OKI 441 Manual De Usuario

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FG

—

Frame ground

TXD

OUT

Transmission data

RXD

IN

Receive data

4

RTS

OUT

Always space

5

N.C.

Not connected

6

DSR

IN

Dip switch - = OFF
() STAR Mode
 

Status of this signal is not checked.

() ESC/POS Mode

• In DTR/DSR communication mode
  Memory Switch 4-5 = “0”:

 

signal line indicating whether host is 
enabled or disabled to receive data is 
checked.

Space: 

Host enabled to receive

Mark: 

Host disabled to receive

Memory switch 4-5 = :
 

Status of this signal is not checked.

• In X-ON/X-OFF communication mode, status of 

this signal is not checked.

Dip switch - = ON
 

This is an externally reset signal.

 

A mark above  ms pulse width engages reset.

SG

Signal ground

 -

N.C.

Not connected

0

DTR

OUT

Indicates whether data receive from host is enabled or 
disabled.
DTR/DSR Communication Mode
Space when receive is enabled.

Printer status

Memory switch 6-

0

. During  the  period  from  when 

the power is turned on (includ-
ing resetting using the interface) 
to  when  the  printer  is  ready  to 
receive data.

BUSY

BUSY

. During self printing and dot align-

ment adjustment.

BUSY

BUSY

. When the printer stops printing 

due to a paper end or an optional 
paper near end.

BUSY

—

4. When an error has occurred.

BUSY

—

5. When the receive buffer becomes 

full.

BUSY

BUSY