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Appendix B:
Interfacing
Information
Appendix B: Interfacing Information 89
A. INTRODUCTION
The printer is equipped with a standard 8-bit Centronics-type parallel data
communications port. This is the means by which the printer receives data from
your computer. No options for serial data are available. This section describes the
pin assignments, protocol, and signal specifications for the parallel data input port.
B. CENTRONICS TYPE PARALLEL INTERFACE
The Centronics-type parallel interface is the most widely used printer interface due
to its simplicity, speed, and standardization throughout the PC industry. The
printers parallel interface connector is a standard 36-pin Amp type with two
metal-wire retaining clips and is ECP (Extended Capabilities Port) compatible. It
mates with a standard, bi-directional PC to printer parallel cable. For best results,
keep the interface cable to under 6 feet if possible.
B
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