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D
APPENDIX D INTERFACE INFORMATION
INTERFACE INFORMATION
This parallel interface can operate in the following two modes:
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.
This printer can communicate with a computer
through a Centronics parallel interface, a RS-232C
serial interface, a USB interface, or a LAN interface. You can specify
the interface selection mode so that the printer uses which 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 communications.
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
• 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.
• “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).
User's Manual D-1