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OD 07.01.02/v.1

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EP_2000_PM_EN_V.1.60_Nov.2009.doc

Serial Interface

Turn off the printer before attaching the cable. After connecting the connectors

screw the two screws.

Baud rate

1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200 bps

Serial port parameters

1 start bit, 8 data bits, 1 stop bit, no parity

Signal characteristics

RS232C

Mark – logical 1 (-3V до –12V)

Space – logical 0 (+3V до +12V)

Input-output Signals

RD Serial input data signal

ТD Serial output data signal

DSR

Dataflow control signal – INPUT

DTR

Dataflow control signal – OUTPUT

GND Ground

Signal Description

Start bit One “Space” level bit. Indicates the beginning of data byte.

Data bits Eight consequent bits. First is the least significant bit.

Stop bit One “Mark” level bit. Indicates the end of the byte.

Dataflow Control

If a hardware protocol is selected the computer could send data only at “Space” level on the

DTR line. Data reception is disabled when the buffer is close to its upper limit.

Reception is re-enabled when the number of bytes in the buffer is below some limit.

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Datecs EP-2000 Manual de usuario Pagina 6