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Centronics-Compatible Parallel Data Port

A standard 36-pin Centronics-compatible parallel connector is available at the rear of

the print engine 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 print engine status information over this port.

However, if the print engine receives a “Print engine Status Request” command over

the parallel interface, it will send back this information over the RS-232 port.

Parallel Port Interconnections — Table 9 shows the pin configuration and function of

a standard computer-to-print engine Centronics-compatible parallel cable:

Table 9: Centronics-Compatible Pinouts

Number

Description

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

at the eight data inputs into the print engine.

2-9 DATA BITS 0-7 — Parallel data inputs to the print engine. 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 print engine is an active LOW pulse

indicating that the print engine has received the previous character and is

ready to accept another data character.

11 BUSY — This print engine output is active HIGH whenever it cannot accept

data.

12 ERROR — This output signal is active HIGH whenever the print engine is out

of paper or ribbon.

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

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 print engine.

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 print engine.

32 FAULT — This output from the print engine is active LOW whenever any of

the following error conditions are present: Printhead Open, Printhead Over

Temperature, Paper Out, Ribbon Out.

35 +5 V resistive

36 SEL IN — Connected but not used by the print engine.

1 2 ... 74 75 76 77 78 79 80 81 82 83 84 ... 99 100

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Zebra 170PAX2 Series Guía de usuario Pagina 79