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Socket Communication
In the socket server of TCP/IP, Port1024 is used for print data reception, Port1025 is used for 2-port
connection of printer status return, and Port9100 is used for 1-port connection for both receiving print
data and printer status return.
When Port9100 is used, only status return data and printer operation setting request data are
returned to host.
It is not possible to use 2 port connection and 1 port connection at the same time.
It is not possible to have few sessions connected at once to each Socket.
Besides Socket, it is possible to use LPR and FTP for sending print data. It is not allowed to
connect to print data port (Port 1 or Port 3) while LRP and/or FTP is connected due to Socket
communication.
1. Print by 2 port connection/Socket (Status4)
Host
2. Print by 1 port connection/Socket (Status4)
Host
3. Print by 1 port connection/Socket (Return status3, 5)
Host
4. Print with LPR and FTP
Host
Print data Port 1024
Return data Port1025
Print data, return data
Port9100
Print data, return data
Port1024 or Port9100
Print Data LPR, FTP
Return data
Port1025
500
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