Zebra Technologies 170PAX2TM manual Centronics-Compatible Parallel Data Port

Models: 170PAX2TM

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Appendix B

Centronics-Compatible Parallel Data Port

A standard 36-pin Centronics-compatible parallel connector is available at the rear of the printer for connection to the data source. The standard RS-232 port will not accept data when the parallel port is enabled. The parallel interface receives data from the data source but cannot send back printer status information over this port. However, if the printer receives a “Printer Status Request” command over the parallel interface, it will send back this information over the RS-232 port.

Parallel Port Interconnections — Table 3 shows the pin configuration and function of a standard computer-to-printer Centronics-compatible parallel cable:

PIN NO.

DESCRIPTION

 

 

1

STROBE — The high to low transition of this input signal will latch

 

the data at the eight data inputs into the printer.

 

 

2-9

DATA BITS 0-7 — Parallel data inputs to the printer. They have

 

TTL input characteristics where a HIGH (+5 V) level corresponds

 

with a logic 1 and a LOW (0 V) level is a logic 0.

 

 

10

ACKNOWLEDGE — This output of the printer is an active LOW

 

pulse indicating that the printer has received the previous character

 

and is ready to accept another data character.

 

 

11

BUSY — This printer output is active HIGH whenever it cannot

 

accept data.

 

 

12

ERROR — This output signal is active HIGH whenever the printer

 

is out of paper or ribbon.

 

 

13

SELECT — The function of this output signal is determined by a

 

Printer Configuration Option. In the default condition, SELECT is

 

active HIGH whenever the parallel port is powered up and enabled.

 

 

14

AUTOFEED — This input is unused by the printer.

 

 

15, 33, 34

Not used

 

 

16, 19-30

SIGNAL GROUNDS — The logic GROUNDS and returns for all

 

input and output signals.

 

 

17

Chassis ground (for cable shield connections)

 

 

18

+5 V fused output, 750 mA maximum

 

 

31

INITIALIZE (reset) — This input is unused by the printer.

 

 

32

FAULT — This output from the printer is active LOW whenever any

 

of the following error conditions are present: Printhead Open,

 

Printhead Over Temperature, Paper Out, Ribbon Out, Rewind Full

 

(if Rewind is used).

 

 

35

+5 V resistive

 

 

36

SEL IN — Connected but not used by the printer.

 

 

Table 3. Centronics-Compatible Connector Pinouts

170PAX2-Series User’s Guide

59

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Zebra Technologies 170PAX2TM manual Centronics-Compatible Parallel Data Port

170PAX2TM specifications

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