Signal

Return

Signal

 

Direction

Description

Pin

Pin

 

 

 

 

 

 

 

 

 

 

32

-

 

 

OUT

This level becomes LOW when

ERROR

 

 

 

 

 

 

the printer is:

 

 

 

 

 

1) In a paper-out state

 

 

 

 

 

2) When the PAUSE button is

 

 

 

 

 

pressed

 

 

 

 

 

3) In an error state

 

 

 

 

 

 

33

-

GND

-

Same as for pins 19-30

 

 

 

 

 

 

34

-

NC

 

 

Not used

 

 

 

 

 

 

35

-

 

 

OUT

Pulled up to 5 V through 3.3

 

 

 

 

 

resistance

 

 

 

 

 

 

36

-

 

 

IN

The DC1 /DC3 code is valid only

SLCT IN

 

 

 

 

 

 

when this signal is HIGH This

 

 

 

 

 

signal is always LOW.

 

 

 

 

 

 

Note:

The column heading “Direction” refers to the direction of signal flow as viewed from the printer.

“Return” denotes the twisfed-pair return, to be connected at signal ground level. For the interface wiring, be sure to use a twisted-pair cable for each signal and to complete the connection on the return side.

All interface conditions are based on the TTL level. Both the rise and fall times of each signal must be less than 0.2 microseconds.

Data transfer must be carried out by observing the ACKNLG or BUSY signal. (Data transfer to this printer can be carried out only after receipt of the ACKNLG signal or when the BUSY signal is LOW.)

Technical Specifications

7-13