
Section 5: Interface Specifications
XL400/410e Operator’s Manual
Page 5-3
5.3 THE RECEIVE BUFFER (CONT’D)
The receiving buffer will not be able to receive more data again until a “Buffer Available” condition
occurs. This takes place when the receiving buffer has emptied so that only 56K bytes of data
are being held (8K bytes 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)
Electrical Specifications
Connector DB-25S
(Female)
Cable
DB-25P (Male), 50 ft maximum length. For cable
configuration, refer to Cable Requirements appropriate
to the RS232C protocol chosen.
Signal Levels
High = +5V to +12V
Low = -5V to -12V
Pin 1
Pin 13
Pin 25
Pin 14
Содержание XL 410e
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