User`s guide

Introduction
This chapter provides more advanced information on your printer
and your host’s communication with the printer. The simplest way
to change your printer’s method of communicating is to use the PS
Executive Series Utilities software included in your purchase. The
following tasks may be accomplished, however, without the print
utilities. This chapter explains how to perform these tasks. Topics
discussed in this chapter are
■ Flow control protocols
■ Sample files to test communication
■ Modes of operation
This chapter is primarily designed for more advanced users in the
IBM PC and DOS environments.
About Serial Communication
Three parameters determine the details of serial communication:
channel, baud rate, and options.
Channel
The channel is the 25-pin serial connector on the printer. PostScript
identifies that channel with the integer, 25.
Chapter 8
Printer/Host Communication 8-1