Compuprint 10200 Programmer Manual Manual de usuario descargar pdf (Pagina 213)

Interfaces

209

Description of the signals in monodirectional link:

Signal Name Pin N° Source Description

STROBE 1 HOST Clock signal which controls data transmission with its falling edge.

ACK 10 PRINTER Negative pulsed signal indicating that the printer has received data and

is ready to accept the next set of data. Also sent when the printer is

switched from off-line to on-line and at the end of the initialization time.

The BUSY line is always active.

DATA BIT 1

DATA BIT 2

DATA BIT 3

DATA BIT 4

DATA BIT 5

DATA BIT 6

DATA BIT 7

DATA BIT 8

PRINTER /

HOST

Data 8 is the most significant bit. These are the data lines used by host

or printer to transfer control code or ASCII codes.

BUSY 11 PRINTER When high, this signal indicates that the printer cannot accept data

or control codes. This signal goes high during data processing, in

test and program modes, during initialization, when the buffer is full,

and when a paper jam, paper end or paper size error occurs, in

case of a power-on reset, the reception of a STROBE signal, while

the register was not yet read, or when the INIT line is still active.

PE 12 PRINTER When high, this signal indicates that the automatic input bin is out of

paper and paper cannot be loaded from an other bin.

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Compuprint 10200 Programmer Manual Manual de usuario Pagina 213