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Socket communication
In the socket server of TCP/IP, Port1 is used for print data reception, Port 2 is used for 2-port
connection of printer status return, and Port 3 is used for 1-port connection for both receiving print
data and printer status return.
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.
Please do not use 2 ports connections consist of Port 2 port and Port 3 port.
1. Print by 2 port connection/Socket (Status 4)
Host 
This product
Print data    Port1 
Return data   Port2 
 
2. Print by 1 port connection/Socket (Status 4)
Host 
This product
Print data, Return data   
Port3 
 
3. Print by 1 port connection/Socket (Return status 3, 5)
Host 
This product
Print data, Return data   
Port1 or Port3 
 
4. Print with LPR and FTP
Print data   LPR, FTP 
Return data 
Port2 
Host 
This product
Parent topic  LAN/Wireless LAN