Interface

Specifications

 

 

 

 

 

 

 

 

 

 

Signal

Return

 

Signal

 

Direction

Description

Pin

 

Pin

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

35

 

-

-

 

OUT

Pulled up to +5 V through 3.3 K

 

 

 

 

 

 

 

resistance.

 

 

 

 

 

 

 

 

36

 

-

 

 

IN

 

 

 

SLCT IN

 

Internal fixing can be carried out with

 

 

 

 

 

 

 

Jumper J6. The level of this signal is

 

 

 

 

 

 

 

factory-set to LOW.

 

 

 

 

 

 

 

 

Note:

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.

All interface conditions are based on 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 level of the BUSY signal is LOW.)

7-10Technical Specifications