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Programming Manual 5. Interface Specifications
SATO RISC Printers 171
from being full). At this time, DTR will go “high” or an X-On is sent to tell
the host that it can again receive data.
All printer error conditions (i.e., label out, ribbon out) will cause the printer
to go busy (DTR “low” or X-Off) until the problem is corrected and the
printer is placed on-line. The printer will also be busy if taken off-line from
the front panel.
5.4 RS232C Serial Interface
General Specifications
Asynchronous ASCII
Half-duplex communication.
Ready/Busy Hardware Flow Control
Pin 20, DTR Control
Pin 4, RTS Error Condition
X-On/X-Off Software Flow Control.
Bi-Directional communication (ENQ/Response)
Data Transmission Rate
2400, 4800, 9600 and 19200 bps
Character Format
1 Start Bit (fixed)
7 or 8 data bits (selectable)
Odd, Even or No Parity (selectable)
1 or 2 Stop bits (selectable)
DTR Low or
X-Off
Buffer Available
DTR High or
X-On
0
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