User Guide User guide

Printing
4-6
Changing the Protocol
When you first turn the printer on, the active protocol depends on what port will be
used for printing.
 For Macro 1: If you use the serial port, the active protocol will be the DEC pro-
tocol.
If you use the parallel port, the active protocol will be the Epson
protocol.
If you use the USB port, the active protocol will be the Epson pro-
tocol.
 For Macro 2: If you use the serial port, the active protocol will be the DEC pro-
tocol.
If you use the parallel port, the active protocol will be the IBM pro-
tocol.
If you use the USB port, the active protocol will be the IBM proto-
col.
This printer has three protocols and allows you to set the protocol mode in one of the
following three ways: the printer engages one of the three protocols, automatically
determines the active protocol, or assigns different protocols for parallel, serial or
USB interfaces.
To change the protocol: Repeatedly press the Protocol button. The DEC and PPX24
indicators turn on and off. The combination of lighted indicators shows the protocol
mode selected, according tothe next table.
Changing the protocol