Table F-2. Printing enabled/disabled signals and control conditions

On Line

 

 

 

 

DC1/DC3

ERROR

 

 

 

 

Printing

 

 

 

 

 

 

 

 

SLCT IN

 

BUSY

ACKNLG

(Indicator

on)

(Data on/off

contr.)

(Disabled/enabled)

 

 

 

 

 

 

 

 

ON LINE

 

LOW

DC1 /DC3

 

HIGH

HIGH/LOW

PULSED EA. CHAR.

ENABLED

 

(SW. 2-1/interface)

(no effect)

 

(normal cond.)

ON LINE

 

HIGH

DC1

RECV’D

 

HIGH

HIGH/LOW

PULSED EA. CHAR

ENABLED

ON LINE

 

HIGH

DC3

RECV’D

 

HIGH

HIGH/LOW

PULSED EA. CHAR.

*DISABLED

OFF LINE

 

HIGH/LOW

DC1/DC3

 

LOW

HIGH

NOT GENERATED

DISABLED

 

(no effect)

(no

effect)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

*Even though printing is disabled, data characters are received and acknowledged, since the printer is looking for another DC1 character,

which would allow it to resume printing.