At+Socklkmn; At+Maxskn; At+Tcpsen - USR IOT Cortex-M7 Series At Command Manual

UDPS UDP Server

UDPC UDP Client

HTPC Httpd Client

IP: When the module is set to Client, the IP address is the server IP address

Port: 0~65535,0 means random

E.g.AT+SOCKA1=TCPC,192.168.0.201,8234

2.5.20. AT+SOCKLKMN

Function

Query socket M connection status of PortN
Query

AT+ SOCKLKMN<CR>
<CR><LF>+OK=<sta><CR><LF>
Parameter

Sta

IDLE：Initialization status

LISTEN：When the module works as a TCP Server, it is listening for connection access

CONNECTING：The module is building a connection to the TCP Server

CONNECTED：The TCP connection to TCP server of the module has been established

CONNECTED（n）：Number of TCP clients connected to the module

ERROR：The module is abnormally disconnected

E.g.AT+SOCKLKA1

2.5.21. AT+MAXSKN

Function

Query/set maximum sockets no. supported in TCP server mode of PortN
Format

Query

AT+MAXSKN<CR>
<CR><LF>+OK=<num><CR><LF>
Set

AT+MAXSKN<CR>
<CR><LF>+OK =<num><CR><LF>
Parameter

num: 1~16. maximum sockets supported in TCP server,default 8

E.g.AT+MAXSK1=8

2.5.22. AT+TCPSEN

Function

Query/set whether to receive new connection after exceeding maximum sockets NO.
Query

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AT command set
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