Interface Information

Pin

Direction

Signal

Description

31

To printer

Init L

Set to high for Reverse Channel operation

 

 

 

 

32

From printer

DataAvail L

Reverse channel: Data 0 and 4

 

 

 

 

33

 

 

Not used

 

 

 

 

34

 

 

Not used

 

 

 

 

35

 

 

Not used

 

 

 

 

36

To printer

SelectIn L

Set to high for Reverse Channel

 

 

 

 

Serial Interface

Use the cable that comes with the printer or the Digital BC16E cable or equivalent. If you prepare a cable separately, the cable connector at the printer side should be a male Modified Modular Jack (MMJ) or the equivalent that conforms to EIA standards.

The following table shows the pin assignments. In the table:

“Input” denotes a signal from the computer to the printer.

“Output” denotes a signal from the printer to the computer.

The signal level for mark state (logical 1) is -5 V to -6 V; for space state (logical 0), it is +5 V to +6 V.

Pin

Signal

Direction

Description

No.

Name

 

 

 

 

 

 

1

Ready Out

Output

Data Terminal Ready

 

 

 

 

2

Transmit Data +

Output

This pin carries information from the printer to

 

 

 

the computer.

 

 

 

 

3

Transmit Data -

Output

Common signal level. This pin carries

 

 

 

information from the printer to the computer.

 

 

 

 

4

Receive Data -

Input

Common signal level at the computer side.

 

 

 

This pin carries information from the computer

 

 

 

to the printer.

 

 

 

 

5

Receive Data +

Input

This pin carries information from the computer

 

 

 

to the printer.

 

 

 

 

6

Ready In

Input

Optional (available as Data Set Ready)

 

 

 

 

D-4

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Image 153
Genicom LA36 manual Serial Interface