SATO FX3-LX Operator's Manual page 323

Two-port connection is available when the communication protocol is Status4.
One-port connection
One port is used for both receiving print data and returning the printer status.
When the communication protocol is Status4, Port3 is used.
When the communication protocol is Status3 or Status5, Port1 or Port3 is used.
The setting items are as follows:
[Port1]
Set the port number of Port1.
For the two-port connection of Status4, this port is used for receiving print data. For the one-port
connection of Status3/Status5, this port is used for both receiving print data and returning the printer
status.
The setting range is from 1 to 65535.
• Each port (1, 2 and 3) must be set to different values.
[Port2]
Set the port number of Port2.
For the two-port connection of Status4, this port is used for returning the printer status.
The setting range is from 1 to 65535.
• Each port (1, 2 and 3) must be set to different values.
• This setting is disabled when AEP mode is enabled.
323