Serial Interface

Connector pin assignments and a description of respective interface signals are shown in Table F-3.

Table F-3. Pins and signals

Pin No.

Signal name

Dir

Functional Description

1

Not used

—

Reserved.

2

REV (Reverse

OUT

Indicates printer is ready to receive

 

channel)

 

data or not. MARK level indicates

 

 

 

printer is not ready to receive data.

3

RXD

I N

Receives data (RS-232C level)

4

Not used

—

Reserved.

5

Signal GND

—

Signal

(Logic) ground level.

6

Chassis GND

—

Printer

chassis ground.

1.DIR refers to the direction of signal flow as viewed from the printer.

Word Length

 

Start bit:

1 bit

Data bits:

8 bits

Stop bit:

1 bit or more

Parity

 

Odd, Even, or Non-Parity (see Table A-4)

F-5