USR-WIFI232-A/B/C User Manual
http://www.usriot.com
Jinan USR IOT Technology Limited
Page 65 of 93
TCP timeout: module began to count when TCP channel did not receive any data, receive data purge
count.If the timing time exceed TCPTO, disconnect the TCP channel.If module work in TCP Client , it
will take the initiative to rewiring the TCP Server, If module work in the TCP Server, the TCP Client
need active reconnection.
5.2.2.2.26
5.2.2.2.26
5.2.2.2.26
5.2.2.2.26
AT+
AT+
AT+
AT+ MAXSK
MAXSK
MAXSK
MAXSK
�
Function: Set/Query maxima TCP connection;
�
Format:
�
Query Operation
AT+
AT+
AT+
AT+ MAXSK<CR>
MAXSK<CR>
MAXSK<CR>
MAXSK<CR>
+ok=<num><CR><
+ok=<num><CR><
+ok=<num><CR><
+ok=<num><CR>< LF
LF
LF
LF ><CR><
><CR><
><CR><
><CR>< LF
LF
LF
LF >
>
>
>
�
Set Operation
AT+
AT+
AT+
AT+ MAXSK
MAXSK
MAXSK
MAXSK =<num
=<num
=<num
=<num ><CR>
><CR>
><CR>
><CR>
+ok<CR><
+ok<CR><
+ok<CR><
+ok<CR>< LF
LF
LF
LF ><CR><
><CR><
><CR><
><CR>< LF
LF
LF
LF >
>
>
>
�
Parameters:
�
num: 1~32, default 32. maxima TCP connection;
When configure as TCP/Server, USR-WIFI232-A/B/C support maxima 32 TCP connections. If not
require so much connection, user can resetting this parameters.
5.2.2.2.27
5.2.2.2.27
5.2.2.2.27
5.2.2.2.27
AT+TCPB
AT+TCPB
AT+TCPB
AT+TCPB
�
Function: Open/Close TCPB function;
�
Format:
�
Query Operation
AT+TCPB<CR>
AT+TCPB<CR>
AT+TCPB<CR>
AT+TCPB<CR>
+ok=<sta><CR><
+ok=<sta><CR><
+ok=<sta><CR><
+ok=<sta><CR>< LF
LF
LF
LF ><CR><
><CR><
><CR><
><CR>< LF
LF
LF
LF >
>
>
>
�
Set Operation
AT+
AT+
AT+
AT+ TCPB=<on/off><CR>
TCPB=<on/off><CR>
TCPB=<on/off><CR>
TCPB=<on/off><CR>
+ok<CR><
+ok<CR><
+ok<CR><
+ok<CR>< LF
LF
LF
LF ><CR><
><CR><
><CR><
><CR>< LF
LF
LF
LF >
>
>
>
�
Parameters:
�
sta: TCPB enable status
�
on, TCPB enable
�
off, TCPB disable
After USR-WIFI232-A/B/C module boots up again, the setting will be effective.
5.2.2.2.28
5.2.2.2.28
5.2.2.2.28
5.2.2.2.28
AT+TCPPTB
AT+TCPPTB
AT+TCPPTB
AT+TCPPTB
�
Function: Set/Query TCPB port number;
�
Format:
�
Query Operation
AT+TCPPTB<CR>
AT+TCPPTB<CR>
AT+TCPPTB<CR>
AT+TCPPTB<CR>
+ok=<port><CR><
+ok=<port><CR><
+ok=<port><CR><
+ok=<port><CR>< LF
LF
LF
LF ><CR><
><CR><
><CR><
><CR>< LF
LF
LF
LF >
>
>
>
�
Set Operation
AT+
AT+
AT+
AT+ TCPB=<port><CR>
TCPB=<port><CR>
TCPB=<port><CR>
TCPB=<port><CR>
+ok<CR><
+ok<CR><
+ok<CR><
+ok<CR>< LF
LF
LF
LF ><CR><
><CR><
><CR><
><CR>< LF
LF
LF
LF >
>
>
>
�
Parameters:
�
port: decimal ,<65535