INTERFACE INFORMATION

D

 

This printer can communicate with a computer

 

through either a Centronics parallel interface or

 

an RS-232C serial interface. You can specify the interface selection

 

mode so that the printer uses either interface or it can automatically

 

select the interface from which it first receives data.

 

 

This appendix provides information you may need for wiring your

 

own interface cables or for programming computer-to-printer commu-

 

nications. Most users do not need the information in this appendix. To

 

simply connect your printer to your computer, follow the instructions

 

in Chapter 2.

 

PARALLEL INTERFACE

This parallel interface can operate in the following two modes:

 

• Unidirectional (forward channel) mode or conventional mode:

This printer supports a conventional Centronics interface.

• Bidirectional (forward/reverse channel) mode or nibble mode: This printer supports a bidirectional communication per Nibble mode of the IEEE 1284 Standard.

The cable connector at the printer side should be a shielded,

Amphenol DDK 57FE-30360 or equivalent.

The connector pin assignments are given in the following tables by modes. In the tables:

• “Input” denotes a signal from the computer to the printer.

• “Output” denotes a signal from the printer to the computer.

• The return lines specified in the second column represent twisted pairs, with one side connected to signal ground.

• The standard signal levels are 0.0 to +0.4 V (low), and +2.4 to +5.0 V (high).

Interface

User's Manual

D-1

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Image 213
Fujitsu DL3800 manual Parallel Interface, Unidirectional forward channel mode or conventional mode