Black-box PS035A Manuel d'utilisateur télécharger pdf (Page 8)

PQ-6 PLUS (RO)

The Centronics parallel interface is a 25-pin, parallel byte interface. It has eight lines that carry their

respective binary bits in parallel. The transmission of these data bits is controlled by the computer-supplied

STROBE pulse. Handshaking (flow control) is achieved by asserting or deasserting either the ACKNLG or

BUSY signal from the printer.

Figure 2-1. Typical Application.

S/3X, AS/400 or remote controller

PQ-6 PLUS (RO)

Printer

ASCII data serial

or parallel

Twinaxial

Serial EBCDIC

data and

commands

(1 MHz bit rate)

1 2 3 4 5 6 7 8 9 10 11 12 13 ... 29 30

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Black-box PS035A Manuel d'utilisateur Page 8