LPWA Module Series
BG96 TCP/IP Application Note
BG96_TCP/IP_Application_Note 33 / 52
Parameter
2.3. Description of URCs
The URC of TCP/IP AT commands will be reported to the host in the format of beginning with +QIURC:. It
contains the reports about incoming data, connection closed and incoming connection and so on. Actually,
there is <CR><LF> both before and after the URC, but <CR><LF> is not presented intentionally.
2.3.1. +QIURC: "closed" Indicate Connection Closed
When TCP socket service is closed by a remote peer or due to network error, the URC will be outputted,
and the status of socket service will be "Closing" (<socket_state>=4). AT+QICLOSE=<connectID> can
be used to change <socket_state> to "Initial".
Parameter
2.3.2. +QIURC: "recv" Indicate Incoming Data
In buffer access mode or direct push mode, after receiving data, the module will report URC to the host.
In buffer access mode, after receiving data, the module will report URC +QIURC: "recv",<connectID> to
notify the host. Then the host can retrieve data via AT+QIRD. Please note that if the buffer is not empty,
and the module receives data again, it will not report a new URC until all the received data has been
retrieved via AT+QIRD from buffer.
<err> Integer type. Error code of operation. Please refer to Chapter 4.
<errcode_description> A string parameter indicates the details of error information. Please refer to
Chapter 4 for details.
+QIURC: "closed" Indicate Connection Closed
+QIURC: "closed",<connectID>
Socket service connection is closed.
<connectID> Integer type. Socket service index. Range: 0–11.
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