Interface Specifications

 

 

 

 

 

Signal

Return

Signal

Direction

Description

Pin

Pin

 

 

 

 

 

 

 

 

35

-

+5v

-

Pulled up to 5V through 3.3K ohm

 

 

 

 

resistance.

 

 

 

 

 

36

-

SLCTIN

IN

The DC1/DC3 control codes are valid

 

 

 

 

only when this signal is HIGH (SLCTIN

 

 

 

 

set to OFF). This setting can be changed

 

 

 

 

with SelecType. Sampling is carried out

 

 

 

 

only when the power is on.

 

 

 

 

 

Notes:

•All interface conditions are based on TTL level. Both the rise and fall 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 the receipt of the ACKNLG signal or when the level of the BUSY signal is LOW.

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

•“Return” denotes the twisted-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. These cables should be shielded and connected to the chassis of the host computer and the printer.

Technical Specifications

8-11