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Technical Notes
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User Manual
A-3
Printer ports
This section includes information on the parallel and Ethernet ports.
Information on the serial port is available on the CD-ROM, on the HAL
and EuroHAL automated fax systems, and through the Internet. Refer to
ÒAt a glance: electronic addresses and telephone numbersÓ on page 6-1.
Parallel port
The printer has a standard unidirectional, byte-wide parallel, synchronous
port. When you use the parallel port, be sure to type this command at the
PC (if
LPT1 is not available, use LPT2):
MODE LPT1:,,P
The table shows the parallel portÕs connected pins. Other pins are not
connected. Signal names ending with a dash (-) are asserted low.
Parallel port signal descriptions
Signal name Pin # Return
pin
Signal
source
Description
DSTRB- 1 19 Host Pulsed low for .5
microseconds;
clocks data into printer
DATA1 2 20 Host Positive true data input
DATA2 3 21 Host Positive true data input
DATA3 4 22 Host Positive true data input
DATA4 5 23 Host Positive true data input
DATA5 6 24 Host Positive true data input
DATA6 7 25 Host Positive true data input
DATA7 8 26 Host Positive true data input
DATA8 9 27 Host Positive true data input
ACK- 10 28 Printer Data acknowledge pulsed low
for 3-4 microseconds; ends
bus transaction