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

	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