\r\n
AT+C1_LINK_M?\r\n
Return value
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
AT+C1_SEND_NUM?\r\n
Return value
Maximum value: 4,294,967,295 bytes
6.4.4.16 Serial interface receive counter (AT+C1_RCV_NUM)
Command format
AT+C1_RCV_NUM?\r\n
Return value
Maximum value: 4,294,967,295 bytes.

6.5 AT command configuration examples

6.5.1 Set into TCP server mode example

W7500S2E-R1 user manual
Parameters
<link_m>
0: No message (default)
1: Send Device ID
2: Send MAC address
3: Send IP address
[C1_LINK_M] Value is: <link_m>\r\n
Parameters
Nil
<C1_SEND_NUM> Value is: <num>\r\nOK\r\n
Parameters
Nil
<C1_RCV_NUM> Value is: <num>\r\nOK\r\n
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W7500S2E-R1 serial to Ethernet module
Query the bytes sent by serial interface
Query the bytes received by serial interface
Usage
Define new value
Query current value
Usage
Usage