when communicating via an asynchronous serial data port (refer to figure 12 for a db25 serial interface connector and figure 13 for a db9 serial interface connector), the baud rate, number of data and stop bits, parity, and handshaking are user selectable. parity only applies to data transmitted by the printer since the parity of received data is ignored.

when communicating via the parallel port (refer to figure 14), the previously mentioned parameters are not considered. refer to page 54 to configure the communication parameters for the printer. the values selected must be the same as those used by the host equipment connected to the printer.
for serial and parallel pinout and technical information, refer to “appendix a: db25 connectors” on page 99 or “appendix b: db9 connectors” on page 105.