TallyGenicom 2440 User Guide
B-1
B
Interfaces
Your printer offers by default the possibility of operating either via a parallel interface or
an USB interface. In addition, a serial interface (RS232C) or an Ethernet interface are
available as options. Interfaces may vary from unit to unit depending on which configu-
ration is purchased.
an USB interface. In addition, a serial interface (RS232C) or an Ethernet interface are
available as options. Interfaces may vary from unit to unit depending on which configu-
ration is purchased.
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 in-
formation in this appendix. To simply connect your printer to your computer, follow the
instructions in Chapter 2, “Operating the printer”, section “Connecting the interface cable”.
or for programming computer-to-printer communications. Most users do not need the in-
formation in this appendix. To simply connect your printer to your computer, follow the
instructions in Chapter 2, “Operating the printer”, section “Connecting the interface cable”.
Parallel interface
This parallel interface can operate in the following two modes:
•
Unidirectional (forward channel) mode or compatible mode: This printer sup-
ports a conventional Centronics interface.
ports a conventional Centronics interface.
•
Bidirectional (forward/reverse channel) mode or nibble mode: This printer sup-
ports a bidirectional communication per Nibble mode of the IEEE 1284 Standard.
ports a bidirectional communication per Nibble mode of the IEEE 1284 Standard.
The cable connector at the printer side should be a shielded, Amphenol DDK57FE-
30360 or equivalent.
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 standard signal levels are 0.0 to +0.4 V (low), and +2.4 to +5.0 V (high).