Printronix P8000 Series Cartridge Ribbon Printer - Manual (Page 102)

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Chapter 4 HOST INTERFACE Menu
The response characters are described in Table 7.
• SERIES1 2 CHAR . This protocol behaves exactly the same as the
Series1 Char except there is a two-character response to the host. The
response characters are described in Table 8.
• ENQ/ACK . Enquiry/Acknowledge. The host controls the flow of data by
sending an ENQ (Enquiry, decimal 5, Control-E) approximately every 80
characters. When the printer is ready for more data, it replies with an ACK
(Acknowledge, decimal 6, Control-F).
• DTR . The printer controls the data flow by sending this hardware signal to
the host. If there is enough room in the printer buffer, the printer will send
a high signal; if the buffer is full, the printer will send a low signal. DTR
tells the host if it is safe to send more data. (If the host sends data during
an unsafe condition, data will be lost.)
Baud Rate
Sets the baud rate of the serial interface in the printer. Baud rate is the speed
at which serial data is transferred between the host computer and the printer.
The choices for the RS-232 interface are 600, 1200, 2400, 4800, 9600,
19200, 38400, 57600, and 115200 Baud. The default is 9600 Baud.
NOTE: If you select a baud rate that is greater than 19200, you may also
want to increase the Buffer Size in K parameter to improve
performance.
Table 7. Series1 1 Char Response Characters
Printer State Response
Online and Buffer Empty CR
Online and Buffer Full 3
Offline and Buffer Empty 0
Offline and Buffer Full 2
Table 8. Series1 2 Char Response Characters
Printer State Response
Online and Buffer Empty 1 CR
Online and Buffer Full 3 CR
Offline and Buffer Empty 0 CR
Offline and Buffer Full 2 CR