User's Manual

Interface Specifications
Printing Enabled/Disabled Signals and Control Conditions
The table below shows the relationship between printing being
enabled or disabled, the on line/off line status, and the receipt of the
data on/off control characters, DC1 or DC3.
ON LINE
(Indicator
on)
on line
F
on line
on line
off line
SLCTIN DC1/DC3 ERROR BUSY
ACKNLG
(Data
on/off
control)
Low (J10 DC1/DC3 High High/Low Pulsed
interface) (no effect)
ea. char.
High DC1
High
High/Low Pulsed
Recv’d ea. char.
High DC3
High
High/Low Pulsed
Recv’d ea. char.
High/Low DC1/DC3 Low
High
Not
(no effect) (no effect) generated
Printing
(Disabled/
enabled)
Enabled
(normal
cond.)
Enabled
Disabled*
Disabled
* While printing is disabled, character data is being received and
acknowledged so that the printer can look for another DC1
character, which would allow it to resume printing.
8-12
Technical Specifications