FARGO electronic Maestro 900 - Manual (Page 9)

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- If the TCP connection is broken the modem will try to reconnect automatically. During re-
connection period serial port will go back to command mode, and DSR/DCD signal back
to low.
- The setting will be saved, and after power off, the AUTOTCP will be restarted with the 20
seconds delay after power up.
- To stop auto TCP connection, you need to enter the command AT+AUTOTCP=0 within
20 seconds after power up, or during reconnection (serial port back to command mode)
3.2.2 AT+IPTCP
Description:
This command specifies the TCP socket parameters and mode that to be used by
AT+AUTOTCP command.
Syntax:
Command Syntax
AT+IPTCP=<port>,<mode>,<server>,<TCPTxDelay>
Response syntax:
+ IPTCP: <port>,<mode>,<server>,<TCPTxDelay>
Command Possible responses:
AT+ IPTCP? +IPTCP: 0,"S","",100
OK
Note : show current settings
AT+ IPTCP =23 OK
Note: set the TCP port to 23
AT+ IPTCP =23,”C”,202.144.111.222”,100 OK
Note: to set the modem to connect TCP socket Client
(caller) mode
to target :address 202.144.111.222 and port 23
AT+ IPTCP =23,”S”,255.255.255.255”,100 OK
to set the modem to wait for TCP socket connection
request (Server (listening) mode)
any calling IP address allowed, port 23
AT+ IPTCP =? +IPTCP: (0-65535),("C","S"),(120),(0-32760)
OK
Note : possible argument
Defined Values:
<port>
The port number to be used for the TCP socket connection. Default value is 0. Valid range is 0
to 65535.