User`s manual

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 SLCTIN DClIDC3 ERROR BUSY
ACKNLG Printing
(Indicator
(Data
(Disabled/
on)
on/off
enabled)
control)
on line Low (J9
DCl/DCS High
High/Low Pulsed
Enabled
interface) (no effect)
ea. char.
(normal
cond.)
on line High
DC1
Recv’d
High
High/Low Pulsed Enabled
ea. char.
TIHish 1 ;tIv,d
( High 1 High/Low ( l”(setar. ( Disabled*
1 High
1 ;iierated 1 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.
Serial Interface
The LQ built-in serial interface is an IX!%232C asynchronous interface
with the following characteristics:
Data format
1 start bit
Data word length: 8 bit
Odd, even, or no parity
1 stop bit
Bad rate
300,1200,9600,19200 bits per second
Technical Specifications 8-13